TRACE Route 是通的:
C:\WINDOWS\system32>tracert codeforces.com
Tracing route to codeforces.com [213.248.110.126]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms 192.168.61.1
2 16 ms 18 ms 16 ms *
3 10 ms 17 ms 17 ms 24.156.158.73
4 18 ms 17 ms 21 ms 69.63.248.97
5 25 ms 20 ms 29 ms 209.148.233.130
6 27 ms 38 ms 42 ms ae58.edge2.NewYork6.Level3.net [4.30.180.121]
7 29 ms 33 ms 29 ms nyk-b6-link.ip.twelve99.net [62.115.33.116]
8 28 ms 30 ms 29 ms nyk-bb2-link.ip.twelve99.net [62.115.135.132]
9 109 ms 118 ms 123 ms kbn-bb2-link.ip.twelve99.net [80.91.254.90]
10 116 ms 119 ms 119 ms s-bb2-link.ip.twelve99.net [62.115.139.172]
11 134 ms 129 ms 137 ms sap-b4-link.ip.twelve99.net [62.115.115.247]
12 * * * Request timed out.
13 * * * Request timed out.
14 * * * Request timed out.
15 124 ms 126 ms 136 ms 213-248-110-126.teliacarrier-cust.com [213.248.110.126]
Trace complete.
C:\WINDOWS\system32>