Response from
www.dnsstuff.com for Reverse DNS on
www.omegaowners.com:
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www.omegaowners.com is not an IP address, so I am using 217.155.56.220 (the A record for
www.omegaowners.com).
Location: United Kingdom [City: London, England]
Preparation:
The reverse DNS entry for an IP is found by reversing the IP, adding it to "in-addr.arpa", and looking up the PTR record.
So, the reverse DNS entry for 217.155.56.220 is found by looking up the PTR record for
220.56.155.217.in-addr.arpa.
All DNS requests start by asking the root servers, and they let us know what to do next.
See How Reverse DNS Lookups Work for more information.
How I am searching:
Asking d.root-servers.net for 220.56.155.217.in-addr.arpa PTR record:
d.root-servers.net says to go to ns-ext.isc.org. (zone: 217.in-addr.arpa.)
Asking ns-ext.isc.org. for 220.56.155.217.in-addr.arpa PTR record:
ns-ext.isc.org [204.152.184.64] says to go to ns1.zen.co.uk. (zone: 155.217.in-addr.arpa.)
Asking ns1.zen.co.uk. for 220.56.155.217.in-addr.arpa PTR record: Reports slcs-rh4-2.lettronics.com. [from 212.23.3.1]
Answer:
217.155.56.220 PTR record: slcs-rh4-2.lettronics.com. [TTL 86400s] [A=217.155.56.220]
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