For what purpose? What context? You have given no information about the requester or the request.
en-AU, en-CA, en-GB, en-IE, en-NZ, en-US, and en-ZA are the usual ways of doing these things.
On 12 Nov 2017, at 09:08, Gerard Meijssen gerard.meijssen@gmail.com wrote:
Hoi, There is a request for a code for Australian and USAmerican English. For use in Wikidata there is imho no reason why not to allow it. Thanks, GerardM _______________________________________________ Langcom mailing list Langcom@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/langcom