$ dig -t mx gnusocial.jp
; <<>> DiG 9.18.1-1ubuntu1.3-Ubuntu <<>> -t mx gnusocial.jp ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 14695 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;gnusocial.jp. IN MX ;; ANSWER SECTION: gnusocial.jp. 3600 IN MX 0 163.44.176.16.
1. whois