diff --git a/Dockerfile b/Dockerfile
index feb89b0d..4cb33139 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,17 +4,17 @@ RUN apk update -f \
   && apk --no-cache add -f \
   openssl \
   curl \
-  netcat-openbsd
+  netcat-openbsd \
+  && rm -rf /var/cache/apk/*
 
 ENV LE_CONFIG_HOME /acme.sh
 
 ENV AUTO_UPGRADE 1
 
 #Install
-RUN mkdir -p /install_acme.sh/
 ADD ./ /install_acme.sh/
-RUN cd /install_acme.sh && ([ -f /install_acme.sh/acme.sh ] && /install_acme.sh/acme.sh --install || curl https://get.acme.sh | sh)
-RUN rm -rf /install_acme.sh/
+RUN cd /install_acme.sh && ([ -f /install_acme.sh/acme.sh ] && /install_acme.sh/acme.sh --install || curl https://get.acme.sh | sh) && rm -rf /install_acme.sh/
+
 
 RUN ln -s  /root/.acme.sh/acme.sh  /usr/local/bin/acme.sh
 
@@ -55,5 +55,7 @@ else \n \
  /root/.acme.sh/acme.sh --config-home /acme.sh \"\$@\"\n \
 fi" >/entry.sh && chmod +x /entry.sh
 
+VOLUME /acme.sh
+
 ENTRYPOINT ["/entry.sh"]
 CMD ["--help"]
diff --git a/README.md b/README.md
index e0c1e7d6..13188982 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,6 @@
 # An ACME Shell script: acme.sh [![Build Status](https://travis-ci.org/Neilpang/acme.sh.svg?branch=master)](https://travis-ci.org/Neilpang/acme.sh)
+
+[![Join the chat at https://gitter.im/acme-sh/Lobby](https://badges.gitter.im/acme-sh/Lobby.svg)](https://gitter.im/acme-sh/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 - An ACME protocol client written purely in Shell (Unix shell) language.
 - Full ACME protocol implementation.
 - Simple, powerful and very easy to use. You only need 3 minutes to learn it.
@@ -8,8 +10,9 @@
 - Just one script to issue, renew and install your certificates automatically.
 - DOES NOT require `root/sudoer` access.
 - Docker friendly
+- IPv6 support
 
-It's probably the `easiest&smallest&smartest` shell script to automatically issue & renew the free certificates from Let's Encrypt.
+It's probably the `easiest & smartest` shell script to automatically issue & renew the free certificates from Let's Encrypt.
 
 Wiki: https://github.com/Neilpang/acme.sh/wiki
 
@@ -31,6 +34,7 @@ Twitter: [@neilpangxa](https://twitter.com/neilpangxa)
 - [Centminmod](http://centminmod.com/letsencrypt-acmetool-https.html)
 - [splynx](https://forum.splynx.com/t/free-ssl-cert-for-splynx-lets-encrypt/297)
 - [archlinux](https://aur.archlinux.org/packages/acme.sh-git/)
+- [opnsense.org](https://github.com/opnsense/plugins/tree/master/security/acme-client/src/opnsense/scripts/OPNsense/AcmeClient)
 - [more...](https://github.com/Neilpang/acme.sh/wiki/Blogs-and-tutorials)
 
 # Tested OS
@@ -58,7 +62,7 @@ Twitter: [@neilpangxa](https://twitter.com/neilpangxa)
 |19|[![](https://cdn.rawgit.com/Neilpang/acmetest/master/status/gentoo-stage3-amd64.svg)](https://github.com/Neilpang/letest#here-are-the-latest-status)|Gentoo Linux
 |20|[![Build Status](https://travis-ci.org/Neilpang/acme.sh.svg?branch=master)](https://travis-ci.org/Neilpang/acme.sh)|Mac OSX
 
-For all build statuses, check our [daily build project](https://github.com/Neilpang/acmetest):
+For all build statuses, check our [weekly build project](https://github.com/Neilpang/acmetest):
 
 https://github.com/Neilpang/acmetest
 
@@ -135,13 +139,25 @@ root@v1:~# acme.sh -h
 acme.sh --issue -d example.com -w /home/wwwroot/example.com
 ```
 
+or:
+
+```bash
+acme.sh --issue -d example.com -w /home/username/public_html
+```
+
+or:
+
+```bash
+acme.sh --issue -d example.com -w /var/www/html
+```
+
 **Example 2:** Multiple domains in the same cert.
 
