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Inquiries about My Number System

My Number General 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, E-Certificate, Individual Number Notification, Notification Card, Certificates at Convenience Stores, etc. Issue Service
    No. 2: smartphone lost or stolen with My Number Card and E-Certificate
    No. 3: My Number System / corporate number
    No. 4: Mynaportal and E-Certificate for smartphones
    No. 5: Using health insurance card in My Number Card
    No. 6: public fund receiving account Registration System / Deposit Account Numbering System

Reception Hours

  • Weekdays 9:30 am to 8:00 pm
  • From 9:30 am to 5:30 pm on weekends and holidays (excluding the year-end and New Year holidays (December 29 to January 3))

* No. 1 is open from 9:30 am to 8:00 pm on weekdays, weekends and holidays, including the year-end and New Year holidays.
* Temporary suspension of card use due to No. 2 "My Number Card no lost or stolen" will be dealt with 24 hours a day, 365 days a year.
* Number 3 to 6 are closed during the year-end and New Year holidays.
*If you have difficulty hearing or speaking, please use a telephone relay service.
Telephone relay service is a service in which an interpreter operator intervenes to interpret sign language and characters so that people who have difficulty in hearing or speaking (hereinafter referred to as the "Deaf and Hard-of-Hearing") can use a telephone.
For details, please visit the telephone relay service page on the Ministry of Internal Affairs and Communications website below.
Telephone relay service

If you are deaf or hard of hearing and 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 following guide page of the Nippon Foundation telephone relay service.
Nippon Foundation telephone relay service

*If some IP phones cannot be connected to the above number, please dial the following number.

  • My Number System, Mynaportal
    050-3816-9405 (Call charges apply)
  • Temporary suspension of use of My Number Card by My Number Card, E-Certificate, Personal Identification Number Notice, Notification Card or lost or stolen
    050-3818-1250 (Call charges apply)

*If you would like to speak in a foreign language, please dial the following number.

  • My Number System, Mynaportal and public fund receiving account Registries
    • Languages: English, Chinese, Korean, Spanish, Portuguese, Vietnamese, Thai, Indonesian, Tagalog, Nepali
    • Hours:
      • Weekdays 9:30 am to 8:00 pm
      • From 9:30 am to 5:30 pm on weekends and holidays (excluding year-end and New Year holidays)
    • 0120 0178 26 (toll-free)
  • Temporary suspension of use of My Number Card by My Number Card, E-Certificate, Personal Identification Number Notice, Notification Card or lost or stolen
    • Languages: English, Chinese, Korean, Spanish, Portuguese
      • Reception hours: 8:30 am to 8:00 pm
        *Temporary suspension is available 24 hours a day.
    • Languages: Thai, Nepali, Indonesian, Vietnamese, Tagalog
      • Reception hours: 9:00 am to 6:00 pm
    • 0120 0178 27 (Toll free)

Inquiries about corporate numbers

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