area code

US /ˈer.i.ə ˌkoʊd/
UK /ˈer.i.ə ˌkoʊd/
"area code" picture
1.

區號

a three-digit number that identifies a specific geographic region in the North American Numbering Plan, used before the local telephone number when making a call to that region

:
Please dial the area code before the seven-digit number.
請在七位數字前撥打區號
What's the area code for Los Angeles?
洛杉磯的區號是多少?