 ```bash
 acme.sh --issue -d example.com -d www.example.com -d cp.example.com -w /home/wwwroot/example.com
 ```
 
-The parameter `/home/wwwroot/example.com` is the web root folder. You **MUST** have `write access` to this folder.
+The parameter `/home/wwwroot/example.com` or `/home/username/public_html` or `/var/www/html` is the web root folder where you host your website files. You **MUST** have `write access` to this folder.
 
 Second argument **"example.com"** is the main domain you want to issue the cert for.
 You must have at least one domain there.
@@ -183,7 +199,7 @@ The ownership and permission info of existing files are preserved. You may want
 
 Install/copy the issued cert/key to the production Apache or Nginx path.
 
-The cert will be `renewed every **60** days by default` (which is configurable). Once the cert is renewed, the Apache/Nginx service will be restarted automatically by the command: `service apache2 restart` or `service nginx restart`.
+The cert will be renewed every **60** days by default (which is configurable). Once the cert is renewed, the Apache/Nginx service will be reloaded automatically by the command: `service apache2 force-reload` or `service nginx force-reload`.
 
 
 # 4. Use Standalone server to issue cert
@@ -293,14 +309,12 @@ You don't have to do anything manually!
 1. DNSPod.cn API
 1. CloudXNS.com API
 1. GoDaddy.com API
-1. OVH, kimsufi, soyoustart and runabove API
-1. AWS Route 53
 1. PowerDNS.com API
-1. lexicon DNS API: https://github.com/Neilpang/acme.sh/wiki/How-to-use-lexicon-dns-api
-   (DigitalOcean, DNSimple, DNSMadeEasy, DNSPark, EasyDNS, Namesilo, NS1, PointHQ, Rage4 and Vultr etc.)
+1. OVH, kimsufi, soyoustart and runabove API
+1. nsupdate API
 1. LuaDNS.com API
 1. DNSMadeEasy.com API
-1. nsupdate API
+1. AWS Route 53
 1. aliyun.com(阿里云) API
 1. ISPConfig 3.1 API
 1. Alwaysdata.com API
@@ -313,7 +327,20 @@ You don't have to do anything manually!
 1. DigitalOcean API (native)
 1. ClouDNS.net API
 1. Infoblox NIOS API (https://www.infoblox.com/)
+1. VSCALE (https://vscale.io/)
+1. Dynu API (https://www.dynu.com)
+1. DNSimple API
+1. NS1.com API
+
+
+
+And: 
+
+1. lexicon DNS API: https://github.com/Neilpang/acme.sh/wiki/How-to-use-lexicon-dns-api
+   (DigitalOcean, DNSimple, DNSMadeEasy, DNSPark, EasyDNS, Namesilo, NS1, PointHQ, Rage4 and Vultr etc.)
+
 
+   
 **More APIs coming soon...**
 
 If your DNS provider is not on the supported list above, you can write your own DNS API script easily. If you do, please consider submitting a [Pull Request](https://github.com/Neilpang/acme.sh/pulls) and contribute it to the project.
diff --git a/acme.sh b/acme.sh
index 27bc4fb3..5f500045 100755
--- a/acme.sh
+++ b/acme.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env sh
 
-VER=2.6.9
+VER=2.7.1
 
 PROJECT_NAME="acme.sh"
 
@@ -166,7 +166,14 @@ _syslog() {
   fi
   _logclass="$1"
   shift
-  logger -i -t "$PROJECT_NAME" -p "$_logclass" "$(_printargs "$@")" >/dev/null 2>&1
+  if [ -z "$__logger_i" ]; then
+    if _contains "$(logger --help 2>&1)" "-i"; then
+      __logger_i="logger -i"
+    else
+      __logger_i="logger"
+    fi
+  fi
+  $__logger_i -t "$PROJECT_NAME" -p "$_logclass" "$(_printargs "$@")" >/dev/null 2>&1
 }
 
 _log() {
@@ -436,34 +443,48 @@ if [ "$(printf '\x41')" != 'A' ]; then
   _URGLY_PRINTF=1
 fi
 
+_ESCAPE_XARGS=""
+if [ "$(printf %s '\\x41' | xargs printf)" = 'A' ]; then
+  _ESCAPE_XARGS=1
+fi
+
 _h2b() {
-  hex=$(cat)
-  i=1
-  j=2
+  if _exists xxd; then
+    xxd -r -p
+    return
+  fi
 
-  _debug3 _URGLY_PRINTF "$_URGLY_PRINTF"
-  while true; do
-    if [ -z "$_URGLY_PRINTF" ]; then
-      h="$(printf "%s" "$hex" | cut -c $i-$j)"
-      if [ -z "$h" ]; then
-        break
-      fi
-      printf "\x$h%s"
+  hex=$(cat)
+  ic=""
+  jc=""
+  _debug2 _URGLY_PRINTF "$_URGLY_PRINTF"
+  if [ -z "$_URGLY_PRINTF" ]; then
+    if [ "$_ESCAPE_XARGS" ] && _exists xargs; then
+      _debug2 "xargs"
+      echo "$hex" | _upper_case | sed 's/\([0-9A-F]\{2\}\)/\\\\\\x\1/g' | xargs printf
     else
-      ic="$(printf "%s" "$hex" | cut -c $i)"
-      jc="$(printf "%s" "$hex" | cut -c $j)"
-      if [ -z "$ic$jc" ]; then
-        break
+      for h in $(echo "$hex" | _upper_case | sed 's/\([0-9A-F]\{2\}\)/ \1/g'); do
+        if [ -z "$h" ]; then
+          break
+        fi
+        printf "\x$h%s"
+      done
+    fi
+  else
+    for c in $(echo "$hex" | _upper_case | sed 's/\([0-9A-F]\)/ \1/g'); do
+      if [ -z "$ic" ]; then
+        ic=$c
+        continue
       fi
+      jc=$c
       ic="$(_h_char_2_dec "$ic")"
       jc="$(_h_char_2_dec "$jc")"
       printf '\'"$(printf "%o" "$(_math "$ic" \* 16 + $jc)")""%s"
-    fi
-
-    i="$(_math "$i" + 2)"
-    j="$(_math "$j" + 2)"
+      ic=""
+      jc=""
+    done
+  fi
 
-  done
 }
 
 _is_solaris() {
@@ -1237,17 +1258,20 @@ createDomainKey() {
   fi
 
   domain=$1
-  length=$2
+  _cdl=$2
 
-  if [ -z "$length" ]; then
+  if [ -z "$_cdl" ]; then
     _debug "Use DEFAULT_DOMAIN_KEY_LENGTH=$DEFAULT_DOMAIN_KEY_LENGTH"
-    length="$DEFAULT_DOMAIN_KEY_LENGTH"
+    _cdl="$DEFAULT_DOMAIN_KEY_LENGTH"
   fi
 
-  _initpath "$domain" "$length"
+  _initpath "$domain" "$_cdl"
 
   if [ ! -f "$CERT_KEY_PATH" ] || ([ "$FORCE" ] && ! [ "$IS_RENEW" ]); then
-    _createkey "$length" "$CERT_KEY_PATH"
+    if _createkey "$_cdl" "$CERT_KEY_PATH"; then
+      _savedomainconf Le_Keylength "$_cdl"
+      _info "The domain key is here: $(__green $CERT_KEY_PATH)"
+    fi
   else
     if [ "$IS_RENEW" ]; then
       _info "Domain key exists, skip"
@@ -2617,10 +2641,10 @@ _checkConf() {
 _isRealNginxConf() {
   _debug "_isRealNginxConf $1 $2"
   if [ -f "$2" ]; then
-    for _fln in $(grep -n "^ *server_name.* $1" "$2" | cut -d : -f 1); do
+    for _fln in $(tr "\t" ' ' <"$2" | grep -n "^ *server_name.* $1" | cut -d : -f 1); do
       _debug _fln "$_fln"
       if [ "$_fln" ]; then
-        _start=$(cat "$2" | _head_n "$_fln" | grep -n "^ *server *{" | _tail_n 1)
+        _start=$(tr "\t" ' ' <"$2" | _head_n "$_fln" | grep -n "^ *server *{" | _tail_n 1)
         _debug "_start" "$_start"
