0138 area code — Hakodate
0138 is the telephone area code for Hakodate in Japan. It falls within Hokkaido. Numbers are written internationally as +81 138.
How to call Hakodate
- From abroad
- +81 138 XXX XXXX
- Within Japan
- 0138 XXX XXXX
- Country calling code
- +81
About the 0138 area code
Dialed within Japan as 0138, this code is written internationally as +81 138 followed by the subscriber's local number.
Area codes like 0138 tie a phone number to a place — useful for knowing where a call or message originates, and for signing up to services that expect a local Japan number. To actually receive an SMS on a Japan number, a temporary or virtual line does the job without exposing your own SIM.
Frequently asked questions
What area code is Hakodate?
Hakodate uses the area code 0138, written internationally as +81 138.
How do I call Hakodate from another country?
Dial your international access code, then +81 138, then the local number — dropping the national leading 0.
What time is it in Hakodate?
Hakodate is in the Asia/Tokyo time zone; the live clock above shows the current local time.
Is 0138 a mobile or a landline code?
0138 is a geographic (landline) area code for Hakodate. Mobile numbers in Japan use their own separate prefixes.