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Re: Class C reverse delegation

From: Len Conrad
Date: Wednesday, March 13, 2002
Time: 10:23:15 am

Here=B4s the difference between your Classless delegation and my Classful=
l=20
Class C delegation:

> dig -x 212.73.210.0 ns

; <<>> DiG 8.3 <<>> -x ns
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 4
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUERY SECTION:
;; 0.210.73.212.in-addr.arpa, type =3D NS, class =3D IN

;; AUTHORITY SECTION:
210.73.212.in-addr.arpa. 2h8m36s IN SOA ns1.meiway.com.=20
ns-admin.meiway.com. (
2001103101 ; serial
3H ; refresh
1H ; retry
1w2d8h ; expiry
1D ) ; minimum

The authority for .0 network address is with our NS.

and now yours:

> dig -x 64.80.175.0

; <<>> DiG 8.3 <<>> -x
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 4
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUERY SECTION:
;; 0.175.80.64.in-addr.arpa, type =3D ANY, class =3D IN

;; AUTHORITY SECTION:
175.80.64.in-addr.arpa. 1D IN SOA ns1.paetec.net. dns.paetec.net. (
2002031200 ; serial
8H ; refresh
4H ; retry
1W ; expiry
1D ) ; minimum

Len


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