watchNS/cr.yp.toについて、ここに記述してください。

$ dnsq ns cr.yp.to a.root-servers.net

2 cr.yp.to:
268 bytes, 1+0+5+6 records, response, noerror
query: 2 cr.yp.to
authority: to 172800 NS to.cctld.authdns.ripe.net
authority: to 172800 NS ns1.iafrica.com
authority: to 172800 NS colo.to
authority: to 172800 NS tonic.to
authority: to 172800 NS auth02.ns.uu.net
additional: to.cctld.authdns.ripe.net 172800 A 193.0.9.118
additional: ns1.iafrica.com 172800 A 196.7.0.139
additional: colo.to 172800 A 216.74.32.104
additional: tonic.to 172800 A 216.74.32.100
additional: auth02.ns.uu.net 172800 A 198.6.1.82
additional: to.cctld.authdns.ripe.net 172800 28 \040\001\006|\000\340\000\000\000\000\000\000\000\000\001\030

$ dnsq ns cr.yp.to tonic.to

2 cr.yp.to:
199 bytes, 1+0+2+2 records, response, noerror
query: 2 cr.yp.to
authority: yp.to 86400 NS uz5dz39x8xk8wyq3dzn7vpt670qmvzx0zd9zg4ldwldkv6kx9ft090.ns.yp.to
authority: yp.to 86400 NS uz5hjgptn63q5qlch6xlrw63tf6vhvvu6mjwn0s31buw1lhmlk14kd.ns.yp.to
additional: uz5dz39x8xk8wyq3dzn7vpt670qmvzx0zd9zg4ldwldkv6kx9ft090.ns.yp.to 86400 A 131.155.71.143
additional: uz5hjgptn63q5qlch6xlrw63tf6vhvvu6mjwn0s31buw1lhmlk14kd.ns.yp.to 86400 A 131.193.32.142

$ dnsq ns ns.yp.to 131.155.71.143

2 ns.yp.to:
128 bytes, 1+0+1+0 records, response, authoritative, nxdomain
query: 2 ns.yp.to
authority: yp.to 2560 SOA uz5dz39x8xk8wyq3dzn7vpt670qmvzx0zd9zg4ldwldkv6kx9ft090.ns.yp.to hostmaster.yp.to 1430158874 16384 2048 1048576 2560