DNS-O-Matic Dynamic IP Endpoint update script for Mikrotik RouterOS

DNSoMatic.rsc

# DNS-O-Matic Dynamic IP Endpoint update script for Mikrotik RouterOS.
# 
# Author: Quan Zhou <public_zhou@outlook.com>
# 
# Description:
# Update IP address of specified hostname through dnsomatic.com
# You need a dnsomatic.com account and whatsoever ddns service
# supported by them.
# 
# Tested ands works with Mikrotik RouterOS 6.32
# 

#--------------- Fill out these fields ------------------
#

# Username of your DNS-o-Matic Account. e.g. user@example.org
:local domUsername "<--USERNAME-->";
# DNS-o-Matic Password, not the DDNS service password/api Token
:local domPassword "<--PASSWORD-->";

# Hostname (FQDN)
# e.g. tokyo.example.org. Besides, example.org must be filled in
# DOMAIN field on the DNS-o-Matic control panel.
:local domHostname "<--HOSTNAME-->";

# Which interface should I get IP address from. 
# e.g pppoe-out1
:local inetinterface "<--INTERFACE-->";

#--------------------- STOP HERE ------------------------

:global prevBrIP1;

:if ([/interface get $inetinterface value-name=running]) do={
# Get the current IP on the interface
   :local currentIP [/ip address get [find interface="$inetinterface" disabled=no] address];

# Strip the net mask off the IP address
   :for i from=( [:len $currentIP] - 1) to=0 do={
       :if ( [:pick $currentIP $i] = "/") do={ 
           :set currentIP [:pick $currentIP 0 $i];
       } 
   }

   :if ($currentIP != $prevBrIP1) do={
      :log info "DNS-o-Matic: Updating A record of $domHostname to $currentIP...";
      :set prevBrIP1 $currentIP;
      :local url "https://updates.dnsomatic.com/nic/update\3Fhostname=$domHostname&myip=$currentIP&wildcard=NOCHG&mx=NOCHG&backmx=NOCHG";
      /tool fetch url=$url user=$domUsername password=$domPassword mode=https dst-path=("dnsOmatic-" . $host . ".txt")
      :log info "DNS-o-Matic: $domHostname now has A record to $currentIP";
      :log info ([/file get ("dnsOmatic-" . $host . ".txt") contents])
      
   } else={
   :log info "DNS-o-Matic: nochg $prevBrIP1";
   }
} else={
   :log info "DNS-o-Matic: $inetinterface is not running, therefore no update will be performed";
}

excelent