[root@localhost ~]# dig _ldap._tcp.pdc._msdcs. adsroot.itcs.umich.edu
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 6817
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;_ldap._tcp.pdc._msdcs.         IN      A

;; AUTHORITY SECTION:
.                       10800   IN      SOA     A.ROOT-SERVERS.NET. NSTLD.VERISIGN-GRS.COM. 2006101200 1800 900 604800 86400

;; Query time: 18 msec
;; SERVER: 141.211.211.180#53(141.211.211.180)
;; WHEN: Thu Oct 12 09:51:16 2006
;; MSG SIZE  rcvd: 114


; <<>> DiG 9.3.2 <<>> _ldap._tcp.pdc._msdcs. adsroot.itcs.umich.edu
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16114
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;adsroot.itcs.umich.edu.                IN      A

;; ANSWER SECTION:
adsroot.itcs.umich.edu. 600     IN      A       141.211.27.149
adsroot.itcs.umich.edu. 600     IN      A       141.211.125.23
adsroot.itcs.umich.edu. 600     IN      A       141.211.3.111
adsroot.itcs.umich.edu. 600     IN      A       141.211.3.114

;; AUTHORITY SECTION:
adsroot.itcs.umich.edu. 22103   IN      NS      dc03.adsroot.itcs.umich.edu.
adsroot.itcs.umich.edu. 22103   IN      NS      dc01.adsroot.itcs.umich.edu.

;; ADDITIONAL SECTION:
dc01.adsroot.itcs.umich.edu. 616 IN     A       141.211.3.111
dc03.adsroot.itcs.umich.edu. 636 IN     A       141.211.125.23

;; Query time: 2 msec
;; SERVER: 141.211.211.180#53(141.211.211.180)
;; WHEN: Thu Oct 12 09:51:16 2006
;; MSG SIZE  rcvd: 174