2host.com nameserver = ns1.2host.com.
2host.com nameserver = ns2.2host.com.
ns1.2host.com internet address = 216.59.3.249
ns2.2host.com internet address = 216.59.3.250
178.18.16.0/23 和 216.59.3.0/24 都不通:
traceroute to 216.59.3.249 (216.59.3.249), 30 hops max, 60 byte packets
5 netriplex.com.any2ix.coresite.com (206.223.143.193) 1.432 ms 1.453 ms 1.480 ms
6 te-2-0.rtr1.lax1.netriplex.com (67.23.161.141) 85.880 ms 86.212 ms 86.199 ms
7 te-5-4.rtr2.avl1.netriplex.com (67.23.161.134) 86.249 ms 86.367 ms 86.600 ms
8 * * *
9 * * *
10 * *