watchNS/ribbon.ne.jp/kddi.ne.jpについて、ここに記述してください。
返事がおかしかったリゾルバーはcdns01.kddi.ne.jpだとのことです。 https://twitter.com/bbbbbo_n/status/678046448785612801
$ dnsqr a cdns01.kddi.ne.jp
1 cdns01.kddi.ne.jp: 51 bytes, 1+1+0+0 records, response, noerror query: 1 cdns01.kddi.ne.jp answer: cdns01.kddi.ne.jp 2696 A 106.187.2.33
ribbon.to が指していた先は195.22.126.213だったようです。
$ dig @ns1.clnx2015.com ribbon.to
; <<>> DiG 9.9.5-3ubuntu0.6-Ubuntu <<>> @ns1.clnx2015.com ribbon.to ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58402 ;; flags: qr aa rd; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1680 ;; QUESTION SECTION: ;ribbon.to. IN A ;; ANSWER SECTION: ww9.ribbon.to. 604800 IN A 166.78.101.108 www.ribbon.to. 604800 IN A 195.22.126.213 *.ribbon.to. 604800 IN A 195.22.126.213 ribbon.to. 604800 IN A 195.22.126.213 ;; Query time: 301 msec ;; SERVER: 195.22.126.212#53(195.22.126.212) ;; WHEN: Sat Dec 19 13:32:04 JST 2015 ;; MSG SIZE rcvd: 112
$ dnsq a ns1.clnx2015.com @a.gtld-servers.net
1 ns1.clnx2015.com: input/output error tmaeno@tm:~$ dnsq a ns1.clnx2015.com a.gtld-servers.net 1 ns1.clnx2015.com: 166 bytes, 1+0+4+4 records, response, noerror query: 1 ns1.clnx2015.com authority: clnx2015.com 172800 NS ns1.clnx2015.com authority: clnx2015.com 172800 NS ns2.clnx2015.com authority: clnx2015.com 172800 NS ns3.clnx2015.com authority: clnx2015.com 172800 NS ns4.clnx2015.com additional: ns1.clnx2015.com 172800 A 195.22.126.212 additional: ns2.clnx2015.com 172800 A 195.22.126.213 additional: ns3.clnx2015.com 172800 A 195.22.126.214 additional: ns4.clnx2015.com 172800 A 195.22.126.215
$ dnsq a ns1.clnx2015.com ns1.clnx2015.com
1 ns1.clnx2015.com: 108 bytes, 1+4+0+0 records, response, authoritative, noerror query: 1 ns1.clnx2015.com answer: ns1.clnx2015.com 604800 A 195.22.126.212 answer: ww9.clnx2015.com 604800 A 166.78.101.108 answer: \052.clnx2015.com 604800 A 195.22.126.212 answer: www.clnx2015.com 604800 A 195.22.126.212
$ dnsq a qmail.jp ns1.clnx2015.com
1 qmail.jp: 100 bytes, 1+4+0+0 records, response, authoritative, noerror query: 1 qmail.jp answer: ww9.qmail.jp 604800 A 166.78.101.108 answer: www.qmail.jp 604800 A 195.22.126.213 answer: \052.qmail.jp 604800 A 195.22.126.213 answer: qmail.jp 604800 A 195.22.126.213