         _start_n=$(echo "$_start" | cut -d : -f 1)
         _start_nn=$(_math $_start_n + 1)
@@ -2629,8 +2653,8 @@ _isRealNginxConf() {
 
         _left="$(sed -n "${_start_nn},99999p" "$2")"
         _debug2 _left "$_left"
-        if echo "$_left" | grep -n "^ *server *{" >/dev/null; then
-          _end=$(echo "$_left" | grep -n "^ *server *{" | _head_n 1)
+        if echo "$_left" | tr "\t" ' ' | grep -n "^ *server *{" >/dev/null; then
+          _end=$(echo "$_left" | tr "\t" ' ' | grep -n "^ *server *{" | _head_n 1)
           _debug "_end" "$_end"
           _end_n=$(echo "$_end" | cut -d : -f 1)
           _debug "_end_n" "$_end_n"
diff --git a/deploy/README.md b/deploy/README.md
index d8c2f57c..232fdb4a 100644
--- a/deploy/README.md
+++ b/deploy/README.md
@@ -21,8 +21,11 @@ acme.sh --deploy -d example.com --deploy-hook cpanel
 ## 2. Deploy ssl cert on kong proxy engine based on api.
 
 Before you can deploy your cert, you must [issue the cert first](https://github.com/Neilpang/acme.sh/wiki/How-to-issue-a-cert).
+Currently supports Kong-v0.10.x.
 
-(TODO)
+```sh
+acme.sh --deploy -d ftp.example.com --deploy-hook kong
+```
 
 ## 3. Deploy the cert to remote server through SSH access.
 
diff --git a/deploy/kong.sh b/deploy/kong.sh
index e1873f35..d3a6bc47 100755
--- a/deploy/kong.sh
+++ b/deploy/kong.sh
@@ -1,13 +1,7 @@
 #!/usr/bin/env sh
-
-# This deploy hook will deploy ssl cert on kong proxy engine based on api request_host parameter.
-# Note that ssl plugin should be available on Kong instance
-# The hook will match cdomain to request_host, in case of multiple domain it will always take the first
-# one (acme.sh behaviour).
-# If ssl config already exist it will update only cert and key not touching other parameter
-# If ssl config doesn't exist it will only upload cert and key and not set other parameter
-# Not that we deploy full chain
-# See https://getkong.org/plugins/dynamic-ssl/ for other options
+# If certificate already exist it will update only cert and key not touching other parameter
+# If certificate  doesn't exist it will only upload cert and key and not set other parameter
+# Note that we deploy full chain
 # Written by Geoffroi Genot <ggenot@voxbone.com>
 
 ########  Public functions #####################
@@ -31,14 +25,15 @@ kong_deploy() {
   _debug _cca "$_cca"
   _debug _cfullchain "$_cfullchain"
 
-  #Get uuid linked to the domain
-  uuid=$(_get "$KONG_URL/apis?request_host=$_cdomain" | _normalizeJson | _egrep_o '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}')
-  if [ -z "$uuid" ]; then
-    _err "Unable to get Kong uuid for domain $_cdomain"
-    _err "Make sure that KONG_URL is correctly configured"
-    _err "Make sure that a Kong api request_host match the domain"
-    _err "Kong url: $KONG_URL"
-    return 1
+  #Get ssl_uuid linked to the domain
+  ssl_uuid=$(_get "$KONG_URL/certificates/$_cdomain" | _normalizeJson | _egrep_o '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}')
+  if [ -z "$ssl_uuid" ]; then
+    _debug "Unable to get Kong ssl_uuid for domain $_cdomain"
+    _debug "Make sure that KONG_URL is correctly configured"
+    _debug "Make sure that a Kong certificate match the sni"
+    _debug "Kong url: $KONG_URL"
+    _info "No existing certificate, creating..."
+    #return 1
   fi
   #Save kong url if it's succesful (First run case)
   _saveaccountconf KONG_URL "$KONG_URL"
@@ -48,12 +43,14 @@ kong_deploy() {
   #Set Header
   _H1="Content-Type: multipart/form-data; boundary=$delim"
   #Generate data for request (Multipart/form-data with mixed content)
-  #set name to ssl
-  content="--$delim${nl}Content-Disposition: form-data; name=\"name\"${nl}${nl}ssl"
+  if [ -z "$ssl_uuid" ]; then
+    #set sni to domain
+    content="--$delim${nl}Content-Disposition: form-data; name=\"snis\"${nl}${nl}$_cdomain"
+  fi
   #add key
-  content="$content${nl}--$delim${nl}Content-Disposition: form-data; name=\"config.key\"; filename=\"$(basename "$_ckey")\"${nl}Content-Type: application/octet-stream${nl}${nl}$(cat "$_ckey")"
+  content="$content${nl}--$delim${nl}Content-Disposition: form-data; name=\"key\"; filename=\"$(basename "$_ckey")\"${nl}Content-Type: application/octet-stream${nl}${nl}$(cat "$_ckey")"
   #Add cert
-  content="$content${nl}--$delim${nl}Content-Disposition: form-data; name=\"config.cert\"; filename=\"$(basename "$_cfullchain")\"${nl}Content-Type: application/octet-stream${nl}${nl}$(cat "$_cfullchain")"
+  content="$content${nl}--$delim${nl}Content-Disposition: form-data; name=\"cert\"; filename=\"$(basename "$_cfullchain")\"${nl}Content-Type: application/octet-stream${nl}${nl}$(cat "$_cfullchain")"
   #Close multipart
   content="$content${nl}--$delim--${nl}"
   #Convert CRLF
@@ -61,17 +58,16 @@ kong_deploy() {
   #DEBUG
   _debug header "$_H1"
   _debug content "$content"
-  #Check if ssl plugins is aready enabled (if not => POST else => PATCH)
-  ssl_uuid=$(_get "$KONG_URL/apis/$uuid/plugins" | _egrep_o '"id":"[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}"[a-zA-Z0-9\-\,\"_\:]*"name":"ssl"' | _egrep_o '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}')
-  _debug ssl_uuid "$ssl_uuid"
+  #Check if sslcreated (if not => POST else => PATCH)
+
   if [ -z "$ssl_uuid" ]; then
     #Post certificate to Kong
-    response=$(_post "$content" "$KONG_URL/apis/$uuid/plugins" "" "POST")
+    response=$(_post "$content" "$KONG_URL/certificates" "" "POST")
   else
     #patch
-    response=$(_post "$content" "$KONG_URL/apis/$uuid/plugins/$ssl_uuid" "" "PATCH")
+    response=$(_post "$content" "$KONG_URL/certificates/$ssl_uuid" "" "PATCH")
   fi
-  if ! [ "$(echo "$response" | _egrep_o "ssl")" = "ssl" ]; then
+  if ! [ "$(echo "$response" | _egrep_o "created_at")" = "created_at" ]; then
     _err "An error occurred with cert upload. Check response:"
     _err "$response"
     return 1
diff --git a/dnsapi/README.md b/dnsapi/README.md
index 9eb77915..5dca829a 100644
--- a/dnsapi/README.md
+++ b/dnsapi/README.md
@@ -140,7 +140,7 @@ Finally, make the DNS server and update Key available to `acme.sh`
 
