dig @128.193.4.20 yahoo.com

; <<>> DiG 9.3.2-P1 <<>> @128.193.4.20 yahoo.com
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 4519
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;yahoo.com.                     IN      A

;; Query time: 139 msec
;; SERVER: 128.193.4.20#53(128.193.4.20)
;; WHEN: Thu Aug 30 10:06:54 2007
;; MSG SIZE  rcvd: 27