The following organizations all manage a DNO list. I would check with all of them to make sure your number is not on their list. 

Somos, (RealNumber)

ITG Industry Traceback Group

XConnect

NetNumber

First Orion

On 2026-01-19 04:29 PM, Dovid Bender wrote:

The question would be which list. We own the number and it's been in use for a while so I am not sure how it would end up on their naughty list.

 

On Fri, Jan 16, 2026 at 3:16 PM Mary Lou Carey <marylou@backuptelecom.com> wrote:

Have you checked to see if the number is on the DNO list? That's where I'd check first.
Sent from my iPhone

> On Jan 15, 2026, at 6:15 AM, Shripal Daphtary via VoiceOps <voiceops@voiceops.org> wrote:
> We had the same issue with a single number recently. Only on tmo.
>
> We are following the same process by having the customer open a ticket with firstorion and fill out the tns form.
> Thanks,
>
> Shripal
>
>> On Jan 15, 2026, at 3:00 AM, Dovid Bender via VoiceOps <voiceops@voiceops.org> wrote:
>>
>>
>> Hi,
>>
>> Has anyone had an issue where T-Mobile will play a message saying that a phone number is a scam? We have a hosted platform for non profits and it seems one of the numbers started having this issue. I wouldn't even know where to start or whom to contact. The org published the number recently and people call and then instantly hang up.
>>
>>
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