 ```
 export NSUPDATE_SERVER="dns.example.com"
-export NSUPDATE_KEY="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa=="
+export NSUPDATE_KEY="/path/to/your/nsupdate.key"
 ```
 
 Ok, let's issue a cert now:
@@ -422,22 +422,89 @@ acme.sh --issue --dns dns_cloudns -d example.com -d www.example.com
 ```
 
 ## 22. Use Infoblox API
- 
+
 First you need to create/obtain API credentials on your Infoblox appliance.
- 
+
 ```
 export Infoblox_Creds="username:password"
 export Infoblox_Server="ip or fqdn of infoblox appliance"
 ```
- 
+
 Ok, let's issue a cert now:
 ```
 acme.sh --issue --dns dns_infoblox -d example.com -d www.example.com
 ```
- 
+
 Note: This script will automatically create and delete the ephemeral txt record.
 The `Infoblox_Creds` and `Infoblox_Server` will be saved in `~/.acme.sh/account.conf` and will be reused when needed.
 
+
+## 23. Use VSCALE API
+
+First you need to create/obtain API tokens on your [settings panel](https://vscale.io/panel/settings/tokens/).
+
+```
+VSCALE_API_KEY="sdfsdfsdfljlbjkljlkjsdfoiwje"
+```
+
+Ok, let's issue a cert now:
+```
+acme.sh --issue --dns dns_vscale -d example.com -d www.example.com
+```
+
+##  24. Use Dynu API
+
+First you need to create/obtain API credentials from your Dynu account. See: https://www.dynu.com/resources/api/documentation
+
+```
+export Dynu_ClientId="xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
+export Dynu_Secret="yyyyyyyyyyyyyyyyyyyyyyyyy"
+```
+
+Ok, let's issue a cert now:
+```
+acme.sh --issue --dns dns_dynu -d example.com -d www.example.com
+```
+
+The `Dynu_ClientId` and `Dynu_Secret` will be saved in `~/.acme.sh/account.conf` and will be reused when needed.
+
+## 25. Use DNSimple API
+
+First you need to login to your DNSimple account and generate a new oauth token.
+
+https://dnsimple.com/a/{your account id}/account/access_tokens
+
+Note that this is an _account_ token and not a user token. The account token is
+needed to infer the `account_id` used in requests. A user token will not be able
+to determine the correct account to use.
+
+```
+export DNSimple_OAUTH_TOKEN="sdfsdfsdfljlbjkljlkjsdfoiwje"
+```
+
+To issue the cert just specify the `dns_dnsimple` API.
+
+```
+acme.sh --issue --dns dns_dnsimple -d example.com
+```
+
+The `DNSimple_OAUTH_TOKEN` will be saved in `~/.acme.sh/account.conf` and will
+be reused when needed.
+
+If you have any issues with this integration please report them to
+https://github.com/pho3nixf1re/acme.sh/issues.
+
+## 26. Use NS1.com API
+
+```
+export NS1_Key="fdmlfsdklmfdkmqsdfk"
+```
+
+Ok, let's issue a cert now:
+```
+acme.sh --issue --dns dns_nsone -d example.com -d www.example.com
+```
+
 # Use custom API
 
 If your API is not supported yet, you can write your own DNS API.
diff --git a/dnsapi/dns_aws.sh b/dnsapi/dns_aws.sh
index 21e86686..800c3d09 100755
--- a/dnsapi/dns_aws.sh
+++ b/dnsapi/dns_aws.sh
@@ -106,7 +106,7 @@ _get_root() {
       fi
 
