The requested vessel with name MAYFAIR and MMSI:0 and IMO:5020885 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
MAYFAIR N/A 503619200 Feb 19, 2018 17:22 UTC
MAYFAIR 9445643 538007089 NG LOS Feb 16, 2018 18:24 UTC

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