DNS/watchNS/vavrusa.comについて、ここに記述してください。
$ kdig -t a seqalpha.vavrusa.com @107.170.240.33
;; ->>HEADER<<- opcode: QUERY; status: NOERROR; id: 54751 ;; Flags: qr aa rd; QUERY: 1; ANSWER: 2; AUTHORITY: 2; ADDITIONAL: 4 ;; QUESTION SECTION: ;; seqalpha.vavrusa.com. IN A ;; ANSWER SECTION: seqalpha.vavrusa.com. 3600 IN CNAME www.vavrusa.com. www.vavrusa.com. 3600 IN A 95.85.40.151 ;; AUTHORITY SECTION: vavrusa.com. 3600 IN NS ns1.vavrusa.com. vavrusa.com. 3600 IN NS ns2.vavrusa.com. ;; ADDITIONAL SECTION: ns1.vavrusa.com. 3600 IN A 95.85.40.151 ns1.vavrusa.com. 3600 IN AAAA 2a03:b0c0:0:1010::c6:b001 ns2.vavrusa.com. 3600 IN A 107.170.240.33 ns2.vavrusa.com. 3600 IN AAAA 2604:a880:1:20::21b:e001 ;; Received 200 B ;; Time 2015-10-20 13:25:23 JST ;; From 107.170.240.33@53(UDP) in 161.9 ms
ns1.vavrusa.com はKnot DNS authoritative server か。
$ kdig -t a seqalpha.vavrusa.com @95.85.40.151
;; ->>HEADER<<- opcode: QUERY; status: NOERROR; id: 28520 ;; Flags: qr aa rd; QUERY: 1; ANSWER: 2; AUTHORITY: 0; ADDITIONAL: 0 ;; QUESTION SECTION: ;; seqalpha.vavrusa.com. IN A ;; ANSWER SECTION: seqalpha.vavrusa.com. 3600 IN CNAME www.vavrusa.com. www.vavrusa.com. 3600 IN A 95.85.40.151 ;; Received 76 B ;; Time 2015-10-20 13:28:00 JST ;; From 95.85.40.151@53(UDP) in 290.0 ms
-- ToshinoriMaeno 2015-10-20 04:27:47