The requested vessel with name DOU DOU and MMSI:0 and IMO:5017632 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
DOUADOU N/A 227141040 Jul 22, 2017 12:06 UTC

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