dig -x 32.1.4.248

; <<>> DiG 9.4.1-P1 <<>> -x 32.1.4.248
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 32735
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;248.4.1.32.in-addr.arpa.       IN      PTR

;; AUTHORITY SECTION:
1.32.in-addr.arpa.      600     IN      SOA     ns.uk.prserv.net. rm-dnstechteam.ems.att.com. 2007072701 28800 7200 604800 86400

;; Query time: 111 msec
;; SERVER: 192.168.1.1#53(192.168.1.1)
;; WHEN: Tue Nov 13 20:36:13 2007
;; MSG SIZE  rcvd: 119