[Taxacom] Obtaining file of level 2 divisions of countries

[Mary Barkworth]

I am trying to obtain a file of the level 2 divisions of countries, (state for most of the US, Province for Pakistan). From the ISO website: ISO 3166 has three parts: codes for countries, codes for subdivisions and formerly used codes (codes that were once used to describe countries but are no longer in use). What I am looking for is the codes for subdivisions. Can anyone point me to a source, preferably one which permits download of an xls or csv file.
All the best for 2022,
Mary