jmccormac - 11:36 pm on May 26, 2013 (gmt 0)
The ISO3660-1 list is on Wikipedia ( [en.wikipedia.org...] ). The other thing to watch out for is that some IP ranges might be reclassified as EU (regional) or similar with the country code being decided by the local regional IP registry (ARIN/RIPE/APNIC/LACNIC etc). Also the UK uses UK rather than GB. I was doing a spreadsheet of gTLD domains counts by country/country codes and the EU and regional ones were a bit problematic. Also new country codes go live periodically (.ss being a recent one).