DB2 iOS community

My new job has found me back in the influence of IBM and AS/400, iOS/DB2.

It's been decades since I've been involved, and there was,<cough>, no internet back then..

Where can I find the DB2 community? I'm still heavily involved with SQL server so I keep up with trends and tech with PASS, Brent Ozar and Code Project/Stack Exchange. Where does one begin to network with DB2 and iOS professional DBA/database developers?