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Japan DID Requirements

Here you will a list of detailed requirements for acquiring numbers in Japan.

Telnyx Engineering avatar
Written by Telnyx Engineering
Updated over a month ago

DID Number Requirements for Japan


Regulatory change in Japan to effect provisioning of new Japanese local numbers.

New requirements from the Ministry of Internal Affairs and Communications (MIC) will require every owner of a new Japanese local number to have a physical interconnection on premise. This makes service provisioning very challenging and as a result, these numbers will be withdrawn from service with our underlying carriers and therefore will no longer be usable. You should have already received notification from our Numbering Operations Team if you currently have a Japanese local number on your account.

What numbers are affected?

Japanese local numbers have prefixes like +8144 for Kawasaki, +8152 for Nagoya, or +816 for Osaka. Users will no longer be able search for or provision new Japanese local numbers through Telnyx. All existing Japanese local numbers will be withdrawn from operations at Telnyx starting March 1, 2023. Only national and toll-free Japanese numbers will be available from that point on.

What do I need to do?

We urge users to start replacing current Japanese local numbers with Japanese national and toll-free numbers. National numbers are those with the prefix +8150, and toll-free numbers begin with +81 800 or +81 120. These numbers are easily searchable through our portal and APIs.

In order to purchase a Japan number you will need to provide the following:

Local, National, and Toll-Free Numbers in Japan

For personal identity verification:

* Name, last name
* Contact phone number
* Certificate of the person in charge (1 of the following)

  1. Local driver's license with both sides of driving history certificate

  2. My Number Card (front only)

  3. Japanese Passport

  4. Health insurance cards (redacted basic pension number and insurance number)

    1. National Pension Handbook

    2. Maternal and Child Health Handbook

    3. Seal Registration Certificate

    4. Basic Resident Registration Card

  5. Residence card (dated within 3 months)

    1. Special Permanent Resident Certificate

  6. Certificate of Residence (redacted personal number)

For business identity verification:

* Name, last name of an authorized representative
* Contact phone number
* Company name
* Certificate of contractor (1 or 2)

  1. Company registered matters

  2. Certificate of company seal registration (dated within 3 months)

* Certificate of authority of the person in charge (supplemental - see details below)

  1. Power of Attorney (must include name and seal of the representative of the corporation)

​For address verification:

* Address in Japan (street, building number, postal code, city and country) * Proof of Address (A or B - see details below)

  1. If the address of the Certificate of contractor is different from the current address or place of use, or

  2. the address of the Certificate of the person in charge is different from the current address, or, if the current address is not listed, the following supplemental documents must be submitted.

Supplementary Documents for A

  1. Receipts of national and local taxes (stamped and dated within 3 months)

  2. Certificate of Tax Payment (stamped and dated within 3 months)

  3. Receipts of social insurance premiums (stamped and dated within 3 months)

  4. Certificate of receipt of utility bills (electricity, city gas, water, and landline phone invoices acceptable)

Supplementary Documents for B

  1. Receipt of utility bills (electricity, city gas, water, and landline phone invoices acceptable)

  2. Certificate of Tax Payment (stamped and dated within 3 months)

  3. Receipt of social insurance (stamped and dated within 3 months)

Additional Information:
* Certificates with an expiration date must be within the expiration date, and certificates without an expiration date must be within 3 months of the date of issue.
* Power of Attorney is not required if the address and name of the person in charge of the application match the registered name of the representative by the documents in the Company registered matters.

Helpful for acquiring Japan DIDs

Want to learn more about what you can do with Global DIDs in Japan? Telnyx Global DID Numbers are future-ready and start at only $1.

DID numbers are virtual, they can be assigned or reassigned to any phone or device. They’re also flexible, meaning businesses can create unlimited Japan DID numbers on a single SIP trunk, with few limitations.

Unrivaled DID connectivity in Japan

Telnyx continuously expands global calling services for seamless connectivity in Japan. We currently offer local calls in 49 countries and PSTN replacement in 35+ (with more coming soon).

Get Japan DID numbers on demand

Looking for a DID provider that offers SIP trunk connections? Telnyx streamlines your VoIP operations by providing both DID numbers and SIP trunking. This is more affordable, simplifies your phone infrastructure and reduces how many invoices you manage each month. We also own and operate our own IPs, so your calls bypass congestion on the public internet, making them more secure and reliable.

Benefits of Japan DIDs

  • Potential customers in Japan are 400% more likely to answer calls from local numbers

  • Improve call routing where individual DIDs can be assigned to specific business functions

  • Japan DIDs are scalable and grow as your business grows

  • Enhanced privacy for individuals, you keep your personal number personal

  • Advanced call tracking and analytical capabilities to measure volume, duration and more

Additional resources for Japan DIDs

Blog: How to get a VoIP number

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