domainmonger.com with wildcard NS?

[Rick Ernst <erond () legendz com>]

This was brought to my attention by a friend.  It looks like
ns1.domainmonger.com and ns2.domainmonger.com are doing wildcard A records for
all zones, including those that already exist.

If you go to their site and try to register a domain, it properly shows if the
domain exists or not.

I'm trying to figure out what the reasoning is behind this.

My friend alo pointed out this CERT alert, but I'm not sure how it relates:
  http://www.kb.cert.org/vuls/id/109475


Rick



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; <<>> DiG 9.2.3rc4 <<>> @ns1.domainmonger.com www.esdfsadfsdftreet.com a
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 50340
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0

;; QUESTION SECTION:
;www.esdfsadfsdftreet.com.      IN      A

;; ANSWER SECTION:
www.esdfsadfsdftreet.com. 1200  IN      A       216.52.102.86

;; AUTHORITY SECTION:
com.                    1200    IN      NS      ns1.domainmonger.com.
com.                    1200    IN      NS      ns2.domainmonger.com.

;; Query time: 37 msec
;; SERVER: 216.98.150.33#53(ns1.domainmonger.com)
;; WHEN: Tue Oct 14 09:59:24 2003
;; MSG SIZE  rcvd: 107

-----

; <<>> DiG 9.2.3rc4 <<>> @ns2.domainmonger.com www.legendz.com a
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40110
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0

;; QUESTION SECTION:
;www.legendz.com.               IN      A

;; ANSWER SECTION:
www.legendz.com.        1200    IN      A       216.52.102.86

;; AUTHORITY SECTION:
com.                    1200    IN      NS      ns1.domainmonger.com.
com.                    1200    IN      NS      ns2.domainmonger.com.

;; Query time: 91 msec
;; SERVER: 216.122.4.81#53(ns2.domainmonger.com)
;; WHEN: Tue Oct 14 10:01:28 2003
;; MSG SIZE  rcvd: 98