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SMS Checker

+81 Who Called Me? Japan Number Converter

Got a call or SMS from a number starting with +81? Paste it here to convert it to the local Japanese format (starting with 0), see whether it is a mobile, landline, IP phone, or toll-free number, and jump straight to caller reports.

The number is processed entirely on your device and is never sent to any server.

How to convert a +81 number to the local format

  1. 1

    +81 is Japan's country code. In international format, the leading 0 of a Japanese number is replaced by +81.

  2. 2

    Just put the 0 back: +81 90-1234-5678 becomes 090-1234-5678.

  3. 3

    Then look the converted number up in our lookup to see caller reports.

+81 prefixes explained

The digits right after +81 tell you what kind of number it is - mobile, landline, toll-free, and more.

+81 90Mobile phone / Nationwide (no regional information)+81 80Mobile phone / Nationwide (no regional information)+81 70Mobile phone / Nationwide (no regional information)+81 60Mobile phone (new range, not yet in service) / Nationwide (no regional information)+81 50IP phone (VoIP) / Nationwide (no regional information)+81 120Toll-free (Free Dial, receiver pays) / Nationwide+81 800Toll-free (Free Call, receiver pays) / Nationwide+81 570Navi Dial (unified access number) / Nationwide+81 3Landline (area code) / Tokyo (mainly the 23 wards)+81 6Landline (area code) / Osaka (mainly Osaka City)

Frequently asked questions

Which country does +81 belong to?

+81 is the country code for Japan. +81 90-1234-5678 is the same number as 090-1234-5678 dialed inside Japan - the leading 0 is simply replaced by +81 in international format.

Is a call from +81 a scam?

Not by itself - +81 only tells you the call is from a Japanese number. Friends abroad or phones that store contacts in international format also show +81. That said, unsolicited +81 calls and SMS do include scams and telemarketing, so look the number up for reports before calling back.

Will I be charged for calling a +81 number back?

From inside Japan, replace +81 with 0 and normal domestic rates apply. From outside Japan, calling +81 is an international call and your carrier's international rates apply.

Related tools and guides

Japanese SMS Meaning CheckerPaste a Japanese SMS to get a plain-language summary of what it claims, plus a scam-pattern check.What is +81? Japan's country code explainedA deeper article on why numbers appear with +81 and how country codes work.

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Disclaimer

A number prefix only tells you the type of number - it does not identify the caller or guarantee that a call is safe. Caller IDs can also be spoofed.

The number you enter is processed entirely on your device and is never sent to any server.