Every number type in Japan with real format examples: how numbers are written domestically, how to dial them from abroad, and the E.164 form your systems should store.
Right now in Japan
--:--
Country code
+81
Trunk prefix
0
Intl. call prefix
010
Mobile digits
10
Number formats by type
Examples from the official numbering plan metadata. The E.164 column is the normalized form for databases and APIs.
Type
Domestic (national)
From abroad
E.164
Digits
Landline
03-1234-5678
+81 3-1234-5678
+81312345678
9
Mobile
090-1234-5678
+81 90-1234-5678
+819012345678
10
Toll-free
0120-123-456
+81 120-123-456
+81120123456
[8-17]
Premium rate
0990-123-456
+81 990-123-456
+81990123456
9
VoIP
050-1234-5678
+81 50-1234-5678
+815012345678
10
How to call Japan
From abroad: dial +81 (or your country's exit code, e.g. 00 from Europe, 011 from North America), then the national number without the leading 0. Example: +81 90-1234-5678
Within Japan: dial the number as written domestically, including the trunk prefix 0. Example: 090-1234-5678
Calling abroad from Japan: the international prefix is 010, or simply use + on mobiles.
Storing numbers in software: always store E.164 (+819012345678): unambiguous, sortable, and what SMS and telephony APIs expect.
Exact dial sequence from your country
Pick where you are calling from and get the digit-for-digit sequence for a Japan number, with your country's exit code instead of the generic +.
Dial exactly
Frequently Asked Questions
What is the phone number format in Japan?
Numbers in Japan use country code +81. A mobile number looks like 090-1234-5678 domestically, or +81 90-1234-5678 in international format (E.164: +819012345678). Mobile numbers have 10 national digits.
How do I call Japan from abroad?
Dial your country's international prefix (or +), then 81, then the national number without the leading 0. Example: +81 90-1234-5678.
What is the country calling code for Japan?
The country calling code for Japan is +81. To call abroad from Japan, the international prefix is 010 (or use +).
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