watchNS/utf-8.jpについて、ここに記述してください。
%dnsq ns utf-8.jp
2 utf-8.jp: 72 bytes, 1+0+2+0 records, response, noerror query: 2 utf-8.jp authority: utf-8.jp 86400 NS ns2.s-lines.net authority: utf-8.jp 86400 NS ns.s-lines.net
$ dnsq a ns.s-lines.net 116.91.122.113
1 ns.s-lines.net: 152 bytes, 1+1+2+3 records, response, authoritative, noerror query: 1 ns.s-lines.net answer: ns.s-lines.net 600 A 116.91.122.113 authority: s-lines.net 600 NS ns.s-lines.net authority: s-lines.net 600 NS ns2.s-lines.net additional: ns.s-lines.net 600 28 \040\001\003\340\014\222\022\000\000\000\000\000\000S\000\021 additional: ns2.s-lines.net 600 A 182.48.42.230 additional: ns2.s-lines.net 600 28 \040\001\003\340\014\222\000\000\000\000\000\000\000S\0020
NSレコードのTTLが600とは、DNS設定が分かっていない口らしい。
$ dnsq a utf-8.jp ns.s-lines.net
1 utf-8.jp: 176 bytes, 1+1+2+4 records, response, authoritative, noerror query: 1 utf-8.jp answer: utf-8.jp 600 A 116.91.122.114 authority: utf-8.jp 600 NS ns.s-lines.net authority: utf-8.jp 600 NS ns2.s-lines.net additional: ns.s-lines.net 600 A 116.91.122.113 additional: ns.s-lines.net 600 28 \040\001\003\340\014\222\022\000\000\000\000\000\000S\000\021 additional: ns2.s-lines.net 600 A 182.48.42.230 additional: ns2.s-lines.net 600 28 \040\001\003\340\014\222\000\000\000\000\000\000\000S\0020
A の値を見ると、utf-8.jp, s-lines.net は同一の運営者か。