What is No-Ip DDNS service?
In this post, I will show you how to create No-Ip DDNS service in PLDT modem router. First create an account in No-Ip website, create a hostname and add this hostname in your PLDT modem.
If you can’t remember your public IP address, then you should use DDNS service. It keeps track of IP address in DNS Record when your internet provider changed it. You have to use the hostname instead of IP address to access DVR, Computer and other devices remotely.
No-Ip is one of the most popular Dynamic DNS service providers, it offers at least 3 hostnames for free.
Creating Hostname
Sign up for No-Ip DDNS account and create hostname.

Click the Confirm link sent in your email to activate your account.
Once activated, click Account to complete your account information including your username.
Then click Dynamic DNS to check or add hostname.

Setting up No-Ip DDNS service on PLDT Modem
Login to PLDT router’s default IP address https://192.168.1.1/
Hover your mouse pointer to Network Setting, then click DNS.

Click Dynamic DNS tab, select Service Provider, Type your Hostname, Username and Password. Click Enable and Apply.

Lastly, check Dynamic DNS Status below, you must get Accepted user authentication result and current Dynamic IP address.
Related: PLDT Customer Care