無意間發現，hinet到seednet dns(139.175.55.244)得過海出國繞一圈

>tracert dns.seed.net.tw

Tracing route to dns.seed.net.tw [139.175.55.244]
over a maximum of 30 hops:

3 36 ms 35 ms 35 ms kh-c12r11.router.hinet.net [220.128.24.146]
4 36 ms 35 ms 35 ms 220-128-24-245.HINET-IP.hinet.net [220.128.24.24
5]
5 36 ms 36 ms 35 ms r32-kh.hinet.net [220.128.24.121]
6 172 ms 172 ms 172 ms r12-pa.us.hinet.net [211.22.225.145]
7 172 ms 172 ms 176 ms r01-pa.us.hinet.net [202.39.83.18]
8 172 ms 172 ms 172 ms so-1-0-0.IG4.PAO1.ALTER.NET [63.65.131.121]
9 172 ms 173 ms 172 ms 0.so-0-3-0.XL2.PAO1.ALTER.NET [152.63.51.34]
10 173 ms 173 ms 173 ms 0.ge-3-0-0.XL4.SJC7.ALTER.NET [152.63.49.142]
11 173 ms 174 ms 173 ms 0.xe-3-1-0.BR3.SJC7.ALTER.NET [152.63.48.181]
12 189 ms 188 ms 188 ms xe-4-4.r04.snjsca04.us.bb.gin.ntt.net [129.250.8
.117]
13 188 ms 188 ms 188 ms ae-4.r20.snjsca04.us.bb.gin.ntt.net [129.250.6.1
]
14 189 ms 188 ms 189 ms ae-0.r21.snjsca04.us.bb.gin.ntt.net [129.250.2.9
7]
15 194 ms 194 ms 191 ms as-0.r21.tokyjp01.jp.bb.gin.ntt.net [129.250.5.8
2]
16 195 ms 193 ms 195 ms as-0.r21.taiptw01.tw.bb.gin.ntt.net [129.250.4.8
2]
17 194 ms 192 ms 194 ms xe-1-1-0.r20.taiptw01.tw.bb.gin.ntt.net [129.250
.3.169]
18 195 ms 194 ms 192 ms ae-0.a01.taiptw01.tw.ra.gin.ntt.net [129.250.16.
14]
19 174 ms 174 ms 174 ms 61.58.33.138
20 174 ms 171 ms 299 ms R57-38.seed.net.tw [139.175.57.38]
21 174 ms 174 ms 174 ms dns.seed.net.tw [139.175.55.244]

Trace complete.


但是試了一下前後網段都直接國內連上


>tracert 139.175.54.244

Tracing route to eagle.seed.net.tw [139.175.54.244]
over a maximum of 30 hops:

3 36 ms 35 ms 35 ms kh-c12r11.router.hinet.net [220.128.24.146]
4 41 ms 42 ms 42 ms tp-crs11.router.hinet.net [220.128.1.82]
5 41 ms 41 ms 41 ms 220-128-3-173.HINET-IP.hinet.net [220.128.3.173]

6 42 ms 41 ms 42 ms 210-242-214-129.HINET-IP.hinet.net [210.242.214.
129]
7 42 ms 42 ms 42 ms R57-150.seed.net.tw [139.175.57.150]
8 42 ms 42 ms 42 ms R57-38.seed.net.tw [139.175.57.38]
9 * * 43 ms R57-93.seed.net.tw [139.175.57.93]
10 * * * Request timed out.
11 * * * Request timed out.


>tracert 139.175.56.244

Tracing route to R56-244.seed.net.tw [139.175.56.244]
over a maximum of 30 hops:

3 36 ms 36 ms 36 ms kh-c12r12.router.hinet.net [220.128.25.150]
4 42 ms 41 ms 42 ms tp-crs11.router.hinet.net [220.128.2.206]
5 42 ms 41 ms 42 ms tp-twix17.router.hinet.net [220.128.4.241]
6 50 ms 41 ms 41 ms 210-242-214-129.HINET-IP.hinet.net [210.242.214.
129]
7 42 ms 42 ms 41 ms R57-5.seed.net.tw [139.175.57.5]
8 42 ms 42 ms 42 ms R57-93.seed.net.tw [139.175.57.93]
9 * * 42 ms R57-38.seed.net.tw [139.175.57.38]
10 * 42 ms * R57-134.seed.net.tw [139.175.57.134]
11 * * * Request timed out.


似乎只有139.175.55/24這一段會這樣？
這兩家是又有什麼故事了嗎？