Hello. I think I have lost my contacts on ISP who provides the PoP... so now I need to make my first ticket, I guess. So yes, reverse DNS seems to be broken for subnet 2001:ad0:91f::/48 (ID R3574). I know it was broken before and then the issue was in servers located before SixXS ones in DNS chain. Now, I don't know. Looks same when I checked with "dig +trace". Can someone investigate that issue? Thanks.