Cloudflare.com unreachable 443

General
1

I am unable to reach cloudflare.com or any slash after that eg. IP Ranges - the lookup times out with unreachable.

If I curl the ip list (which is specifically what I am after) ie. curl “https://www.cloudflare.com/ips-v4” I get a 443 connection refused.

If I log into Cloudflare by going directly to the dashboard login (https://dash.cloudflare.com/login) its fine I can log in no problem.

I contacted my ISP, and from their help desk they could reach cloudflare.com no problem, so I’m assuming it’s something to do with my IP address being restricted by Cloudflare for some reason.

Any ideas?

2

Can you please provide us with the exact command you did run?

I just run:
curl https://www.cloudflare.com/ips-v4 (to test in Shell)
it worked flawlessly.

If it still doesn’t work please run:
curl -v https://www.cloudflare.com/ips-v4 (for verbose)
and post the complete output here.

3

Hi @M4rt1n here is the output from the curl:

$ curl -v https://www.cloudflare.com/ips-v4
*   Trying 104.16.124.96...
* TCP_NODELAY set
*   Trying 2606:4700::6810:7c60...
* TCP_NODELAY set
* Connection failed
* connect to 2606:4700::6810:7c60 port 443 failed: Network is unreachable
*   Trying 2606:4700::6810:7b60...
* TCP_NODELAY set
* Connection failed
* connect to 2606:4700::6810:7b60 port 443 failed: Network is unreachable

* Connection failed
* connect to 104.16.124.96 port 443 failed: Operation timed out
*   Trying 104.16.123.96...
* TCP_NODELAY set
* Connection failed
* connect to 104.16.123.96 port 443 failed: Operation timed out
* Failed to connect to www.cloudflare.com port 443: Operation timed out
* Closing connection 0
curl: (7) Failed to connect to www.cloudflare.com port 443: Operation timed out
4

Thats weird. There are several possibilities…

Maybe its even a Cloudflare problem, but before I would really do some more tests:

  1. Can you please try this on other machines?
  2. Can you also please try from different networks and IPs?
5

Yep I tried it from a different machine on same network / IP - same issue,

Tried from same machine and also different machine on different network / IP - it works fine -

Which is largely what lead me to think Cloudflare is restricting my IP (the dynamic IP supplied by the ISP), but when I spoke to their help desk, they could reach it fine - so it doesn’t seem to be with the ISP as a whole, but just the IP address that I’m assigned

6

Yes that what it seems like. But I cant judge here as I dont know any about your IP/Network etc. I think this is something you will have to sort out with Cloudflare.
Since the link you want to access is a static link which should be publicly accessable I think you have good chances, if you reach out to their support and ask them nicely.

There is apparently nothing I can do with the tools I have.

7

Thanks for your time @M4rt1n I’ve created a support request will follow up here if I get an answer

8

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