The requested vessel with name DNESTR and MMSI:0 and IMO:5091171 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
DNESTR N/A 273384920 Oct 07, 2016 13:12 UTC
DNESTROVETS N/A 272014700 Oct 14, 2016 09:45 UTC

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