CNAM Database Facts: 5 Things Every Business Should Know

A recent survey found that 45% of customer service and telemarketing organizations were cited for displaying incorrect Caller ID information over a three-year span — a significant amount of lost customer trust. Understanding how CNAM databases work is essential to protecting brand reputation on outbound calls.

1. What is a CNAM database?

CNAM stands for Calling Name Presentation, used on US telephone networks to identify the calling party — most often displayed as part of Caller ID. A CNAM database stores the caller's name, address, and related information tied to a phone number, and the terminating carrier is responsible for delivering that information to its customer, typically for a fee of $0.002 to $0.006 per lookup.

2. How storing your numbers helps your business

Storing your telephone numbers in the CNAM database keeps your displayed name accurate, so prospects and customers know who's calling and trust builds instead of eroding. It also reduces the odds that a legitimate call gets mislabeled as spam or telemarketer.

3. Caller ID vs. CNAM

Caller ID is the phone number itself; CNAM is the name associated with that number, and the two are delivered through different mechanisms. When a call comes in, the recipient's local carrier performs a CNAM "dip," looking up the name tied to the calling number from the CNAM database.

4. How the database actually works

Data submitted to the Line Information Database (LIDB) is maintained by a customer's carrier, and most incumbent and competitive local exchange carriers provide access. Caller ID name information isn't transmitted from the originating office — it's retrieved by the terminating carrier via a database lookup, at wholesale rates typically running $200 to $600 per 100,000 lookups. Storing outbound numbers in CNAM is a standard tactic among call centers and telemarketing companies to reduce the odds of erroneous blocking or labeling, since CNAM databases are updated daily to keep information current.

5. The Quality Voice & Data advantage

QVD provides a full suite of telecom services — toll-free numbers, SMS/MMS messaging, Local Caller ID numbers, Monitoring and Remediation, Elastic SIP Trunking, and VoIP phone systems — backed by the ability to digitally sign and deliver calls with full attestation. We also offer a free CNAM database lookup so businesses can check their own caller details without guessing whether the information is accurate.