Strange NSLOOKUP behavior

[Barry Margolin]

In article <9m69fl$ei4 at pub3.rc.vix.com>,
Charles Bodley <bodley at tflogic.com> wrote:
>
>As long as it's not my mistake :). Out of curiosity how did you find this
>out? My ARIN lookup was not very informative.
>http://www.arin.net/cgi-bin/whois.pl?queryinput=216.68.75.255

That lookup should show you this:

Fuse Internet Access (NETBLK-FUSE-NET-BLK-1) FUSE-NET-BLK-1
						   216.68.0.0 - 216.68.255.255
SuperNet of Ohio (NETBLK-FUSE-216-68-72-0) FUSE-216-68-72-0
						   216.68.72.0 - 216.68.75.255

You then do another query for FUSE-NET-BLK-1 and you'll see:

   Domain System inverse mapping provided by:

   NS1.FUSE.NET			216.68.1.100
   NS2.FUSE.NET			216.68.2.100

Then you query these servers and you'll see that they don't have an SOA
record for the domain and they're not authoritative for it:

% dig -x 216.68 any @ns2.fuse.net +norec

; <<>> DiG 8.3 <<>> -x any @ns2.fuse.net +norec 
; (1 server found)
;; res options: init defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 51091
;; flags: qr ra; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2
;; QUERY SECTION:
;;	68.216.in-addr.arpa, type = ANY, class = IN

;; AUTHORITY SECTION:
68.216.in-addr.arpa.	23h59m4s IN NS	NS2.FUSE.NET.
68.216.in-addr.arpa.	23h59m4s IN NS	NS1.FUSE.NET.

;; ADDITIONAL SECTION:
NS1.FUSE.NET.		1D IN A		216.68.1.100
NS2.FUSE.NET.		1D IN A		216.68.2.100

-- 
Barry Margolin, barmar at genuity.net
Genuity, Woburn, MA
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