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by pc86 30 days ago
Surely your ISP can see every URL you visit if they have a reason to? They're routing the traffic.
3 comments

No they can't. They obviously know the IP addresses, but that's not terribly useful since everything is behind a cloudflare proxy nowadays. The server hostname may provide some more information, if the server doesn't support ECH [1], but the full URL is encrypted.

https://en.wikipedia.org/wiki/Server_Name_Indication#Encrypt...

If you use HTTPS they can see that you hit wikipedia (they will see you are trying to do a DNS lookup for en.wikipedia.org), but they can't see that you are viewing https://en.wikipedia.org/wiki/Hundeprutterutchebane in particular- that is only available to someone who can read the body of the HTTP request, which with HTTPS is encrypted.
Routing only shows the server IP address, which isn’t very useful if it is AWS or Azure or CloudFlare or some other CDN.