The requested vessel with name GEKKO and MMSI:0 and IMO:5127360 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
GEKKO N/A 219014416 Dec 18, 2017 10:12 UTC
GEKKO N/A 219020512 Oct 01, 2017 04:48 UTC
GEKKO MARU N/A 431402021 JP KOJ Oct 27, 2016 19:50 UTC

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