Caller Name (CNAM) Lookup API
The caller-name record the carrier that holds a number publishes in LIDB — the name that appears on a landline caller ID. Strong on businesses and landlines. US mobile carriers largely publish nothing, and a blank answer says exactly that rather than pretending the number is unassigned.
This capability requires a connected data source and isn't available to run yet.
The carrier's own answer
One record, its source stated, and its limits stated with it
Published by the carrier
CNAM is written by the carrier that holds the number, which makes it authoritative for the numbers it covers rather than a best guess assembled from other sources.
An absent record is explained
US mobile carriers largely publish no CNAM, so a blank is the normal case on a mobile. We say that, because 'not found' would invite you to conclude the number is unassigned when it is not.
Not people-data
It answers who publishes a name for a number, not who a person is. There is no address, no relatives and no compiled profile, and there is not going to be.
Repeat lookups are free
A published name changes when a business changes its listing, which is rare. Results are held for a week, so checking the same number twice costs one lookup.
Where Caller Name (CNAM) fits
The workflows this capability is designed for once it's live.
Inbound screening
A number is calling and you have no name for it.
- Name the caller
- Spot the business
- Route the call
List enrichment
You hold business numbers and want the names behind them.
- Name the account
- Match to CRM
- Skip the unknowns
Claim checking
Someone says which business they are calling from. The carrier record says something.
- Compare the claim
- Flag mismatches
- Keep the evidence
Caller Name (CNAM) is coming soon
This capability requires a connected data source. Talk to our team about early access, volumes, and compliant use cases.