I am not aware of any to any extent exhaustive open databases of MMSI or AIS data. Sea register MMSI data is fragmented and generally not open enough. Only co

I am not aware of any to any extent exhaustive open databases of MMSI or AIS data. Sea register MMSI data is fragmented and generally not open enough. Only commercial data providers can load you up with good historical AIS data and registers, so you can create MMSI table or whatever. This again depends of what do you want to achieve. Something like 3 months of amateur worldwide AIS feed can give you a pretty good snapshot with MMSIs, names etc.