The requested vessel with name YU LONG NO125 and MMSI:312000125 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
YU LONG NO.2 N/A 416003434 Feb 13, 2018 08:08 UTC

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