Are you aware that this forum is not accessible from certain ISPs, IP ranges from India? There is something wrong with the network access of your infra. I had to use VPN or use different ISP to access the forum.
I don't know that it's an issue with our configuration because we have no more blocked IP addresses. And that particular IP range was not blocked in the rules we had previously either.
I've added the range you shared as an explicit Allow rule.