Problem with IP Resolution

[naude]

When pinging my server IP using ping -a, it gets resolved to my ISP eg.
Pinging host81.138.111.203.in-addr.btopenworld.com [81.138.111.203] instead of my server name.
What am I doing wrong?

[SG_01]

Nothing, but you'll have to understand the DNS system to check what you're doing.

There's two different parts of the DNS, forward and backward lookup. Both are maintained in seperate databases. What you're doing there is a backwards lookup, you're resolving 81.138.111.203 to a name. There is only one name set per IP, and it's usually the service providers' name.

Now with forward lookup (looking up an ip from a name) you can have multiple names bound to one IP (and also multiple IPs for one name).

If you want to know if your name is working, you will have to ping that name, not to the IP.