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Inquiries about My Number Card

Please refer to the FAQ page for more information.

Last update date April 16, 2024

Inquiries about the My Number System in general

My Number Comprehensive Toll Free Number
Phone number

0120-95-0178
※If you are unable to connect via IP phone, please call the following number. (charged)

  • 050-3816-9405 (My Number System, Minor Portal)
  • 050-3818-1250 (My number card, digital certificate, temporary suspension of use due to loss or theft)
Reception contents

If you call the toll-free number, follow the voice guidance and select the menu of the information you want to hear.

  1. My Number Card, Digital Certificate
  2. Lost or stolen My Number Card
  3. My Number System / Corporate Number
  4. Digital certificates for minor portals and smartphones
  5. Use of my number card insurance card
  6. Account registration system for public money received
Reception hours
  • Weekdays: 9:30~20:00
  • Saturdays, Sundays, and holidays: 9:30~17:30

※Temporary suspension (voice guidance No. 2) due to loss or theft of My Number Card is accepted 24 hours a day, 365 days a year.

FAQs

https://www.kojinbango-card.go.jp/faq/ (external site)

Inquiry Form https://www.kojinbango-card.go.jp/contact/inquiry/ (external site)
FAX number

0120-601-785 (only for the hearing impaired)
Please refer to the following link for inquiries.
https://www.kojinbango-card.go.jp/contact/fax/ (external site)


Inquiries regarding the receipt of my number card and renewal of digital certificates

Dial for exclusive use of Yokohama City My Number Card
Phone number

0120-321-590
※IP phone, etc.: 045-550-5454 (charged)

Reception hours
  • Weekdays: 8:30~20:00
  • Saturdays, Sundays, and holidays: 9:00 to 17:30 (New Year holidays are also accepted)
Manned chat https://mncardrsv.city.yokohama.lg.jp/guestchat (outside site)
FAX number

045-350-8484 (only for those with hearing or language disabilities)

Others

For the following information, please contact your ward office, Family Registry Division Registration Section.

  • Application status of my number card, dispatch status of grant letter of advice
  • Request for reissue of delivery notice (postcard)
  • Those who have lost their reservation ID for receiving My Number Card or renewing their digital certificate
  • About identity verification documents that can be used when receiving my number card (documents other than the documents listed on the receipt page)
  • Documents that can be used as documents proving that the person required to receive My Number Card by proxy/agent cannot come to the Agency
  • If you would like to consult directly with the ward office

Reception hours

Weekdays: From 8:45 a.m. to 5 p.m.
2nd and 4th Saturday: From 9 a.m. to noon
※Calls may be difficult to connect between 12:00 and 14:00 on weekdays and on the second and fourth Saturday.

Phone number of each ward office, Family Registry Division Registration Section
Ward Office Phone number
Tsurumi Ward Office 045-510-1705
Kanagawa Ward Office 045-411-7037
Nishi Ward Office 045-320-8335
Naka Ward Office 045-224-8299
Minami Ward Office 045-341-1118
Konan Ward Office 045-847-8335
Hodogaya Ward Office 045-334-6234
Asahi Ward Office 045-954-6161
Isogo Ward Office 045-750-2345
Kanazawa Ward Office 045-788-7734
Kohoku Ward Office 045-540-2254
Midori Ward Office 045-930-2254
Aoba Ward Office 045-978-2233
Tsuzuki Ward   Office 045-948-2255、2256
Izumi Ward Office 045-800-2345
Sakae Ward Office 045-894-8345
Totsuka Ward Office 045-866-8335
Seya Ward Office 045-367-5645、5646

For inquiries to this page

Civic Affairs Bureau Contact Service Dept.

Phone: 045-671-2176

Phone: 045-671-2176

Fax: 045-664-5295

Email address: sh-madoguchi@city.yokohama.jp

Return to the previous page

Page ID: 911-945-575

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