diff --git a/README.md b/README.md
index 793df06a..8d749dcc 100644
--- a/README.md
+++ b/README.md
@@ -355,6 +355,7 @@ You don't have to do anything manually!
 1. Thermo.io API (https://www.thermo.io)
 1. Futurehosting API (https://www.futurehosting.com)
 1. Rackspace Cloud DNS (https://www.rackspace.com)
+1. Online.net API (https://online.net/)
 
 And:
 
diff --git a/dnsapi/README.md b/dnsapi/README.md
index c136ed35..f022cab0 100644
--- a/dnsapi/README.md
+++ b/dnsapi/README.md
@@ -1243,6 +1243,22 @@ Now, let's issue a cert:
 acme.sh --issue --dns dns_rackspace -d example.com -d www.example.com
 ```
 
+## 65. Use Online API
+
+First, you'll need to retrive your API key, which is available under https://console.online.net/en/api/access
+
+```
+export ONLINE_API_KEY='xxx'
+```
+
+To issue a cert run:
+
+```
+acme.sh --issue --dns dns_online -d example.com -d www.example.com
+```
+
+`ONLINE_API_KEY` will be saved in `~/.acme.sh/account.conf` and will be reused when needed.
+
 # Use custom API
 
 If your API is not supported yet, you can write your own DNS API.
diff --git a/dnsapi/dns_online.sh b/dnsapi/dns_online.sh
new file mode 100755
index 00000000..9158c268
--- /dev/null
+++ b/dnsapi/dns_online.sh
@@ -0,0 +1,217 @@
+#!/usr/bin/env sh
+
+# Online API
+# https://console.online.net/en/api/
+#
+# Requires Online API key set in ONLINE_API_KEY
+
+########  Public functions #####################
+
+ONLINE_API="https://api.online.net/api/v1"
+
+#Usage: add  _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_online_add() {
+  fulldomain=$1
+  txtvalue=$2
+
+  if ! _online_check_config; then
+    return 1
+  fi
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    _err "invalid domain"
+    return 1
+  fi
+
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+  _debug _real_dns_version "$_real_dns_version"
+
+  _info "Creating temporary zone version"
+  _online_create_temporary_zone_version
+  _info "Enabling temporary zone version"
+  _online_enable_zone "$_temporary_dns_version"
+
+  _info "Adding record"
+  _online_create_TXT_record "$_real_dns_version" "$_sub_domain" "$txtvalue"
+  _info "Disabling temporary version"
+  _online_enable_zone "$_real_dns_version"
+  _info "Destroying temporary version"
+  _online_destroy_zone "$_temporary_dns_version"
+
+  _info "Record added."
+  return 0
+}
+
+#fulldomain
+dns_online_rm() {
+  fulldomain=$1
+  txtvalue=$2
+
+  if ! _online_check_config; then
+    return 1
+  fi
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    _err "invalid domain"
+    return 1
+  fi
+
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+  _debug _real_dns_version "$_real_dns_version"
+
+  _debug "Getting txt records"
+  if ! _online_rest GET "domain/$_domain/version/active"; then
+    return 1
+  fi
+
+  rid=$(echo "$response" | _egrep_o "\"id\":[0-9]+,\"name\":\"$_sub_domain\",\"data\":\"\\\u0022$txtvalue\\\u0022\"" | cut -d ':' -f 2 | cut -d ',' -f 1)
+  _debug rid "$rid"
+  if [ -z "$rid" ]; then
+    return 1
+  fi
+
+  _info "Creating temporary zone version"
+  _online_create_temporary_zone_version
+  _info "Enabling temporary zone version"
+  _online_enable_zone "$_temporary_dns_version"
+
+  _info "Removing DNS record"
+  _online_rest DELETE "domain/$_domain/version/$_real_dns_version/zone/$rid"
+  _info "Disabling temporary version"
+  _online_enable_zone "$_real_dns_version"
+  _info "Destroying temporary version"
+  _online_destroy_zone "$_temporary_dns_version"
+
+  return 0
+}
+
+####################  Private functions below ##################################
+
+_online_check_config() {
+  ONLINE_API_KEY="${ONLINE_API_KEY:-$(_readaccountconf_mutable ONLINE_API_KEY)}"
+  if [ -z "$ONLINE_API_KEY" ]; then
+    _err "No API key specified for Online API."
