stackoverflow 被墙了？

我这里是北京联通线路，翻墙访问正常。

traceroute to stackoverflow.com (64.34.119.12), 64 hops max, 52 byte packets
1 192.168.1.1 3.391 ms 0.846 ms 0.827 ms
2 118.199.64.1 5.745 ms 5.976 ms 4.387 ms
3 124.205.97.42 4.657 ms 5.207 ms 3.774 ms
4 124.205.98.225 4.636 ms 4.410 ms 5.890 ms
5 218.241.240.153 5.177 ms 5.907 ms 5.379 ms
6 202.99.1.217 9.853 ms 13.910 ms 7.707 ms
7 * * *
8 * * *