Register your Number with Carriers (US Numbers only)

Reduce the risk of having your number marked as "spam" and getting blocked.

Hannah Chun avatar
Written by Hannah Chun
Updated over a week ago

Even customers with legitimate voice business sometimes report that their outbound calls get marked as "Scam likely" or other labels that result in calls not being answered and even blocked.

One way to reduce this risk is to register your number with each of the carriers or their call analytics providers. By doing so, you will let them know you and your business are legitimate and that your customers are expecting your calls.

Registering your number will solve "mislabeling" but it is not a guaranteed whitelist. Registered numbers can still be flagged again if certain call patterns are detected inconsistent with registered usage OR if your contacts file spam and fraud reports against your number. Possible reasons on why your phone number are flagged:

  • The calling number has a low answer rate from end users

  • The calling number generates low-duration calls

  • The calling number is responsible for large volumes of unwanted calls


To reach the major mobile carrier's analytic providers, please register the telephone numbers at www.freecallerregistry.com . To reach T-Mobile's analytic provider directly to register numbers, please go to www.calltransparency.com to register numbers. Going direct to the analytic provider has a faster turnaround of being registered / call being delivered to end user
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3 key practices in removing and keeping your numbers free from mislabeling:

  1. Register your numbers for free to each carrier (links below)

  2. Ensure you have complied with all relevant laws, regulations, and policies

  3. Stay consistent in your calling behaviour by phone number

    1. Avoid unusual spikes in traffic volumes, when possible

Carrier

Links

T-Mobile (via First Orion)

Verizon, Sprint & US Cellular

(via TNS Call Guardian)

ATT Wireless

(via Hiya)

Other Major US Carriers

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