+    _err "Create your key and export it as ONLINE_API_KEY"
+    return 1
+  fi
+  if ! _online_rest GET "domain/"; then
+    _err "Invalid API key specified for Online API."
+    return 1
+  fi
+
+  _saveaccountconf_mutable ONLINE_API_KEY "$ONLINE_API_KEY"
+
+  return 0
+}
+
+#_acme-challenge.www.domain.com
+#returns
+# _sub_domain=_acme-challenge.www
+# _domain=domain.com
+_get_root() {
+  domain=$1
+  i=2
+  p=1
+  while true; do
+    h=$(printf "%s" "$domain" | cut -d . -f $i-100)
+    if [ -z "$h" ]; then
+      #not valid
+      return 1
+    fi
+
+    _online_rest GET "domain/$h/version/active"
+
+    if ! _contains "$response" "Domain not found" >/dev/null; then
+      _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
+      _domain="$h"
+      _real_dns_version=$(echo "$response" | _egrep_o '"uuid_ref":.*' | cut -d ':' -f 2 | cut -d '"' -f 2)
+      return 0
+    fi
+    p=$i
+    i=$(_math "$i" + 1)
+  done
+  _err "Unable to retrive DNS zone matching this domain"
+  return 1
+}
+
+# this function create a temporary zone version
+# as online.net does not allow updating an active version
+_online_create_temporary_zone_version() {
+
+  _online_rest POST "domain/$_domain/version" "name=acme.sh"
+  if [ "$?" != "0" ]; then
+    return 1
+  fi
+
+  _temporary_dns_version=$(echo "$response" | _egrep_o '"uuid_ref":.*' | cut -d ':' -f 2 | cut -d '"' -f 2)
+
+  # Creating a dummy record in this temporary version, because online.net doesn't accept enabling an empty version
+  _online_create_TXT_record "$_temporary_dns_version" "dummy.acme.sh" "dummy"
+
+  return 0
+}
+
+_online_destroy_zone() {
+  version_id=$1
+  _online_rest DELETE "domain/$_domain/version/$version_id"
+
+  if [ "$?" != "0" ]; then
+    return 1
+  fi
+  return 0
+}
+
+_online_enable_zone() {
+  version_id=$1
+  _online_rest PATCH "domain/$_domain/version/$version_id/enable"
+
+  if [ "$?" != "0" ]; then
+    return 1
+  fi
+  return 0
+}
+
+_online_create_TXT_record() {
+  version=$1
+  txt_name=$2
+  txt_value=$3
+
+  _online_rest POST "domain/$_domain/version/$version/zone" "type=TXT&name=$txt_name&data=%22$txt_value%22&ttl=60&priority=0"
+
+  # Note : the normal, expected response SHOULD be "Unknown method".
+  # this happens because the API HTTP response contains a Location: header, that redirect
+  # to an unknown online.net endpoint.
+  if [ "$?" != "0" ] || _contains "$response" "Unknown method" || _contains "$response" "\$ref"; then
+    return 0
+  else
+    _err "error $response"
+    return 1
+  fi
+}
+
+_online_rest() {
+  m=$1
+  ep="$2"
+  data="$3"
+  _debug "$ep"
+  _online_url="$ONLINE_API/$ep"
+  _debug2 _online_url "$_online_url"
+  export _H1="Authorization: Bearer $ONLINE_API_KEY"
+  export _H2="X-Pretty-JSON: 1"
+  if [ "$data" ] || [ "$m" != "GET" ]; then
+    _debug data "$data"
+    response="$(_post "$data" "$_online_url" "" "$m")"
+  else
+    response="$(_get "$_online_url")"
+  fi
+  if [ "$?" != "0" ] || _contains "$response" "invalid_grant" || _contains "$response" "Method not allowed"; then
+    _err "error $response"
+    return 1
+  fi
+  _debug2 response "$response"
+  return 0
+}