$ dig SRV _xmpp-client._tcp.gmail.com

; <<>> DiG 9.9.1-P2 <<>> SRV _xmpp-client._tcp.gmail.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44849
;; flags: qr aa rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;_xmpp-client._tcp.gmail.com.	IN	SRV

;; Query time: 8 msec
;; SERVER: 172.16.0.1#53(172.16.0.1)
;; WHEN: Sun Aug 19 19:07:38 2012
;; MSG SIZE  rcvd: 45

------------------
$ dig SRV _xmpp-client._tcp.gmail.com

; <<>> DiG 9.9.1-P2 <<>> SRV _xmpp-client._tcp.gmail.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24197
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;_xmpp-client._tcp.gmail.com.	IN	SRV

;; ANSWER SECTION:
_xmpp-client._tcp.gmail.com. 740 IN	SRV	20 0 5222 alt1.xmpp.l.google.com.
_xmpp-client._tcp.gmail.com. 740 IN	SRV	20 0 5222 alt2.xmpp.l.google.com.
_xmpp-client._tcp.gmail.com. 740 IN	SRV	20 0 5222 alt3.xmpp.l.google.com.
_xmpp-client._tcp.gmail.com. 740 IN	SRV	20 0 5222 alt4.xmpp.l.google.com.
_xmpp-client._tcp.gmail.com. 740 IN	SRV	5 0 5222 xmpp.l.google.com.

;; Query time: 7 msec
;; SERVER: 172.16.0.1#53(172.16.0.1)
;; WHEN: Sun Aug 19 19:07:59 2012
;; MSG SIZE  rcvd: 261