Register your number with the major caller ID reputation registries
AT&T, T-Mobile, and major apps use a 3rd party company to manage the reputation and verification of business caller ID. please follow the guides for each and check pack periodically as we may add new registration databases as they become available.
Verizon Wireless: Verizon maintains an independent database for their Call Filter App
Calling parties and customers who believe a call has been mislabeled as spam or blocked may provide feedback via the link below
T-Mobile: The First Orion Portal (formerly known as Call Transparency) handles T-Mobile SPAM apps. There you Register your numbers to your business. They may call them to confirm they can reach the company name you provided. Make sure all of the numbers you submit, go to a welcome recording, IVR, voicemail or human that will say your company name for them to hear and confirm.
AT&T Wireless: AT&T and their apps use the Hiya 3 company to manage the reputation and verification of business caller ID.
On the site You will open a support ticket and provide a website that lists those numbers for you company
they use a web crawler for numbers must be in text / html and not a picture. For multiple numbers you will need a phone directory that lists each user or phone number you want to verify.
Free Caller Registry: First Orion, Hiya and Transaction Network Services (TNS) have designed a streamlined telephone number registration process for businesses, non-profits, first responders, and other call originators. Legitimate entities will now have access to a single, unified registration process with the analytics services that support the major wireless carriers in the United States, impacting more than 200 million mobile subscribers.