On the 22 September 2015, the Northern Ireland Ordinance Survey (OSNI) which is now part of the Land and Property Services (LPS) released the OSNI Largescale Boundaries - Townlands dataset for Northern Ireland under a UK Open Government Licence
This comes 15 days AFTER OpenStreetMap user Stephen_Co_Antrim completed Syunshin, the last townland to be mapped in Northern Ireland!
Comment from RobJN on 29 September 2015 at 19:04
Good way to testing the quality of the townland mapping? Well done for finishing it all though :-)
Comment from DaCor on 2 October 2015 at 20:44