Authdog

d ACCOUNT

Last updated Aug 15, 2026
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d ACCOUNT is NTT Docomo's consumer identity in Japan, used across Docomo services and by partners that serve its subscriber base.

Copy the redirect URI

In the Authdog console, select the project and environment, open Authentication > Providers, find dアカウント (d ACCOUNT), and click Enable. Copy the redirect URI shown in the form:

https://identity.authdog.com/api/v1/callback/<connectionId>

Create the application

  1. Apply for d ACCOUNT OAuth credentials through NTT Docomo's partner programme.
  2. Provide Docomo with the redirect URI from Authdog for allow-listing.
  3. Copy the issued Client ID and Client Secret.

Configure Authdog

Field Value
Client ID The client identifier from the provider
Client Secret The client secret from the provider

Save, then toggle the connection active.

What d ACCOUNT returns

Authdog requests the openid profile email scopes and reads the profile from https://fw-ss.gw.docomo.ne.jp/daccount/userinfo.

The userinfo endpoint returns the OpenID Connect claims Docomo releases for the account, including the sub identifier and, where permitted, email.

Credentials are issued through a partner agreement rather than self-service registration, so plan the lead time into your rollout.

Test it

  1. Open your environment's hosted sign-in page, or link to https://identity.authdog.com/api/v1/signin/<connectionId>.
  2. Select the d ACCOUNT button and complete the flow.
  3. Confirm the user appears under Users in the console with a d ACCOUNT identity linked.

Troubleshooting

Symptom Cause
Authorization refused The redirect URI is not allow-listed on the issued credentials
Redirect or callback URL error The URI registered with the provider does not match Authdog's exactly
Works in one environment only Each environment has its own connectionId, and so its own redirect URI to register
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