Help with unresolvable domain (subdomain, actually)

[Mark Andrews]

Ring Cisco and complain that their nameservers are broken for the
zone.

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 13389
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;tools.cisco.com.		IN	A

;; Query time: 204 msec
;; SERVER: 72.163.4.28#53(rcdn9-14p-dcz05n-gss1.cisco.com)
;; WHEN: Wed Mar  2 08:23:59 2011
;; MSG SIZE  rcvd: 33

-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org