       if _contains "$response" "<Name>$h.</Name>"; then
-        hostedzone="$(echo "$response" | sed 's/<HostedZone>/#&/g' | tr '#' '\n' | _egrep_o "<HostedZone><Id>[^<]*<.Id><Name>$h.<.Name>.*<.HostedZone>")"
+        hostedzone="$(echo "$response" | sed 's/<HostedZone>/#&/g' | tr '#' '\n' | _egrep_o "<HostedZone><Id>[^<]*<.Id><Name>$h.<.Name>.*<PrivateZone>false<.PrivateZone>.*<.HostedZone>")"
         _debug hostedzone "$hostedzone"
         if [ -z "$hostedzone" ]; then
           _err "Error, can not get hostedzone."
diff --git a/dnsapi/dns_dnsimple.sh b/dnsapi/dns_dnsimple.sh
new file mode 100644
index 00000000..0bfe2b99
--- /dev/null
+++ b/dnsapi/dns_dnsimple.sh
@@ -0,0 +1,215 @@
+#!/usr/bin/env sh
+
+# DNSimple domain api
+# https://github.com/pho3nixf1re/acme.sh/issues
+#
+# This is your oauth token which can be acquired on the account page. Please
+# note that this must be an _account_ token and not a _user_ token.
+# https://dnsimple.com/a/<your account id>/account/access_tokens
+# DNSimple_OAUTH_TOKEN="sdfsdfsdfljlbjkljlkjsdfoiwje"
+
+DNSimple_API="https://api.dnsimple.com/v2"
+
+########  Public functions #####################
+
+# Usage: add  _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_dnsimple_add() {
+  fulldomain=$1
+  txtvalue=$2
+
+  if [ -z "$DNSimple_OAUTH_TOKEN" ]; then
+    DNSimple_OAUTH_TOKEN=""
+    _err "You have not set the dnsimple oauth token yet."
+    _err "Please visit https://dnsimple.com/user to generate it."
+    return 1
+  fi
+
+  # save the oauth token for later
+  _saveaccountconf DNSimple_OAUTH_TOKEN "$DNSimple_OAUTH_TOKEN"
+
+  if ! _get_account_id; then
+    _err "failed to retrive account id"
+    return 1
+  fi
+
+  if ! _get_root "$fulldomain"; then
+    _err "invalid domain"
+    return 1
+  fi
+
+  _get_records "$_account_id" "$_domain" "$_sub_domain"
+
+  if [ "$_records_count" = "0" ]; then
+    _info "Adding record"
+    if _dnsimple_rest POST "$_account_id/zones/$_domain/records" "{\"type\":\"TXT\",\"name\":\"$_sub_domain\",\"content\":\"$txtvalue\",\"ttl\":120}"; then
+      if printf -- "%s" "$response" | grep "\"name\":\"$_sub_domain\"" >/dev/null; then
+        _info "Added"
+        return 0
+      else
+        _err "Unexpected response while adding text record."
+        return 1
+      fi
+    fi
+    _err "Add txt record error."
+  else
+    _info "Updating record"
+    _extract_record_id "$_records" "$_sub_domain"
+
+    if _dnsimple_rest \
+      PATCH \
+      "$_account_id/zones/$_domain/records/$_record_id" \
+      "{\"type\":\"TXT\",\"name\":\"$_sub_domain\",\"content\":\"$txtvalue\",\"ttl\":120}"; then
+
+      _info "Updated!"
+      return 0
+    fi
+
+    _err "Update error"
+    return 1
+  fi
+}
+
+# fulldomain
+dns_dnsimple_rm() {
+  fulldomain=$1
+
+  if ! _get_account_id; then
+    _err "failed to retrive account id"
+    return 1
+  fi
+
+  if ! _get_root "$fulldomain"; then
+    _err "invalid domain"
+    return 1
+  fi
+
+  _get_records "$_account_id" "$_domain" "$_sub_domain"
+  _extract_record_id "$_records" "$_sub_domain"
+
+  if [ "$_record_id" ]; then
+
+    if _dnsimple_rest DELETE "$_account_id/zones/$_domain/records/$_record_id"; then
+      _info "removed record" "$_record_id"
+      return 0
+    fi
+  fi
+
+  _err "failed to remove record" "$_record_id"
+  return 1
+
+}
+
+####################  Private functions bellow ##################################
+# _acme-challenge.www.domain.com
+# returns
+#   _sub_domain=_acme-challenge.www
+#   _domain=domain.com
+_get_root() {
+  domain=$1
+  i=2
+  previous=1
+  while true; do
+    h=$(printf "%s" "$domain" | cut -d . -f $i-100)
+    if [ -z "$h" ]; then
+      # not valid
+      return 1
+    fi
+
+    if ! _dnsimple_rest GET "$_account_id/zones/$h"; then
+      return 1
+    fi
+
+    if _contains "$response" 'not found'; then
+      _debug "$h not found"
+    else
+      _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$previous)
+      _domain="$h"
+
+      _debug _domain "$_domain"
+      _debug _sub_domain "$_sub_domain"
+
+      return 0
+    fi
+
+    previous="$i"
+    i=$(_math "$i" + 1)
+  done
+  return 1
+}
+
+# returns _account_id
+_get_account_id() {
+  _debug "retrive account id"
+  if ! _dnsimple_rest GET "whoami"; then
+    return 1
+  fi
+
+  if _contains "$response" "\"account\":null"; then
+    _err "no account associated with this token"
+    return 1
+  fi
+
+  if _contains "$response" "timeout"; then
+    _err "timeout retrieving account id"
+    return 1
+  fi
+
+  _account_id=$(printf "%s" "$response" | _egrep_o "\"id\":[^,]*,\"email\":" | cut -d: -f2 | cut -d, -f1)
+  _debug _account_id "$_account_id"
+
+  return 0
+}
+
+# returns
+#   _records
+#   _records_count
+_get_records() {
+  account_id=$1
+  domain=$2
+  sub_domain=$3
+
+  _debug "fetching txt records"
+  _dnsimple_rest GET "$account_id/zones/$domain/records?per_page=100"
+
+  if ! _contains "$response" "\"id\":"; then
+    _err "failed to retrieve records"
+    return 1
+  fi
+
+  _records_count=$(printf "%s" "$response" | _egrep_o "\"name\":\"$sub_domain\"" | wc -l | _egrep_o "[0-9]+")
+  _records=$response
+  _debug _records_count "$_records_count"
+}
+
+# returns _record_id
+_extract_record_id() {
+  _record_id=$(printf "%s" "$_records" | _egrep_o "\"id\":[^,]*,\"zone_id\":\"[^,]*\",\"parent_id\":null,\"name\":\"$_sub_domain\"" | cut -d: -f2 | cut -d, -f1)
+  _debug "_record_id" "$_record_id"
+}
+
+# returns response
+_dnsimple_rest() {
+  method=$1
+  path="$2"
+  data="$3"
+  request_url="$DNSimple_API/$path"
+  _debug "$path"
+
+  export _H1="Accept: application/json"
+  export _H2="Authorization: Bearer $DNSimple_OAUTH_TOKEN"
+
+  if [ "$data" ] || [ "$method" = "DELETE" ]; then
+    _H1="Content-Type: application/json"
+    _debug data "$data"
+    response="$(_post "$data" "$request_url" "" "$method")"
