That’s not what I’m talking about. And since number portability and mobile devices became possible, area codes are mostly irrelevant. For example, I’ve lived 2000 miles from the area code of my phone number for probably 10 years now.
Greek here, mobile phones are non-geographic but used to be service provider specific, but even this practice isn't applicable due to number portability.
Landlines used to be geographic but this isn't relevant any more again new to number portability.