Results
% dig a robots.txt
; <<>> DiG 9.5.1-P3 <<>> a robots.txt
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 45076
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;robots.txt. IN A
;; AUTHORITY SECTION:
. 10800 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2010090200 1800 900 604800 86400
;; Query time: 197 msec
;; SERVER: 172.16.0.23#53(172.16.0.23)
;; WHEN: Thu Sep 2 12:00:17 2010
;; MSG SIZE rcvd: 103