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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: in-addr.arpa?
On 06/14/2000 at 08:04:34 ZE2, Hank Nussbacher <[email protected]> wrote: > Why would 216.136.44.104 do something like this? > 14 ip104.44.136.216.in-addr.arpa (216.136.44.104) [AS 4323] 404 msec 400 Do you mean why is its name shown as ip104.44.136.216.in-addr.arpa? It is a strange name, but it simply means that the 44.136.216.in-addr.arpa zone has a record like this: 104.44.136.216.in-addr.arpa. PTR ip104.44.136.216.in-addr.arpa. Doing a whois on 216.136.44, we find: Internet Connect, Inc. (NETBLK-INCNET-BLK-4) INCNET-BLK-4 216.136.0.0 - 216.136.127.255 Time Warner Telecom, Inc. (NETBLK-TWTC-BLOCK-01) TWTC-BLOCK-01 216.136.32.0 - 216.136.63.255 Andrew F. Capoccia Law Centers (NETBLK-TWTC-ALBY-C-CAPOCCI-0) TWTC-ALBY-C-CAPOCCI-0 216.136.44.0 - 216.136.44.15 Farm Family Casualty Ins. (NETBLK-TWTC-ALBY-C-FARMFAM-0) TWTC-ALBY-C-FARMFAM-0 216.136.44.16 - 216.136.44.31 Global Spec (NETBLK-TWTC-ALBY-C-GLBLSPC-0) TWTC-ALBY-C-GLBLSPC-0 216.136.44.32 - 216.136.44.47 James McGuinness & Assoc (NETBLK-TWTC-ALBY-C-JMCGNSS-0) TWTC-ALBY-C-JMCGNSS-0 216.136.44.48 - 216.136.44.63 Learn Linc (NETBLK-TWTC-ALBY-C-LRNLINC-0) TWTC-ALBY-C-LRNLINC-0 216.136.44.96 - 216.136.44.127 LaCorte Companies Inc (NETBLK-TWTC-ALBY-C-LACORTE-0) TWTC-ALBY-C-LACORTE-0 216.136.44.128 - 216.136.44.159 New Horizons Computer Learning (NETBLK-TWTC-ALBY-C-NEWHORZ-0) TWTC-ALBY-C-NEWHORZ-0 216.136.44.168 - 216.136.44.175 Rupprecht %26 Patashnick Co. Inc. (NETBLK-TWTC-ALBY-C-RUPPPAT-0) TWTC-ALBY-C-RUPPPAT-0 216.136.44.176 - 216.136.44.191 Phelan%2C Burke %26 Scolamiero (NETBLK-TWTC-ALBY-C-PBSLAW--0) TWTC-ALBY-C-PBSLAW--0 216.136.44.192 - 216.136.44.199 and conclude that Time Warnet Telecom has subdivided their /19 into a bunch of /28s (or smaller). Rather than hassle with doing classless in-addr.arpa delegation (rfc2317?) they've just used placeholder nanes for all the addresses. Tony Rall
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