Thank you for using NTT Communications Business Portal.
We have changed the authentication method of Business Portal from 1-step verification to 2-step verification according to a lot of requests from our customers for stronger security at April 24th in 2018.
If you have not set up 2-step verification, please set the new authentication method by resetting password from login page.

1. The period when the authentication method can be changed

March 4th to April 24th in 2018
(Users could not login with 1-step verification after the end of the period)


2.Maintenance window for this changing

March 3rd 15:00 – March 3rd 20:00(UTC)


3.About new authentication method (2-step verification)

2-Step Verification requires you to enter a unique security code in addition to your password when you sign in Business Portal.

We provide the TOTP authentication or the MailOTP authentication as a second verification.
The authentication method that can be selected depends on your authority.
-Portal Admin can select the TOTP authentication or the MailOTP authentication.
-General User is set to the TOTP authentication automatically.
*Only portal Admin can change the setting of the second verification to the MailOTP authentication. Please see here.

* Please make sure that your registered mail address could receive e-mail in case that you select the MailOTP authentication.

3-1.What’s TOTP authentication(Time-based One Time Password)

You could get the verification code via the authenticator app in your devices like a smartphone and a tablet. You should install the authenticator app like Google authenticator, Microsoft authenticator etc. on your devices.

3-2.What’s the MailOTP authentication (Mail One Time Password)

You could get the verification code via e-mail to your mail address after first verification.

4. How to set up the authentication method

Please refer to the following URL to set up the authentication method.

Portal Admin User

General User


5. Contacts about this change

If you have any questions about this change, please contact us by creating ticket in Business Portal. If you could not know how to create ticket, could you refer here.

If you could not log in to Business Portal due to forgot your information for identity verification, please refer the FAQ about this.