Issues with Cloudfare 1.1.1.1

Noticed loading websites was VERY slow today, few checks found out that its 1.1.1.1 causing issue:

Pinging 1.1.1.1 with 32 bytes of data:
Reply from 1.1.1.1: bytes=32 time=628ms TTL=56
Reply from 1.1.1.1: bytes=32 time=877ms TTL=56
Reply from 1.1.1.1: bytes=32 time=875ms TTL=56
Reply from 1.1.1.1: bytes=32 time=788ms TTL=56

Ping statistics for 1.1.1.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 628ms, Maximum = 877ms, Average = 792ms

C:\Users\ryan_>tracert -4 1.1.1.1

Tracing route to one.one.one.one [1.1.1.1]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms RT-AX88U-60D8 [192.168.50.1]
2 2 ms 1 ms 1 ms 172.16.13.244
3 * 14 ms 14 ms 31.55.185.177
4 15 ms 14 ms 15 ms 31.55.185.176
5 14 ms 15 ms 15 ms core2-hu0-8-0-5.colindale.ukcore.bt.net [195.99.127.154]
6 16 ms 16 ms 16 ms core6-hu0-3-0-15.faraday.ukcore.bt.net [109.159.252.134]
7 16 ms 16 ms 18 ms 166-49-209-194.gia.bt.net [166.49.209.194]
8 * * * Request timed out.
9 678 ms 763 ms 763 ms 141.101.71.61
10 860 ms 831 ms 721 ms one.one.one.one [1.1.1.1]

*Just checked status to confirm: https://www.cloudflarestatus.com/

Edited by BuckleZ (Sun 07-Apr-24 17:52:58)

All has been restored. Does this happen often?

Was it only 1.1.1.1 you saw with high latency, or other destinations too?

The Internet is made up of thousands of independently-run, interconnected networks. Routing/peering issues between those do happen from time to time. However, Cloudflare is one of the best run.

There is some upcoming works at Cloudflare LHR (London). Happen on 17/04/2024 in early hours. Where they expecting some affect upon latancy happening.


https://www.cloudflarestatus.com/incidents/h57sx0bpm2m6

Every site was sluggish to load, pings to normal places (bbc google etc) were fine.

Only thing issue I found was with 1.1.1.1 itself.

How did you test this?

Did you change your DNS on your router away from 1.1.1.1? Or did you check some other way?

Is it resolved?

Post deleted by seb

You do realise this thread is a year old…

There are some current cloudfare, BT/Plusnet peering issues the last 24 hours or so though.