+  else
+    response="$(_get "$request_url" "" "" "$method")"
+  fi
+
+  if [ "$?" != "0" ]; then
+    _err "error $request_url"
+    return 1
+  fi
+  _debug2 response "$response"
+  return 0
+}
diff --git a/dnsapi/dns_dynu.sh b/dnsapi/dns_dynu.sh
new file mode 100644
index 00000000..f6eabde2
--- /dev/null
+++ b/dnsapi/dns_dynu.sh
@@ -0,0 +1,216 @@
+#!/usr/bin/env sh
+
+#Client ID
+#Dynu_ClientId="0b71cae7-a099-4f6b-8ddf-94571cdb760d"
+#
+#Secret
+#Dynu_Secret="aCUEY4BDCV45KI8CSIC3sp2LKQ9"
+#
+#Token
+Dynu_Token=""
+#
+#Endpoint
+Dynu_EndPoint="https://api.dynu.com/v1"
+#
+#Author: Dynu Systems, Inc.
+#Report Bugs here: https://github.com/shar0119/acme.sh
+#
+########  Public functions #####################
+
+#Usage: add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_dynu_add() {
+  fulldomain=$1
+  txtvalue=$2
+
+  if [ -z "$Dynu_ClientId" ] || [ -z "$Dynu_Secret" ]; then
+    Dynu_ClientId=""
+    Dynu_Secret=""
+    _err "Dynu client id and secret is not specified."
+    _err "Please create you API client id and secret and try again."
+    return 1
+  fi
+
+  #save the client id and secret to the account conf file.
+  _saveaccountconf Dynu_ClientId "$Dynu_ClientId"
+  _saveaccountconf Dynu_Secret "$Dynu_Secret"
+
+  if [ -z "$Dynu_Token" ]; then
+    _info "Getting Dynu token."
+    if ! _dynu_authentication; then
+      _err "Can not get token."
+    fi
+  fi
+
+  _debug "Detect root zone"
+  if ! _get_root "$fulldomain"; then
+    _err "Invalid domain."
+    return 1
+  fi
+
+  _debug _node "$_node"
+  _debug _domain_name "$_domain_name"
+
+  _info "Creating TXT record."
+  if ! _dynu_rest POST "dns/record/add" "{\"domain_name\":\"$_domain_name\",\"node_name\":\"$_node\",\"record_type\":\"TXT\",\"text_data\":\"$txtvalue\",\"state\":true,\"ttl\":90}"; then
+    return 1
+  fi
+
+  if ! _contains "$response" "text_data"; then
+    _err "Could not add TXT record."
+    return 1
+  fi
+
+  return 0
+}
+
+#Usage: rm _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_dynu_rm() {
+  fulldomain=$1
+  txtvalue=$2
+
+  if [ -z "$Dynu_ClientId" ] || [ -z "$Dynu_Secret" ]; then
+    Dynu_ClientId=""
+    Dynu_Secret=""
+    _err "Dynu client id and secret is not specified."
+    _err "Please create you API client id and secret and try again."
+    return 1
+  fi
+
+  #save the client id and secret to the account conf file.
+  _saveaccountconf Dynu_ClientId "$Dynu_ClientId"
+  _saveaccountconf Dynu_Secret "$Dynu_Secret"
+
+  if [ -z "$Dynu_Token" ]; then
+    _info "Getting Dynu token."
+    if ! _dynu_authentication; then
+      _err "Can not get token."
+    fi
+  fi
+
+  _debug "Detect root zone."
+  if ! _get_root "$fulldomain"; then
+    _err "Invalid domain."
+    return 1
+  fi
+
+  _debug _node "$_node"
+  _debug _domain_name "$_domain_name"
+
+  _info "Checking for TXT record."
+  if ! _get_recordid "$fulldomain" "$txtvalue"; then
+    _err "Could not get TXT record id."
+    return 1
+  fi
+
+  if [ "$_dns_record_id" = "" ]; then
+    _err "TXT record not found."
+    return 1
+  fi
+
+  _info "Removing TXT record."
+  if ! _delete_txt_record "$_dns_record_id"; then
+    _err "Could not remove TXT record $_dns_record_id."
+  fi
+
+  return 0
+}
+
+########  Private functions below ##################################
+#_acme-challenge.www.domain.com
+#returns
+# _node=_acme-challenge.www
+# _domain_name=domain.com
+_get_root() {
+  domain=$1
+  if ! _dynu_rest GET "dns/getroot/$domain"; then
+    return 1
+  fi
+
+  if ! _contains "$response" "domain_name"; then
+    _debug "Domain name not found."
+    return 1
+  fi
+
+  _domain_name=$(printf "%s" "$response" | tr -d "{}" | cut -d , -f 1 | cut -d : -f 2 | cut -d '"' -f 2)
+  _node=$(printf "%s" "$response" | tr -d "{}" | cut -d , -f 3 | cut -d : -f 2 | cut -d '"' -f 2)
+  return 0
+}
+
+_get_recordid() {
+  fulldomain=$1
+  txtvalue=$2
+
+  if ! _dynu_rest GET "dns/record/get?hostname=$fulldomain&rrtype=TXT"; then
+    return 1
+  fi
+
+  if ! _contains "$response" "$txtvalue"; then
+    _dns_record_id=0
+    return 0
+  fi
+
+  _dns_record_id=$(printf "%s" "$response" | _egrep_o "{[^}]*}" | grep "\"text_data\":\"$txtvalue\"" | _egrep_o ",[^,]*," | grep ',"id":' | tr -d ",," | cut -d : -f 2)
+
+  return 0
+}
+
+_delete_txt_record() {
+  _dns_record_id=$1
+
+  if ! _dynu_rest GET "dns/record/delete/$_dns_record_id"; then
+    return 1
+  fi
+
+  if ! _contains "$response" "true"; then
+    return 1
+  fi
+
+  return 0
+}
+
+_dynu_rest() {
+  m=$1
+  ep="$2"
+  data="$3"
+  _debug "$ep"
+
+  export _H1="Authorization: Bearer $Dynu_Token"
+  export _H2="Content-Type: application/json"
+
+  if [ "$data" ]; then
+    _debug data "$data"
+    response="$(_post "$data" "$Dynu_EndPoint/$ep" "" "$m")"
+  else
+    _info "Getting $Dynu_EndPoint/$ep"
+    response="$(_get "$Dynu_EndPoint/$ep")"
+  fi
+
+  if [ "$?" != "0" ]; then
+    _err "error $ep"
+    return 1
+  fi
+  _debug2 response "$response"
+  return 0
+}
+
+_dynu_authentication() {
+  realm="$(printf "%s" "$Dynu_ClientId:$Dynu_Secret" | _base64)"
+
+  export _H1="Authorization: Basic $realm"
+  export _H2="Content-Type: application/json"
+
+  response="$(_get "$Dynu_EndPoint/oauth2/token")"
+  if [ "$?" != "0" ]; then
+    _err "Authentication failed."
+    return 1
+  fi
+  if _contains "$response" "accessToken"; then
+    Dynu_Token=$(printf "%s" "$response" | tr -d "[]" | cut -d , -f 2 | cut -d : -f 2 | cut -d '"' -f 2)
+  fi
+  if _contains "$Dynu_Token" "null"; then
+    Dynu_Token=""
+  fi
+
+  _debug2 response "$response"
+  return 0
+}
diff --git a/dnsapi/dns_gandi_livedns.sh b/dnsapi/dns_gandi_livedns.sh
index 28b8f99d..82ed599c 100755
--- a/dnsapi/dns_gandi_livedns.sh
+++ b/dnsapi/dns_gandi_livedns.sh
@@ -37,7 +37,7 @@ dns_gandi_livedns_add() {
   _debug sub_domain "$_sub_domain"
 
