Area code 3
Tokyo · Tokyo, Yokohama
- Area code
- 3
- Country
- Japan
- Region
- Tokyo
- Major cities
- Tokyo, Yokohama
- Time zone
- Asia/Tokyo
- Note
- Tokyo and Kanagawa area code.
This is a domestic area code inside Japan. It is not the international calling code.
Frequently asked questions
Which cities use area code 3?
Area code 3 serves Tokyo in Japan, including Tokyo, Yokohama.
What region does area code 3 cover?
Area code 3 covers Tokyo. Area codes route calls to a specific city or region within a country's national telephone network.
What is the difference between an area code and a calling code?
A calling code routes a call across borders to a national network, while an area code routes it to a city or region inside that network. For a Japan number, the country calling code is the international prefix and 3 is the domestic area code.
What time zone is area code 3 in?
Area code 3 is in the IANA time zone Asia/Tokyo.
Is area code 3 the international calling code?
No. 3 is a domestic area code inside Japan, not the international calling code. To call this region from abroad, you dial the country's calling code first, then 3 and the local number.