The requested vessel with name MELOR and MMSI:631939000 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
MELOR 9116254 636016006 E OPL SGP Feb 16, 2018 08:22 UTC
MELORIA 9292280 247171100 IT MLZ Feb 19, 2018 12:20 UTC
MELORIA N/A 244130456 Jan 28, 2018 15:57 UTC

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