Problem with some Cloudflare IPs | Cloudflare Developers | Page 1

woven garden Jan 29, 2025, 11:41 PM

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I'm having strange problems with Cloudflare's IPs in my region (Brazil). I've checked and the problem is only happening in certain regions of Brazil. In some regions, the ping works perfectly, but in other regions such as São Paulo, Paraná and Santa Catarina there are problems. My domain is nickuc.com and I'm using the IP 104.21.96.1 to perform the tests.

These are the traceroutes of people from various places who are having problems. All the IPs seem to belong to CIDR 104.21.0.0/16.

Blumenau, Santa Catarina:
Rastreando a rota para api.nickuc.com [104.21.16.1]
com no máximo 30 saltos:

1 1 ms 1 ms 1 ms 192.168.0.1
2 13 ms 9 ms 9 ms 10.42.0.1
3 10 ms 9 ms 9 ms bd0703a1.virtua.com.br [189.7.3.161]
4 11 ms 11 ms 10 ms 192.168.252.11
5 * * * Esgotado o tempo limite do pedido.
6 * * * Esgotado o tempo limite do pedido.
7 * * * Esgotado o tempo limite do pedido.
8 * ^

Curitiba, Paraná
Rastreando a rota para api.nickuc.com [104.21.112.1]
com no máximo 30 saltos:

1 <1 ms <1 ms <1 ms 192.168.100.1
2 * * * Esgotado o tempo limite do pedido.
3 2 ms 2 ms 2 ms 200.150.94.96
4 * * * Esgotado o tempo limite do pedido.
5 * * * Esgotado o tempo limite do pedido.
6 * * * Esgotado o tempo limite do pedido.
7 * * * Esgotado o tempo limite do pedido.
8 * * * Esgotado o tempo limite do pedido.
9 * * * Esgotado o tempo limite do pedido.
10 *

Espírito Santo do Pinhal, São Paulo
Rastreando a rota para api.nickuc.com [104.21.80.1]
com no máximo 30 saltos:

1 <1 ms <1 ms <1 ms 192.168.200.1
2 2 ms 2 ms 2 ms 100.91.64.1
3 2 ms 1 ms 1 ms 192.168.250.80
4 4 ms 3 ms 3 ms 168-121-53-40.as28220.net [168.121.53.40]
5 7 ms 7 ms 10 ms 172.19.0.2
6 * * * Esgotado o tempo limite do pedido.
7 * * * Esgotado o tempo limite do pedido.
8 * * * Esgotado o tempo limite do pedido.
9 * * * Esgotado o tempo limite do pedido.
10 * * * Esgotado o tempo limite do pedido.
11 * * * Esgotado o tempo limite do pedido.
12

Ribeirão Preto, São Paulo
Rastreando a rota para api.nickuc.com [104.21.48.1]
com no máximo 30 saltos:

1 <1 ms 1 ms <1 ms 192.168.0.1
2 22 ms 7 ms 9 ms 100.89.128.1
3 3 ms 4 ms 4 ms bd3ffa31.virtua.com.br [189.63.250.49]
4 6 ms 6 ms 6 ms 10.203.58.170
5 5 ms 5 ms 5 ms bd3ffaf9.virtua.com.br [189.63.250.249]
6 * * * Esgotado o tempo limite do pedido.
7 * * * Esgotado o tempo limite do pedido.
8 * * * Esgotado o tempo limite do pedido.
9 * * * Esgotado o tempo limite do pedido.
10 * * * Esgotado o tempo limite do pedido.
11 * * * Esgotado o tempo limite do pedido.
12 * *

woven garden Jan 29, 2025, 11:57 PM

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There are a considerable number of reports made by users: https://downdetector.com.br/fora-do-ar/cloudflare/

untold glacier Jan 30, 2025, 12:47 AM

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@woven garden you still seeing this issue?

woven garden Jan 30, 2025, 12:48 AM

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untold glacier <@366584837856821249> you still seeing this issue?

Yes, the problem persists here:

vague pilot Jan 30, 2025, 1:00 AM

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I'm also having the same problem on 104.21.32.1

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And a lot of my customers too

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(This is a R2 bucket)

untold glacier Jan 30, 2025, 1:00 AM

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<@&797524744156086293> this seems credible as a cf/wider issue that may need to be investigated/ status paged

unreal pecan Jan 30, 2025, 1:01 AM

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All Brazil users? @vague pilot @woven garden

vague pilot Jan 30, 2025, 1:01 AM

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Yes

unreal pecan Jan 30, 2025, 1:01 AM

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Guessing some ISP blocked an IP range...

woven garden Jan 30, 2025, 1:01 AM

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unreal pecan All Brazil users? <@247796802449965066> <@366584837856821249>

Apparently yes, my customers from other regions aren't having any problems

unreal pecan Jan 30, 2025, 1:02 AM

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@pseudo badger can you esc pls

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Thanks @untold glacier

pseudo badger Jan 30, 2025, 1:02 AM

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Escalating, thanks for the reports folks

untold glacier Jan 30, 2025, 1:02 AM

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No prob

strong drift Jan 30, 2025, 1:16 AM

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I discovered this problem is happening just in free plan. SInce I bought Pro plan (10 minutes ago) my website is working fine

oak goblet Jan 30, 2025, 1:20 AM

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FWIW in Mogi Guacu, SP, cannot reach it from VIVO/Telefonica or TIM/Sparkle but no issue on smaller ISPs (Neolink, Evolunet)

pseudo badger Jan 30, 2025, 1:20 AM

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Folks are actively engaged and investigating now, thanks again all

arctic pulsar Jan 30, 2025, 1:25 AM

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oak goblet FWIW in Mogi Guacu, SP, cannot reach it from VIVO/Telefonica or TIM/Sparkle but ...

Hey I know you!

fierce bay Jan 30, 2025, 1:26 AM

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Several players on our network are unable to access static files served by proxy

pseudo badger Jan 30, 2025, 1:30 AM

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https://www.cloudflarestatus.com/incidents/qy8wn44tb7xw thanks all!

Network Connectivity Issues in Brazil

umbral scarab Jan 30, 2025, 1:32 AM

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This happened here too, it affected users from all over Brazil, about half of the user base lost connection, the problem started exactly between 17:55 and 18:00 UTC-3, thousands of users were unable to connect, in this domain I have an average of 30k unique users per day, most of them in Brazil. I solved it by turning off the Cloudflare proxy

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However, some services I use through Workers/Pages are also not working and I have no way to fix this.

half narwhal Jan 30, 2025, 1:36 AM

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@woven garden, would you mind sharing your source IP for those traceroutes? Feel free to DM me if you prefer. Engineering have asked for one.

umbral scarab Jan 30, 2025, 1:38 AM

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half narwhal <@366584837856821249>, would you mind sharing your source IP for those tracerout...

One of the source IPs I tested and had problems with was 187.19.244.34, I don't have access to that one now to see if it's still bad

half narwhal Jan 30, 2025, 1:39 AM

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Awesome, thanks.

woven garden Jan 30, 2025, 1:47 AM

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half narwhal <@366584837856821249>, would you mind sharing your source IP for those tracerout...

IP of Blumenau, Santa Catarina that I tested: 179.223.203.242 (for the other traceroutes I would need to ask my clients)

half narwhal Jan 30, 2025, 2:03 AM

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Thanks NIck. Don't worry about that at this point.

woven garden Jan 30, 2025, 3:21 AM

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It seems to be working now. The ping is working and the site is accessible again.

umbral scarab Jan 30, 2025, 12:09 PM

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Will some explanation of the problem be given after it is fully fixed?

#Problem with some Cloudflare IPs