TLD/bizについて、ここに記述してください。
$ dnsq ns biz a.root-servers.net
2 biz: 302 bytes, 1+0+6+9 records, response, noerror query: 2 biz authority: biz 172800 NS k.gtld.biz authority: biz 172800 NS f.gtld.biz authority: biz 172800 NS e.gtld.biz authority: biz 172800 NS c.gtld.biz authority: biz 172800 NS b.gtld.biz authority: biz 172800 NS a.gtld.biz additional: k.gtld.biz 172800 A 156.154.128.65 additional: k.gtld.biz 172800 28 \040\001\005\003\3429\000\000\000\000\000\000\000\003\000\002 additional: f.gtld.biz 172800 A 209.173.58.66 additional: f.gtld.biz 172800 28 \040\001\005\0006\202\000\000\000\000\000\000\000\000\000\022 additional: e.gtld.biz 172800 A 156.154.126.65 additional: c.gtld.biz 172800 A 156.154.127.65 additional: b.gtld.biz 172800 A 156.154.125.65 additional: a.gtld.biz 172800 A 156.154.124.65 additional: a.gtld.biz 172800 28 \040\001\005\003{\273\377\377\377\377\377\377\377\377\377~
ここのadditionalはglueである。
$ dnsq ns biz 156.154.124.65
2 biz: 302 bytes, 1+6+0+9 records, response, authoritative, noerror query: 2 biz answer: biz 518400 NS k.gtld.biz answer: biz 518400 NS f.gtld.biz answer: biz 518400 NS c.gtld.biz answer: biz 518400 NS b.gtld.biz answer: biz 518400 NS e.gtld.biz answer: biz 518400 NS a.gtld.biz additional: a.gtld.biz 518400 A 156.154.124.65 additional: a.gtld.biz 518400 28 \040\001\005\003{\273\377\377\377\377\377\377\377\377\377~ additional: b.gtld.biz 518400 A 156.154.125.65 additional: c.gtld.biz 518400 A 156.154.127.65 additional: e.gtld.biz 518400 A 156.154.126.65 additional: f.gtld.biz 518400 A 209.173.58.66 additional: f.gtld.biz 518400 28 \040\001\005\0006\202\000\000\000\000\000\000\000\000\000\022 additional: k.gtld.biz 518400 A 156.154.128.65 additional: k.gtld.biz 518400 28 \040\001\005\003\3429\000\000\000\000\000\000\000\003\000\002
gtldサブドメインはどうなっているか。同居だ。
$ dnsq ns gtld.biz 156.154.124.65
2 gtld.biz: 302 bytes, 1+6+0+9 records, response, authoritative, noerror query: 2 gtld.biz answer: gtld.biz 7200 NS e.gtld.biz answer: gtld.biz 7200 NS f.gtld.biz answer: gtld.biz 7200 NS b.gtld.biz answer: gtld.biz 7200 NS a.gtld.biz answer: gtld.biz 7200 NS c.gtld.biz answer: gtld.biz 7200 NS k.gtld.biz additional: a.gtld.biz 518400 A 156.154.124.65 additional: a.gtld.biz 518400 28 \040\001\005\003{\273\377\377\377\377\377\377\377\377\377~ additional: b.gtld.biz 518400 A 156.154.125.65 additional: c.gtld.biz 518400 A 156.154.127.65 additional: e.gtld.biz 518400 A 156.154.126.65 additional: f.gtld.biz 518400 A 209.173.58.66 additional: f.gtld.biz 518400 28 \040\001\005\0006\202\000\000\000\000\000\000\000\000\000\022 additional: k.gtld.biz 518400 A 156.154.128.65 additional: k.gtld.biz 518400 28 \040\001\005\003\3429\000\000\000\000\000\000\000\003\000\002