I have listed the different regions of the world and their codes as referenced by the UN Statistical Division in the UN M49 standard. These are the "Standard Country or Area Codes for Statistical Purposes" (Series M, No. 49)

You will find this list below. The NLS code distinguishes between French (fr-FR) and English (en-GB) languages.

NLS_CODE
N1
N1Code
N2
N2Code
N3
N3Code
ID
en-GBAfrica21
en-GBAfrica21
en-GBAmericas192
en-GBAmericas192
en-GBAntarctica9993
en-GBAntarctica9993
en-GBAsia1424
en-GBAsia1424
en-GBEurope1505
en-GBEurope1505
en-GBOceania96
en-GBOceania96
en-GBAfrica2Northern Africa157
en-GBAfrica2Sub-Saharan Africa2028
en-GBAfrica2North Africa157
en-GBAfrica2Sub-Saharan Africa2028
en-GBAmericas19Latin America and the Caribbean4199
en-GBAmericas19Northern America2110
en-GBAmericas19Latin America and the Caribbean4199
en-GBAmericas19North America2110
en-GBAsia142Central Asia14311
en-GBAsia142Eastern Asia3012
en-GBAsia142South-eastern Asia3513
en-GBAsia142Southern Asia3414
en-GBAsia142Western Asia14515
en-GBAsia142Central Asia14311
en-GBAsia142Far East3012
en-GBAsia142South East Asia3513
en-GBAsia142South Asia3414
en-GBAsia142Western Asia14515
en-GBEurope150Eastern Europe15116
en-GBEurope150Northern Europe15417
en-GBEurope150Southern Europe3918
en-GBEurope150Western Europe15519
en-GBEurope150Eastern Europe15116
en-GBEurope150Northern Europe15417
en-GBEurope150Southern Europe3918
en-GBEurope150Western Europe15519
en-GBOceania9Australia and New Zealand5320
en-GBOceania9Melanesia5421
en-GBOceania9Micronesia5722
en-GBOceania9Polynesia6123
en-GBOceania9Australia and New Zealand5320
en-GBOceania9Melanesia5421
en-GBOceania9Micronesia5722
en-GBOceania9Polynesia6123
en-GBAfrica2Sub-Saharan Africa202Eastern Africa1424
en-GBAfrica2Sub-Saharan Africa202Middle Africa1725
en-GBAfrica2Sub-Saharan Africa202Southern Africa1826
en-GBAfrica2Sub-Saharan Africa202Western Africa1127
en-GBAfrica2Sub-Saharan Africa202East Africa1424
en-GBAfrica2Sub-Saharan Africa202Central Africa1725
en-GBAfrica2Sub-Saharan Africa202South Africa1826
en-GBAfrica2Sub-Saharan Africa202West Africa1127
en-GBAmericas19Latin America and the Caribbean419Caribbean2928
en-GBAmericas19Latin America and the Caribbean419Central America1329
en-GBAmericas19Latin America and the Caribbean419South America530
en-GBAmericas19Latin America and the Caribbean419Carraïbes2928
en-GBAmericas19Latin America and the Caribbean419Central America1329
en-GBAmericas19Latin America and the Caribbean419South America530
en-GBEurope150Northern Europe154Channel Islands83031
en-GBEurope150Northern Europe154Channel Islands83031