Translation guide
In Japanese, an area code is called 市外局番 (shigai kyokuban). When giving a phone number, the area code is often enclosed in parentheses or separated by a hyphen.
area code
The numerical prefix for a geographic region in a phone number
What's the area code for Tokyo? · You need to dial the area code first.
Japanese phone numbers are often written with the area code in parentheses, like (03) 1234-5678, or separated by hyphens: 03-1234-5678.
Standard term for area code. Used in formal and everyday contexts.
The area code is 03.
Please dial the area code first.