Why is my personal number used by authenticator to call other people with their codes?

Sebastiaan Van Essen 1 Reputation point
2022-04-27T12:28:36.277+00:00

My coworker asked me why my number is showing on her phone as the number calling her for her code every day. It seems Microsoft is spoofing my number to call out. I am getting dozens of return calls every day and my coworker is confused every time she uses MFA and I come up as contact to call her with her code.

Microsoft Entra ID
Microsoft Entra ID
A Microsoft Entra identity service that provides identity management and access control capabilities. Replaces Azure Active Directory.
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  1. Vasil Michev 95,181 Reputation points MVP
    2022-04-27T16:55:28.423+00:00

    There's a setting within the Azure AD blade that allows you to specify the CallerID, so check for that:
    https://portal.azure.com/#blade/Microsoft_AAD_IAM/MultifactorAuthenticationMenuBlade/PhoneCallSettings/fromProviders/