Can't reach U.S. site from U.K. and elsewhere despite rules seeming to permit it

[jdandrea]

Hello! I must be missing something obvious. Will continue trying to sleuth it out. Meanwhile, here’s what I know:

Answer these questions to help the Community help you with Security questions.

What is the domain name?
dynamaxion dot net (using https/TLS - note the spelling is NOT “dymaxion”!)

Have you searched for an answer?
Yes

Please share your search results url:
cloudflare Can't get U.S. site to respond via browser in U.K. even though rules permit it - Google Search (lots of interesting threads but they aren’t leading me to solve it for this particular case)

When you tested your domain, what were the results?
Using dotcom-tools dot com, I can reach it from various places in the U.S. and then Bogota as well. I have contacts in the U.S. who can also reach it just fine. When I use my browser in the U.K. or try with dotcom-tools dot com, I can’t reach it from London, Tel-Aviv, Amsterdam, or Montreal.

Describe the issue you are having:
Can’t get U.S. site to respond via browser in U.K. and elsewhere (except for Bogota) even though rules permit it. The site uses Cloudflare and then hits a Traefik reverse proxy which sends users through Google OAuth2.

What error message or number are you receiving?

This site can’t be reached

In Chrome (macOS): dynamaxion .net took too long to respond. ERR_CONNECTION_TIMED_OUT

What steps have you taken to resolve the issue?
Checked cloudflarestatus (nothing amiss)
Reviewed all Cloudflare settings (looks good)
Reviewed all Google settings (looks good)
Reviewed all firewall settings on web server side (looks good, no country/region blockers)
Reviewed all Traefik settings (looks good)
Tried a dig and traceroute from the U.K. (I can dig and I can traceroute to the server!)
Tried checking via https:// dynamaxion .net/cdn-cgi/trace (doesn’t work from U.K., of course, given the situation)

Was the site working with SSL prior to adding it to Cloudflare?
Yes, and it still does - this has to do with accessing from a country other than U.S.

What are the steps to reproduce the error:

1. Be in the U.S. and visit https:// dynamaxion .net/ - should be directed to Google OAuth
2. Be in the U.K. and try the same thing - timeout occurs and site can’t be reached
3. Be somewhere in the EU and try the same thing - timeout also occurs
4. Try from Canada - timeout occurs
5. Try from Bogota - redirected to Google OAuth, surprisingly!

Have you tried from another browser and/or incognito mode?
Yes, the issue isn’t with the browser from what I can tell.

[sjr]

Your site isn’t proxied so requests are going direct to your origin and not through Cloudflare. You are only using Cloudflare for DNS. As you are getting “connection timed out”, this isn’t a DNS issue.
https://cf.sjr.org.uk/tools/check?9f075146ea2343a5ad4321a2a6ab31b0#dns

Check your origin server firewall rules or with your hosting provider.

I am in the UK and I can resolve the IP address but can’t access port 80 or 443 on the IP address that your domain is resolving to.