DNS Management



I just checked my Domain DNS Management and notice on my Records an IP address ( A   @   (IP Address)  600 seconds) not sure what this IP address certain its not my Private/Public address I have only 1 static IP address that I own that what my ISP provider told me. I tested my domain and its not working its just pauses for very long time and then it gives up.
I have another Domain with "No-IP" and that one works fast.