The requested vessel with name MV VEGA and MMSI:634999920 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
MV VEGA LEA 9477684 636092045 CJK,CN Feb 24, 2018 14:56 UTC

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