   _gandi_livedns_rest PUT "domains/$_domain/records/$_sub_domain/TXT" "{\"rrset_ttl\": 300, \"rrset_values\":[\"$txtvalue\"]}" \
-    && _contains "$response" '{"message": "Zone Record Created"}' \
+    && _contains "$response" '{"message": "DNS Record Created"}' \
     && _info "Add $(__green "success")"
 }
 
diff --git a/dnsapi/dns_nsone.sh b/dnsapi/dns_nsone.sh
new file mode 100644
index 00000000..adf1f422
--- /dev/null
+++ b/dnsapi/dns_nsone.sh
@@ -0,0 +1,158 @@
+#!/usr/bin/env sh
+
+# bug reports to dev@1e.ca
+
+#
+#NS1_Key="sdfsdfsdfljlbjkljlkjsdfoiwje"
+#
+
+NS1_Api="https://api.nsone.net/v1"
+
+########  Public functions #####################
+
+#Usage: add  _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_nsone_add() {
+  fulldomain=$1
+  txtvalue=$2
+
+  if [ -z "$NS1_Key" ]; then
+    NS1_Key=""
+    _err "You didn't specify nsone dns api key yet."
+    _err "Please create you key and try again."
+    return 1
+  fi
+
+  #save the api key and email to the account conf file.
+  _saveaccountconf NS1_Key "$NS1_Key"
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    _err "invalid domain"
+    return 1
+  fi
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+
+  _debug "Getting txt records"
+  _nsone_rest GET "zones/${_domain}"
+
+  if ! _contains "$response" "\"records\":"; then
+    _err "Error"
+    return 1
+  fi
+
+  count=$(printf "%s\n" "$response" | _egrep_o "\"domain\":\"$fulldomain\",[^{]*\"type\":\"TXT\"" | wc -l | tr -d " ")
+  _debug count "$count"
+  if [ "$count" = "0" ]; then
+    _info "Adding record"
+
+    if _nsone_rest PUT "zones/$_domain/$fulldomain/TXT" "{\"answers\":[{\"answer\":[\"$txtvalue\"]}],\"type\":\"TXT\",\"domain\":\"$fulldomain\",\"zone\":\"$_domain\"}"; then
+      if _contains "$response" "$fulldomain"; then
+        _info "Added"
+        #todo: check if the record takes effect
+        return 0
+      else
+        _err "Add txt record error."
+        return 1
+      fi
+    fi
+    _err "Add txt record error."
+  else
+    _info "Updating record"
+    record_id=$(printf "%s\n" "$response" | _egrep_o "\"domain\":\"$fulldomain.\",[^{]*\"type\":\"TXT\",\"id\":\"[^,]*\"" | _head_n 1 | cut -d: -f7 | cut -d, -f1)
+    _debug "record_id" "$record_id"
+
+    _nsone_rest POST "zones/$_domain/$fulldomain/TXT" "{\"answers\": [{\"answer\": [\"$txtvalue\"]}],\"type\": \"TXT\",\"domain\":\"$fulldomain\",\"zone\": \"$_domain\"}"
+    if [ "$?" = "0" ] && _contains "$response" "$fulldomain"; then
+      _info "Updated!"
+      #todo: check if the record takes effect
+      return 0
+    fi
+    _err "Update error"
+    return 1
+  fi
+
+}
+
+#fulldomain
+dns_nsone_rm() {
+  fulldomain=$1
+  txtvalue=$2
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    _err "invalid domain"
+    return 1
+  fi
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+
+  _debug "Getting txt records"
+  _nsone_rest GET "zones/${_domain}/$fulldomain/TXT"
+
+  count=$(printf "%s\n" "$response" | _egrep_o "\"domain\":\"$fulldomain\",.*\"type\":\"TXT\"" | wc -l | tr -d " ")
+  _debug count "$count"
+  if [ "$count" = "0" ]; then
+    _info "Don't need to remove."
+  else
+    if ! _nsone_rest DELETE "zones/${_domain}/$fulldomain/TXT"; then
+      _err "Delete record error."
+      return 1
+    fi
+    _contains "$response" ""
+  fi
+}
+
+####################  Private functions below ##################################
+#_acme-challenge.www.domain.com
+#returns
+# _sub_domain=_acme-challenge.www
+# _domain=domain.com
+# _domain_id=sdjkglgdfewsdfg
+_get_root() {
+  domain=$1
+  i=2
+  p=1
+  if ! _nsone_rest GET "zones"; then
+    return 1
+  fi
+  while true; do
+    h=$(printf "%s" "$domain" | cut -d . -f $i-100)
+    _debug h "$h"
+    if [ -z "$h" ]; then
+      #not valid
+      return 1
+    fi
+
+    if _contains "$response" "\"zone\":\"$h\""; then
+      _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
+      _domain="$h"
+      return 0
+    fi
+    p=$i
+    i=$(_math "$i" + 1)
+  done
+  return 1
+}
+
+_nsone_rest() {
+  m=$1
+  ep="$2"
+  data="$3"
+  _debug "$ep"
+
+  export _H1="Accept: application/json"
+  export _H2="X-NSONE-Key: $NS1_Key"
+  if [ "$m" != "GET" ]; then
+    _debug data "$data"
+    response="$(_post "$data" "$NS1_Api/$ep" "" "$m")"
+  else
+    response="$(_get "$NS1_Api/$ep")"
+  fi
+
+  if [ "$?" != "0" ]; then
+    _err "error $ep"
+    return 1
+  fi
+  _debug2 response "$response"
+  return 0
+}
diff --git a/dnsapi/dns_ovh.sh b/dnsapi/dns_ovh.sh
index 18f9c7dc..eaa90bdf 100755
--- a/dnsapi/dns_ovh.sh
+++ b/dnsapi/dns_ovh.sh
@@ -119,7 +119,7 @@ dns_ovh_add() {
 
   _info "Checking authentication"
 
