Here is the latest cut-out-and-keep guide to MMSI numbers for RIBnet members. It's in "printer friendly" format ready to print out and laminate.
RIBnet MMSI list
From June 2006, the perpetually out of date manually updated list has been replaced. MMSI numbers are now taken directly from the MMSI field in your user profile, so the list is automatically updated when anyone changes their details. All credit for BenC for making this possible!
You can check and update your information here http://www.rib.net/forum/profile.php?do=editprofile