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