-  response="$(_ovh_rest GET "domain/")"
+  response="$(_ovh_rest GET "domain")"
   if _contains "$response" "INVALID_CREDENTIAL"; then
     _err "The consumer key is invalid: $OVH_CK"
     _err "Please retry to create a new one."
@@ -191,7 +191,7 @@ _ovh_authentication() {
   _H3=""
   _H4=""
 
-  _ovhdata='{"accessRules": [{"method": "GET","path": "/*"},{"method": "POST","path": "/*"},{"method": "PUT","path": "/*"},{"method": "DELETE","path": "/*"}],"redirection":"'$ovh_success'"}'
+  _ovhdata='{"accessRules": [{"method": "GET","path": "/auth/time"},{"method": "GET","path": "/domain"},{"method": "GET","path": "/domain/zone/*"},{"method": "GET","path": "/domain/zone/*/record"},{"method": "POST","path": "/domain/zone/*/record"},{"method": "POST","path": "/domain/zone/*/refresh"},{"method": "PUT","path": "/domain/zone/*/record/*"}],"redirection":"'$ovh_success'"}'
 
   response="$(_post "$_ovhdata" "$OVH_API/auth/credential")"
   _debug3 response "$response"
@@ -238,7 +238,7 @@ _get_root() {
       return 1
     fi
 
-    if ! _contains "$response" "This service does not exist" >/dev/null; then
+    if ! _contains "$response" "This service does not exist" >/dev/null && ! _contains "$response" "NOT_GRANTED_CALL" >/dev/null; then
       _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
       _domain="$h"
       return 0
diff --git a/dnsapi/dns_vscale.sh b/dnsapi/dns_vscale.sh
new file mode 100755
index 00000000..e50b7d8b
--- /dev/null
+++ b/dnsapi/dns_vscale.sh
@@ -0,0 +1,149 @@
+#!/usr/bin/env sh
+
+#This is the vscale.io api wrapper for acme.sh
+#
+#Author: Alex Loban
+#Report Bugs here: https://github.com/LAV45/acme.sh
+
+#VSCALE_API_KEY="sdfsdfsdfljlbjkljlkjsdfoiwje"
+VSCALE_API_URL="https://api.vscale.io/v1"
+
+########  Public functions #####################
+
+#Usage: dns_myapi_add   _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_vscale_add() {
+  fulldomain=$1
+  txtvalue=$2
+
+  if [ -z "$VSCALE_API_KEY" ]; then
+    VSCALE_API_KEY=""
+    _err "You didn't specify the VSCALE api key yet."
+    _err "Please create you key and try again."
+    return 1
+  fi
+
+  _saveaccountconf VSCALE_API_KEY "$VSCALE_API_KEY"
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    _err "invalid domain"
+    return 1
+  fi
+  _debug _domain_id "$_domain_id"
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+
+  _vscale_tmpl_json="{\"type\":\"TXT\",\"name\":\"$_sub_domain.$_domain\",\"content\":\"$txtvalue\"}"
+
+  if _vscale_rest POST "domains/$_domain_id/records/" "$_vscale_tmpl_json"; then
+    response=$(printf "%s\n" "$response" | _egrep_o "{\"error\": \".+\"" | cut -d : -f 2)
+    if [ -z "$response" ]; then
+      _info "txt record updated success."
+      return 0
+    fi
+  fi
+
+  return 1
+}
+
+#fulldomain txtvalue
+dns_vscale_rm() {
+  fulldomain=$1
+  txtvalue=$2
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    _err "invalid domain"
+    return 1
+  fi
+  _debug _domain_id "$_domain_id"
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+
+  _debug "Getting txt records"
+  _vscale_rest GET "domains/$_domain_id/records/"
+
+  if [ -n "$response" ]; then
+    record_id=$(printf "%s\n" "$response" | _egrep_o "\"TXT\", \"id\": [0-9]+, \"name\": \"$_sub_domain.$_domain\"" | cut -d : -f 2 | tr -d ", \"name\"")
+    _debug record_id "$record_id"
+    if [ -z "$record_id" ]; then
+      _err "Can not get record id to remove."
+      return 1
+    fi
+    if _vscale_rest DELETE "domains/$_domain_id/records/$record_id" && [ -z "$response" ]; then
+      _info "txt record deleted success."
+      return 0
+    fi
+    _debug response "$response"
+    return 1
+  fi
+
+  return 1
+}
+
+####################  Private functions below ##################################
+#_acme-challenge.www.domain.com
+#returns
+# _sub_domain=_acme-challenge.www
+# _domain=domain.com
+# _domain_id=12345
+_get_root() {
+  domain=$1
+  i=2
+  p=1
+
+  if _vscale_rest GET "domains/"; then
+    response="$(echo "$response" | tr -d "\n" | sed 's/{/\n&/g')"
+    while true; do
+      h=$(printf "%s" "$domain" | cut -d . -f $i-100)
+      _debug h "$h"
+      if [ -z "$h" ]; then
+        #not valid
+        return 1
+      fi
+
+      hostedzone="$(echo "$response" | _egrep_o "{.*\"name\":\s*\"$h\".*}")"
+      if [ "$hostedzone" ]; then
+        _domain_id=$(printf "%s\n" "$hostedzone" | _egrep_o "\"id\":\s*[0-9]+" | _head_n 1 | cut -d : -f 2 | tr -d \ )
+        if [ "$_domain_id" ]; then
+          _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
+          _domain=$h
+          return 0
+        fi
+        return 1
+      fi
+      p=$i
+      i=$(_math "$i" + 1)
+    done
+  fi
+  return 1
+}
+
+#method uri qstr data
+_vscale_rest() {
+  mtd="$1"
+  ep="$2"
+  data="$3"
+
+  _debug mtd "$mtd"
+  _debug ep "$ep"
+
+  export _H1="Accept: application/json"
+  export _H2="Content-Type: application/json"
+  export _H3="X-Token: ${VSCALE_API_KEY}"
+
+  if [ "$mtd" != "GET" ]; then
+    # both POST and DELETE.
+    _debug data "$data"
+    response="$(_post "$data" "$VSCALE_API_URL/$ep" "" "$mtd")"
+  else
+    response="$(_get "$VSCALE_API_URL/$ep")"
+  fi
+
+  if [ "$?" != "0" ]; then
+    _err "error $ep"
+    return 1
+  fi
+  _debug2 response "$response"
+  return 0
+}