感谢大家，可能确实是中科大把我 ip 封了，现在又可以了。。

@fredcc 好吧，我访问他们官网能访问😥

@fredcc 这块我不太懂，完整的 traceroute 是这样的：
```
❯ traceroute test.ustc.edu.cn
traceroute to test.ustc.edu.cn (202.38.64.43), 64 hops max, 52 byte packets
1 openwrt (192.168.50.1) 44.702 ms 1.509 ms *
2 * 123.113.24.1 (123.113.24.1) 4.010 ms 7.528 ms
3 61.48.26.201 (61.48.26.201) 5.902 ms 5.834 ms 6.004 ms
4 * 123.126.0.233 (123.126.0.233) 10.249 ms
202.96.12.53 (202.96.12.53) 6.869 ms
5 219.158.5.130 (219.158.5.130) 10.080 ms
219.158.103.70 (219.158.103.70) 5.435 ms
219.158.22.38 (219.158.22.38) 11.926 ms
6 219.158.39.54 (219.158.39.54) 10.866 ms 8.739 ms 7.784 ms
7 101.4.118.29 (101.4.118.29) 6.320 ms 9.814 ms 8.548 ms
8 101.4.115.250 (101.4.115.250) 7.756 ms 6.670 ms
101.4.115.146 (101.4.115.146) 15.780 ms
9 101.4.112.66 (101.4.112.66) 23.902 ms 23.113 ms 22.309 ms
10 101.4.118.214 (101.4.118.214) 28.292 ms 27.816 ms 24.113 ms
11 101.4.112.62 (101.4.112.62) 32.772 ms 41.195 ms 31.677 ms
12 101.4.115.186 (101.4.115.186) 33.013 ms 37.781 ms 34.178 ms
13 101.4.115.14 (101.4.115.14) 34.110 ms 31.113 ms 29.908 ms
14 210.45.224.60 (210.45.224.60) 31.126 ms 30.197 ms 30.614 ms
15 * * *
16 * * *
17 * * *
18 * * *
19 * * *
20 * * *
21 * * *
22 * * *
```
那这么说还是 dns 问题吗。。。