Call blocked on Teams, however received a call on teams from the same number again.

Hello Team,

I did not find any exact reason as per the response; however, Caller ID spoofing could be the reason here.

Hi,

If you've already blocked a phone number in Microsoft Teams but are still receiving calls that appear to come from the same number, there are a few things that may be worth checking:

1/ Allow some time for the block to take effect:

To begin with, the timing can be important. If the number was blocked by your organization's IT administrator rather than from your personal Teams settings, it may take some time before the change is fully applied across Microsoft Teams.

2/ Check how the number was blocked:

Additionally, Microsoft Teams provides different ways to block calls. For example, users can block contacts directly from the Teams app, while organizations can also configure broader call-blocking rules at the company level.

If you're an end user and not responsible for managing Teams for your organization, you may not have access to these administrative settings. In that case, it could be helpful to check with your IT support team or Microsoft 365 administrator to confirm whether any organization-wide blocking rules are in place.

3/ Verify that the blocked number matches the incoming caller ID:

Another possibility is that the incoming call is being presented in a slightly different format than the number that was originally blocked. Because of this, the blocked entry may not match the caller ID exactly.

If your organization manages Teams centrally, your administrator may be able to review the configuration and confirm whether the incoming number matches the existing block rule.

4/ Consider the possibility of caller ID spoofing:

It's also worth noting that some unwanted callers can use caller ID spoofing. In these situations, the displayed phone number may look identical to a previously blocked number, even though the call itself is being routed differently behind the scenes.

As a result, the call could still appear to come from the same number despite a block being in place.

If you're using Teams as an end user, you can review your personal blocked list by going to:

Teams > Settings > Privacy > Edit blocked contacts

and confirm that the number appears there.

You may also want to enable the option to block calls with no caller ID, if that setting is appropriate for your situation.

If the issue continues, I would recommend contacting your organization's Teams administrator or IT support team. They may be able to review the call-blocking configuration in more detail and determine why the calls are still getting through.

For additional information, you can refer to the following Microsoft articles:

• Block inbound calls.
• Manage your call settings in Microsoft Teams.
• Configure spam filtering for calls in Microsoft Teams.

I hope this information helps point you in the right direction. Please feel free to share any updates or additional details, and I'll be happy to continue assisting you.

Kind regards,

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