If you your own domain, you can redirect it or a subdomain to your game server IP - meaning you can use my.mcserver.com to connect to your server instead of using the IP address.
If you do not have a domain name you can order one here: https://clients.fragnet.net/cart.php?a=add&pid=50219
Follow these simple steps:
1. Log in to your Domain Manager (Your Domain registrars selfservice portal)
2. Find the DNS Manager
3. Choose to create an A record
4. Set the A record by choosing a subdomain name and point it to your game servers' IP address ex. my. (mcserver.com being the domain) and IP-address 111.222.333.444 (your game server IP)
5. Please allow up to 24 hours for the DNS record to propagate.
At this point you can test if it works by pinging my.mcserver.com - you should receive a response with your game server IP.
Note that if you do not have the port 25565 you will have to type in your server's port after your domain name.