ccTLD/bsについて、ここに記述してください。

$ dnsq ns bs a.root-servers.net 

2 bs:
147 bytes, 1+0+3+3 records, response, noerror
query: 2 bs
authority: bs 172800 NS dns.nic.bs
authority: bs 172800 NS upr1.upr.clu.edu
authority: bs 172800 NS anyns.pch.net
additional: dns.nic.bs 172800 A 206.48.3.168
additional: upr1.upr.clu.edu 172800 A 136.145.1.4
additional: anyns.pch.net 172800 A 204.61.216.4

$ dnsq ns nic.bs dns.nic.bs 

2 nic.bs:
58 bytes, 1+1+0+1 records, response, authoritative, noerror
query: 2 nic.bs
answer: nic.bs 86400 NS dns.nic.bs
additional: dns.nic.bs 86400 A 206.48.3.168