The requested vessel with name XYZ and MMSI:345009000 and IMO:0 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
XYZZY(JUST SPELL IT) N/A 367655470 Feb 20, 2018 19:09 UTC

Also, you may try to find the vessel in our comprehensive Vessels Database or track this ship on the map.