[MIKROTIK] Dynamic DNS Update Script for No-IP DNS

This script was designed to utilize the No-IP Update API which offers direct access to No-IP's DNS update system.

This script is based on the Dynamic DNS Update Script for changeip.com.

Tested to work on RouterOS MikroTik V. 4.xx and 5.2x

/system script
add name=HomingBeacon policy=\
    ftp,reboot,read,write,policy,test,winbox,password,sniff,sensitive,api \
    source="# HomingBeacon Main Dynamic DNS Update Script\r\
    \n# Written by Sam Norris, ChangeIP.com\r\
    \n# 20100728 Tested on RouterOS 4.9\r\
    \n# 20110511 Tested on RouterOS 5.2\r\
    \n\r\
    \n# Set your specific ChangeIP.com preferences here.\r\
    \n:global ddnsuser \"user.changeip.com\"\r\
    \n:global ddnspass \"password.changeip.com\"\r\
    \n:global ddnshost \"hostname.changeip.net\"\r\
    \n# Change ddnsport to 8245 to bypass proxy.\r\
    \n:local ddnsport 80\r\
    \n\r\
    \n# Do not edit anything below this line.  You have been warned.\r\
    \n# Abusive updates to the system will cause firewall blocks.\r\
    \n\r\
    \n# Please be considerate and\r\
    \n# do not let this script run more than once per 3-5 minutes.\r\
    \n\r\
    \n:log info \"DDNS: Starting.\"\r\
    \n\r\
    \n# Initialize checkpoint\r\
    \n:global ddnscheckpoint\r\
    \n:if ([:typeof \$ddnscheckpoint] = \"time\") do={\r\
    \n\t:log info (\"DDNS: Last check was \" . ([/system clock get time] - \$d\
    dnscheckpoint))\r\
    \n} else={\r\
    \n\t:log info \"DDNS: Cannot determine checkpoint, set now.\"\r\
    \n\t:global ddnscheckpoint ( [/system clock get time] - 1d )\r\
    \n}\r\
    \n\r\
    \n# Get the current IP\r\
    \n:if ([/system clock get time] - \$ddnscheckpoint > [:totime 180s] || [/s\
    ystem clock get time] - \$ddnscheckpoint < [:totime 0s]) do={\r\
    \n   :log info \"DDNS: Performing remote IP detection.\"\r\
    \n   /tool fetch address=\"ip.changeip.com\" host=\"ip.changeip.com\" src-\
    path=(\"/\?\" . [/int eth get 0 mac-address ]) dst-path=\"ip.changeip.com.\
    txt\" mode=http port=\$ddnsport\r\
    \n   :global ddnscheckpoint [/system clock get time]\r\
    \n} else={\r\
    \n   :log info \"DDNS: Please be considerate and wait a few seconds longer\
    .\"\r\
    \n   :break\r\
    \n}\r\
    \n\r\
    \n# Parse the IP address received from fetch script.\r\
    \n\t:global ddnslastip\r\
    \n\t:local html [/file get \"ip.changeip.com.txt\" contents]\r\
    \n\t:local ddnsip [:pick \$html ([:find \$html \"<!--IPADDR=\"] + 11) [:fi\
    nd \$html \"-->\"] ]\r\
    \n\r\
    \n# Is it a valid IP and is it different than the last one\?\r\
    \n\t:if ([:typeof [:toip \$ddnsip]] = \"ip\" AND \$ddnsip != \$ddnslastip \
    ) do={\r\
    \n\t\t:log info \"DDNS: Sending UPDATE with \$ddnsip\"\r\
    \n\t\t:log info [/tool dns-update name=\$ddnshost address=\$ddnsip key-nam\
    e=\$ddnsuser key=\$ddnspass ]\r\
    \n\t\t:global ddnslastip \$ddnsip\r\
    \n\t} else={\r\
    \n\t\t:log info \"DDNS: No update required.\"\r\
    \n\t}\r\
    \n}\r\
    \n"

/system scheduler
add comment="ChangeIP.com Dynamic DNS Update" \
  disabled=no \
  interval=5m name=DynamicDNS \
  on-event=HomingBeacon \
  policy=read,write start-time=startup

NOTE:
Replace the red writing with user and passwd you changeip.com following the host.

Good Luck :D