Prefer used a domain parked on namecheap.
Install
ddclient, debian base linux distro:
sudo apt-get install ddclient -y
sudo vim /etc/ddclient.conf
Use the following content
ssl=yes
use=web, web=dynamicdns.park-your-domain.com/getip
protocol=namecheap
server=dynamicdns.park-your-domain.com
login=dummy-domain.tld
password=''
@
*
Get IP info:
sudo ddclient -query
Restart service:
sudo service ddclient restart
References: