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It seems that www.squiz.net cannot be resolved from your server, we still want to figure if it's a problem with your ISP or a problem on our side. On squish when we do a dnscheck it's correctly see everything is ok. When i registered via bugzilla with my address @squiz.net it did send me an email and it seems that wiggum.w3.org and w3.org webserver(s) are on the same network so you are resolving from the same ISP. I dont know when we get a Can't connect. Would be possible to see the output of dig squiz.net ? is there an output to host www.squiz.net ? Cheers, Chmouel.
Works for me now. AFAIK validator.w3.org is actually two separate systems nowadays, so it's possible I've only hit one of them.
Whatever issue there was with the DNS at the time, it works now.