I'm searching for a data set that contains the country information (Name, ISO 2 char, ISO 3 char, ISO number, …) and other data. Also I'm looking for all states for each country including their abbreviation.
I'm willing to pay for that data if it is verified, actual and gets updated from time to time. I've already tried searching but couldn't find anything reliable.
Please note that I don't need geographical information directly but just a table of the data above.
Best Answer
There is a good data set from Natural Earth that contains countries and their admin units. As far as I remember abbreviations and ISO codes are also included. The data is free and more or less up to date. Have a look:
http://www.naturalearthdata.com/downloads/10m-cultural-vectors/10m-admin-1-states-provinces/
Maybe this post is helpful too:
Full list of ISO ALPHA-2 and ISO ALPHA-3 country codes