$ dig -tA twitter.com @208.67.222.222 ; <<>> DiG 9.8.3-P1 <<>> -tA twitter.com @208.67.222.222 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63973 ;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;twitter.com. IN A ;; ANSWER SECTION: twitter.com. 0 IN A 199.59.148.82 twitter.com. 0 IN A 199.59.149.198 twitter.com. 0 IN A 199.59.148.10 twitter.com. 0 IN A 199.59.150.7 ;; Query time: 14 msec ;; SERVER: 208.67.222.222#53(208.67.222.222) ;; WHEN: Fri Oct 21 11:53:40 2016 ;; MSG SIZE rcvd: 93 $ dig -tA twitter.com @8.8.8.8 ; <<>> DiG 9.8.3-P1 <<>> -tA twitter.com @8.8.8.8 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 47295 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;twitter.com. IN A ;; Query time: 13 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Fri Oct 21 11:53:47 2016 ;; MSG SIZE rcvd: 29