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- Newsgroups: comp.protocols.tcp-ip
- Path: sparky!uunet!spool.mu.edu!uwm.edu!linac!uchinews!machine!ddsw1!karl
- From: karl@ddsw1.mcs.com (Karl Denninger)
- Subject: Re: Name Server Lookup: No. to Name?
- Summary: Strange stuff -- but it can be done
- Message-ID: <BxsL46.4w3@ddsw1.mcs.com>
- Date: Mon, 16 Nov 1992 04:43:18 GMT
- References: <1992Nov15.171533.60873@cc.usu.edu>
- Organization: Macro Computer Solutions, Inc., Chicago, IL
- Lines: 21
-
- In article <1992Nov15.171533.60873@cc.usu.edu> sl870@europa.ee.usu.edu (ullas gargi) writes:
- >Hi,
- >
- >How does one convert an internet no. (address) to an internet (canonical) name?
- >NSLOOKUP doesnt seem to have an option for it, only for the other way round of
- >direct name lookup, not the reverse lookup.
- >(I couldn't find the FAQ in case this is in there)
-
- The domain name for 128.1.2.3's "reverse lookup" is:
-
- 3.2.1.128.in-addr.arpa.
-
- That's right. Reverse the octets, and add "in-addr.arpa" to the end. Ask
- for that with record type "PTR". You'll get the name associated with the IP
- number (assuming the DNS administrator for that domain correctly set up the
- DNS system).
-
- --
- Karl Denninger (karl@ddsw1.MCS.COM, <well-connected>!ddsw1!karl)
- Data Line: [+1 312 248-0900] Anon. arch. (nuucp) 00:00-06:00 C[SD]T
- Request file: /u/public/sources/DIRECTORY/README for instructions
-