It's with a grave pain in my heart I inform you this sad revelation is confirmed by two server tracking sites: gamemonitoring.net and gametracker.com Where it's down.
Thus as Half-Life enters it's 25 years of existance, we mark a quiet end of an era. The saddest part about this is we don't even know how long it's been down for.
We do none the less wish you a happy anniversary of our favourite game, it's just a shame we can't check the "new" player models on the server we'd ordinarely turn to when our own hosting efforts failed.