While the list is very large of the vehicles affected, you can get official information if your vehicle is affected by plugging in your VIN number into the sites below. Some of these sites have been around for a while (ie German) while others just launched today (Canada). Below is a partial list of the jurisdictions and their websites:
Canada: http://www.vwemissionsinfo.ca/vin-lookup
New Zealand: https://www.volkswagen.co.nz/diesel-emission-statement/
United Kingdom: http://www.volkswagen.co.uk/owners/dieselinfo
United States: https://www.vw.com/owners-recalls
VWAG (Germany): http://info.volkswagen.de/de/de/home.html?tab=check-own-car
Audi Germany: http://www.audi.de/de/brand/de/neuwagen/layer/serviceaktion.html#
Audi US: http://web.audiusa.com/recall/
Canada: http://www.vwemissionsinfo.ca/vin-lookup
New Zealand: https://www.volkswagen.co.nz/diesel-emission-statement/
United Kingdom: http://www.volkswagen.co.uk/owners/dieselinfo
United States: https://www.vw.com/owners-recalls
VWAG (Germany): http://info.volkswagen.de/de/de/home.html?tab=check-own-car
Audi Germany: http://www.audi.de/de/brand/de/neuwagen/layer/serviceaktion.html#
Audi US: http://web.audiusa.com/recall/