Weird, now it’s working for me too. That must mean it was caused by something on WordPress.org’s side.
Guys, we are looking form confirmation that a Spamhaus block can result in WordPress blocking the IP. You are suggesting all kinds of changes without any confirmation that this might be the issue. I personally would find such actions by WordPress very questionable.
The problem might be something completely different.
So it is confirmed that a Spamhaus block can result in WordPress.org blocking the IP?
I came here because this exact thing is happening to me. I was about to write a post but saw yours.
The only thing I found was that my VPS’s IP is listed on SpamHaus block list, which I don’t have control over since this is a VPS that I share with other people. AI says WordPress’s CDN might block connections based on SpamHaus blocklist. The cause might be something completely different though.