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Inquiries about My Number System

Last Updated:

My Number toll-free number

© 0120-95-0178 (Toll free)

  • Follow the voice guidance and select the menu for the information you want to hear.
    No. 1: My Number Card, electronic certification, individual number notice, notification card, certification issue service at convenience stores, etc.
    No. 2: Loss or theft of smartphones equipped with My Number Card and electronic certification
    No. 3: My Number System and corporate number
    No. 4: Mynaportal and Smartphone My Number Card
    No. 5: Use of My Number Card's health insurance card
    No. 6: public money receiving account Registry Program and Bank Account Numbering Program
    No. 7: Minor license
    No. 8: Family register reading

Reception hours

  • Weekdays 9:30 to 20:00
  • Weekends and holidays 9:30 to 17:30 (except for the New Year holidays (December 29 to January 3))

* For No. 1, from 9:30 to 20:00 on weekdays including the year-end and New Year holidays, Saturdays, Sundays and holidays.
* Number 2: Temporary suspension of card use due to "loss or theft of My Number Card" will be handled 24 hours a day, 365 days a year.
* No. 3 to No. 6 are closed during the New Year holidays.
*If you have difficulty hearing or speaking, please use the telephone relay service.
Telephone relay service is a service in which an interpreter operator intervenes to interpret sign language and letters so that people with hearing or speech difficulties (hereinafter referred to as "Hearing-impaired People") can use the phone.
For details, please see the telephone relay service page on the Ministry of Internal Affairs and Communications website below.
Telephone relay service

If you are a person with hearing disabilities who would like to use telephone relay service, please contact the telephone relay service provider (Nippon Foundation telephone relay service).
For details, please refer to the Nippon Foundation telephone relay service information page below.
Nippon Foundation telephone relay service

*If some IP phones do not connect to the above dial, please dial the following.

  • My Number System, Mynaportal
    050 3816 9405 (call charges apply)
  • My Number Card, electronic certification, individual number notice, notification card or temporary suspension of use of My Number Card due to loss or theft
    050 3818 1250 (call charges apply)

*If you would like to speak in a foreign language, please dial:

  • My Number System, Mynaportal, and public money receiving account registration systems
    • Available languages: English, Chinese, Korean, Spanish, Portuguese, Vietnamese, Thai, Indonesian, Tagalog, Nepali
    • Hours:
      • Weekdays 9:30 to 20:00
      • Saturdays, Sundays and national holidays 9:30 to 17:30 (excluding the New Year holidays)
    • 0120 0178 26 (toll-free)
  • My Number Card, electronic certification, individual number notice, notification card or temporary suspension of use of My Number Card due to loss or theft
    • Available languages: English, Chinese, Korean, Spanish, Portuguese
      • Reception hours: 8:30 to 20:00
        *24-hour suspension
    • Available languages: Thai, Nepali, Indonesian, Vietnamese, Tagalog
      • Hours: 9:00 to 18:00
    • 0120 0178 27 (toll-free)

Inquiries regarding corporate number

For the corporate number, please contact the National Tax Agency Corporate Number Office.