DNS/TCP/twitter.comについて、ここに記述してください。

$ dig a twitter.com

; <<>> DiG 9.7.1-P2 <<>> a twitter.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32137
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 4, ADDITIONAL: 0

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

;; ANSWER SECTION:
twitter.com.            30      IN      A       199.59.148.10
twitter.com.            30      IN      A       199.59.149.230
twitter.com.            30      IN      A       199.59.149.198

;; AUTHORITY SECTION:
twitter.com.            86400   IN      NS      ns4.p34.dynect.net.
twitter.com.            86400   IN      NS      ns3.p34.dynect.net.
twitter.com.            86400   IN      NS      ns1.p34.dynect.net.
twitter.com.            86400   IN      NS      ns2.p34.dynect.net.

;; Query time: 183 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Jun  8 07:20:52 2011
;; MSG SIZE  rcvd: 163

$ dig any twitter.com --- TCP ---

;; Truncated, retrying in TCP mode.

; <<>> DiG 9.7.1-P2 <<>> any twitter.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43087
;; flags: qr rd ra; QUERY: 1, ANSWER: 19, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;twitter.com.                   IN      ANY

;; ANSWER SECTION:
twitter.com.            30      IN      SOA     ns1.p26.dynect.net. zone-admin.dyndns.com. 2007110406 3600 600 604800 60
twitter.com.            600     IN      MX      20 alt2.aspmx.l.google.com.
twitter.com.            600     IN      MX      30 ASPMX2.GOOGLEMAIL.com.
twitter.com.            600     IN      MX      30 ASPMX3.GOOGLEMAIL.com.
twitter.com.            600     IN      MX      10 aspmx.l.google.com.
twitter.com.            600     IN      MX      20 alt1.aspmx.l.google.com.
twitter.com.            30      IN      A       199.59.148.82
twitter.com.            30      IN      A       199.59.149.198
twitter.com.            30      IN      A       199.59.149.203
twitter.com.            30      IN      A       199.59.149.230
twitter.com.            30      IN      A       199.59.149.235
twitter.com.            30      IN      A       199.59.148.10
twitter.com.            30      IN      A       199.59.148.14
twitter.com.            30      IN      A       199.59.148.81
twitter.com.            600     IN      TXT     "v=spf1 ip4:199.16.156.0/22 ip4:199.59.148.0/22 ip4:128.121.145.168 ip4:128.121.146.128/27 mx ptr a:postmaster.twitter.com a:ham-cannon.twitter.com mx:one.textdrive.com include:cmail1.com include:aspmx.googlemail.com include:support.zendesk.com -all"
twitter.com.            86400   IN      NS      ns3.p34.dynect.net.
twitter.com.            86400   IN      NS      ns4.p34.dynect.net.
twitter.com.            86400   IN      NS      ns2.p34.dynect.net.
twitter.com.            86400   IN      NS      ns1.p34.dynect.net.

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Jun  8 07:21:01 2011
;; MSG SIZE  rcvd: 696