NSLookup (DNS Lookup)
Esta ferramenta faz lookups e lookups reversos para servidores DNS, IP/Domínio e Dominio/IP.
NSLookup 85.13.137.6
; <<>> DiG 9.3.6-P1-RedHat-9.3.6-16.P1.el5_7.1 <<>> any 85.13.137.6
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 21545
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;85.13.137.6. IN ANY
;; AUTHORITY SECTION:
. 10800 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2012020600 1800 900 604800 86400
;; Query time: 80 msec
;; SERVER: 206.251.73.9#53(206.251.73.9)
;; WHEN: Mon Feb 6 13:11:40 2012
;; MSG SIZE rcvd: 104
