# High latency when accessing NRT(jp) region from west-jp

**URL:** <https://community.fly.io/t/high-latency-when-accessing-nrt-jp-region-from-west-jp/16201>\
**Category:** General\
**Tags:** login-only\
**Created:** [October 31, 2023, 3:46pm UTC](https://community.fly.io/t/high-latency-when-accessing-nrt-jp-region-from-west-jp/16201 "2023-10-31T15:46:28Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![isoppp](https://sea1.discourse-cdn.com/fly1/user_avatar/community.fly.io/isoppp/32/16040_2.png) [@isoppp](https://community.fly.io/u/isoppp)\
**Post date:** [October 31, 2023, 3:46pm UTC](https://community.fly.io/t/high-latency-when-accessing-nrt-jp-region-from-west-jp/16201/1 "2023-10-31T15:46:28Z")

</div>

When accessing servers in the NRT region from the western Japan, it seems that the connection is being routed through some edge server in the US.

This is causing the response time of the server to exceed 200ms.  
I’ve confirmed that the response time drops to below 50ms when using a free VPN in Japan.  
Therefore it would be an issue with the routing from my ISP.

I have attached a traceroute result.  
I would appreciate any hints or solutions to address this problem.

```auto
$ traceroute 66.241.124.62

 1 192.168.0.1 (192.168.0.1) 1.143 ms 0.574 ms 0.463 ms
 2 oha-mx480-bbbas05.qtnet.ad.jp (218.40.227.156) 1.645 ms 1.915 ms 1.915 ms
 3 211.132.104.33 (211.132.104.33) 1.743 ms
    211.132.104.37 (211.132.104.37) 2.398 ms 2.617 ms
 4 61.203.192.249 (61.203.192.249) 2.650 ms
    61.203.192.245 (61.203.192.245) 1.756 ms
    61.203.192.241 (61.203.192.241) 2.413 ms
 5 61.203.193.126 (61.203.193.126) 17.469 ms
    61.203.193.122 (61.203.193.122) 17.192 ms
    61.203.193.126 (61.203.193.126) 17.356 ms
 6 * * *
 7 * * *
 8 44.18.225.104.ptr.anycast.net (104.225.18.44) 129.732 ms 128.889 ms 128.948 ms
 ...

```

---

<div class="post-metadata">

**Author:** ![zifnab](https://sea1.discourse-cdn.com/fly1/user_avatar/community.fly.io/zifnab/32/15832_2.png) [@zifnab](https://community.fly.io/u/zifnab)\
**Post date:** [November 1, 2023, 6:18pm UTC](https://community.fly.io/t/high-latency-when-accessing-nrt-jp-region-from-west-jp/16201/2 "2023-11-01T18:18:24Z")

</div>

Hi!

Could you dump a full traceroute for me? `mtr --report 66.241.124.62` should be all I need to get an answer here. Thanks!

---

<div class="post-metadata">

**Author:** ![isoppp](https://sea1.discourse-cdn.com/fly1/user_avatar/community.fly.io/isoppp/32/16040_2.png) [@isoppp](https://community.fly.io/u/isoppp)\
**Post date:** [November 2, 2023, 1:48am UTC](https://community.fly.io/t/high-latency-when-accessing-nrt-jp-region-from-west-jp/16201/3 "2023-11-02T01:48:25Z")

</div>

Hi, thank you for the quick response!

This is the `mtr --report 66.241.124.62` result.

```auto
HOST: mask------------------.local Loss% Snt Last Avg Best Wrst StDev
  1.|-- 192.168.0.1 0.0% 10 1.2 1.0 0.8 1.2 0.1
  2.|-- oha-mx480-bbbas05.qtnet.a 0.0% 10 3.5 5.6 2.1 14.1 4.1
  3.|-- 211.132.104.33 0.0% 10 2.5 2.7 2.2 4.5 0.7
  4.|-- 61.203.192.241 0.0% 10 2.8 2.9 2.4 3.4 0.3
  5.|-- 61.203.193.122 0.0% 10 24.0 18.8 17.5 24.0 2.1
  6.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
  7.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
  8.|-- 44.18.225.104.ptr.anycast 0.0% 10 129.0 129.2 128.5 131.5 0.9
  9.|-- 66.241.124.62 0.0% 10 128.5 128.4 128.0 128.8 0.2

```

I’m not familiar with network stuff, so please let me know if you need additional information.

Thank you!

---

<div class="post-metadata">

**Author:** ![zifnab](https://sea1.discourse-cdn.com/fly1/user_avatar/community.fly.io/zifnab/32/15832_2.png) [@zifnab](https://community.fly.io/u/zifnab)\
**Post date:** [November 4, 2023, 12:06am UTC](https://community.fly.io/t/high-latency-when-accessing-nrt-jp-region-from-west-jp/16201/4 "2023-11-04T00:06:39Z")

</div>

Thanks - I reached out to our network people, the tl;dr is there’s some routing issues on your ISP’s side (they’re preferring routes to lax over nrt), they’re reaching out to try and get it fixed.

---

<div class="post-metadata">

**Author:** ![isoppp](https://sea1.discourse-cdn.com/fly1/user_avatar/community.fly.io/isoppp/32/16040_2.png) [@isoppp](https://community.fly.io/u/isoppp)\
**Post date:** [November 4, 2023, 12:46am UTC](https://community.fly.io/t/high-latency-when-accessing-nrt-jp-region-from-west-jp/16201/5 "2023-11-04T00:46:43Z")

</div>

I see, thank you for looking into it.🙇‍♂️  
I hope our ISP will take care of it.

---

<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/fly1/original/3X/6/e/6e8955d00cb218e186ebbe3a6ab06fefdce15290.svg) [@system](https://community.fly.io/u/system)\
**Post date:** [November 11, 2023, 12:47am UTC](https://community.fly.io/t/high-latency-when-accessing-nrt-jp-region-from-west-jp/16201/6 "2023-11-11T00:47:42Z")

</div>

This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.
