Who This Is For / When to Use
Use this if recipients see only your phone number (or “Unknown Caller”) and you want your business name to appear on caller ID.
What CNAM Does
CNAM (Calling Name) displays a business name on supported US carrier caller ID systems.
Important limitations:
US only
Carrier-dependent
Not all recipients will see the name
Requires SHAKEN/STIR or A2P approval first
How CNAM Works with SHAKEN/STIR
SHAKEN/STIR verifies the call
CNAM displays the business name
CNAM does not replace Verified Caller ID
How to Register for CNAM
Step 1: Open CNAM in Trust Center
Go to Settings > Phone Numbers > Trust Center.
Select CNAM (Voice).
Click Start Registration.
Step 2: Review CNAM Preview
You’ll see a preview showing:
Before CNAM: number only
After CNAM: business name displayed
Step 3: Enter Business Name
Enter the exact business name (15 characters max).
Acknowledge the carrier limitation notice.
Click Confirm & Register.
Step 4: Submission Confirmation
After submission:
CNAM status is submitted
Display typically updates within 3–5 days
Common Issues and Fixes
Some Contacts Still Don’t See the Business Name
CNAM depends on the recipient’s carrier and plan.
Some carriers require caller ID features to be enabled.
Business Name Shows Incorrectly
Ensure the name matches your registered business.
Avoid special characters.
FAQs
Does CNAM guarantee name display?
No. Display depends on the recipient’s carrier and plan.
Do I need CNAM if I have Verified Caller ID?
Yes. Verified Caller ID does not display the business name.
How long does CNAM approval take?
Typically 3–5 days after submission.