It's 72.51.33.136:30565 ... we have since moved away from the center where griefers would destroy things (since there is no whitelist).
We had it really epic, then everything got destroyed (even the remote bedrock-level underground shelter away from griefers...they found that too). It's really fun though...great people on there. Dunno if Lampis1337 will get back on...he helped a TON and was cool but his stuff got bombarded and haven't seen him since.
Either way, get on there, tell them AJ sent you and you should be good (this applies to anyone here wanting to join). Coordinates for the Tower (the NPC settlement is somewhat nearby) are:
X: 564
Y: 107
Z: -249
Can't remember what spawn is...you can figure that out yourself (F3).
Good luck lol.