CNAM (Caller Name) is the business name, up to 15 characters, that a US carrier can look up in a shared database and display when your call arrives. It is the oldest and cheapest way to show your company name on outbound calls, and it has one big limit: most mobile phones never show it.
That limit is why so many sales teams register their CNAM, test a call to their own iPhone, and see nothing but a number. This guide explains how CNAM actually works, how to register it, why it fails on mobile, what changed with STIR/SHAKEN and Rich Call Data, and when it is worth moving to branded caller ID.
What is CNAM, exactly?
When you place a call in the US, the network carries your phone number to the recipient, not your name. The name is resolved at the other end. Here is the sequence:
- Your provider registers a name against your number in a CNAM database (sometimes called a LIDB or CNAM storage).
- Your call reaches the recipient’s carrier with your number attached.
- The recipient’s carrier may run a CNAM dip: it queries a database with your number and gets back the stored name.
- The phone displays the result, usually in uppercase, truncated to 15 characters.
According to Telnyx’s documentation, a CNAM holds “up to 15 alphanumeric characters and blank spaces”. If no name is found, the carrier may show the city or rate center of your number instead. Canada works differently: it has no national CNAM database, so the name is passed in the call signaling and the receiving carrier decides what to do with it.
Two consequences matter for sales teams:
- You control the registration, not the display. You can register “ACME SALES” correctly and still have it ignored by the carrier on the other end.
- 15 characters is tight. “Acme Industrial Solutions” becomes “ACME INDUSTRIAL”, or worse. Pick a short, recognizable form of your brand.
How do you register or change your CNAM?
CNAM is set by the provider that holds your phone number. In practice:
- Find the setting. Most business phone providers have a “Caller ID name” or “CNAM” field in the number settings. Others handle it through a support ticket.
- Enter your name within 15 characters. Use your company name, not a person’s name or a slogan. Some providers require at least one non-numeric character.
- Wait for propagation. Telnyx states that values usually reach the database within 12 to 24 hours and can take up to 72 hours; for numbers held by an underlying carrier, it takes 3 to 5 working days.
- Test from several carriers. Call a landline, a desk phone and phones on Verizon, AT&T and T-Mobile. Write down what each one shows.
Why doesn’t my business name show up on mobile phones?
This is the question behind almost every CNAM support ticket. Three reasons:
1. The receiving carrier pays for the lookup. Each CNAM dip has a cost for the terminating carrier, so many do not run it on every call. Dialpad’s help center notes that many carriers do not “dip” very often for that reason.
2. Wireless carriers mostly ignore the CNAM service. Telnyx states it plainly: wireless carriers generally do not use the industry CNAM service, and the only reliable workaround is for the recipient to save your number as a contact. Some carriers instead offer caller name display for unknown numbers as part of their own spam protection apps, which the recipient has to enable.
3. Spam analytics win over names. When the carrier’s analytics partner (Hiya, First Orion or TNS, depending on the network) decides your number looks like spam, the label takes the slot your name would have used. We cover how those labels work in why your business number is marked spam.
The result: on a desk phone your CNAM often shows up; on a smartphone, which is where most of your B2B prospects now answer, it frequently does not.
CNAM vs branded caller ID: what’s the difference?
Branded caller ID is the answer the industry built to CNAM’s mobile problem. Instead of a text label sitting in a database, the business is verified, and its name, logo and call reason are delivered to mobile phones through carrier partnerships or through Rich Call Data (RCD), the extension of STIR/SHAKEN that carries caller identity alongside the signed call.
| CNAM | Branded caller ID | |
|---|---|---|
| What is displayed | Text name, up to 15 characters | Verified name, often logo and call reason |
| Identity check | Generally none | Business verification (KYC) |
| Where it shows | Mostly landlines and desk phones | Smartphones on supported networks |
| Who decides | Receiving carrier, per call | Carrier and device support |
| Pricing model | Usually bundled with the number | Monthly plan or per branded call |
| Example price | Often free to register | From $31/month for 250 calls (First Orion) or $0.14/call pay as you go (Hiya) |
Prices checked on November 5, 2026 on First Orion’s pricing page and Hiya’s pricing page.
The industry standard for branded calls over STIR/SHAKEN is CTIA’s Branded Calling ID (BCID), which Numeracle, NumHub and others use to deliver RCD. Carrier support is still uneven: Twilio wrote on October 5, 2026 that its branded calling reaches T-Mobile and Verizon, with AT&T still in pilot. We compare the main providers (Hiya, First Orion, TNS, Numeracle) and their published prices in our branded caller ID providers guide.
What is the FCC doing about caller names?
Regulators have been circling the question for two years:
- February 27, 2025: in its Eighth Report and Order on call blocking, the FCC decided it would be premature to mandate the display of Rich Call Data, while encouraging the industry to keep deploying it and leaving the door open to a future mandate.
- October 2025: a Further Notice of Proposed Rulemaking (FCC 25-76, published in the Federal Register on December 5, 2025) asked whether certain providers should be required to transmit verified caller identity, such as caller name and possibly logo and call purpose, through RCD and display it on handsets.
As of November 5, 2026, verified caller name display is not mandatory. If the proposal becomes a rule, branded display could become far more common, and the gap between CNAM and branded caller ID would narrow. For the calling rules that do apply to sales teams, see our summary of the TCPA changes of November 2026. Nothing in this article is legal advice.
Is CNAM worth setting up for a sales team?
Yes, because it costs almost nothing. But set your expectations:
- Do it for every number your reps call from. Ten minutes per number, often free.
- Don’t expect a jump in connect rate if your prospects are mostly on mobile. CNAM alone rarely changes what a smartphone shows.
- Check what your provider registers by default. If the field is empty or holds a name that is not yours, such as a reseller’s, fix it before you scale up dialing.
- Fix reputation first. A number labeled Spam Likely will not be rescued by its name. Keep volume per number reasonable; our phone number rotation calculator tells you how many numbers your team needs.
Branded caller ID starts to make sense when your team places hundreds of calls a day to mobile numbers and your brand name itself is a reason to pick up. The math is simple: at $0.14 per branded call, 3,000 calls a month cost about $420. If branding brings even a handful of extra conversations, check what those conversations are worth with our cost per meeting calculator.
How to get recognized when no name shows
When the screen shows only a number, three habits do the job CNAM cannot do:
- Keep a stable number per rep. A prospect who has heard from you once may save your number. Rotate only as much as volume requires.
- Leave a voicemail that says your name and company. It is the one place your identity is guaranteed to reach the prospect. With Skipcall’s pre-recorded voicemail drop, reps drop a polished message in one click; our B2B voicemail scripts give you wording that works.
- Send a short SMS after a missed call. “Hi Dana, Sam from Acme here, just tried you about…” ties your number to your name. Skipcall sends SMS from the same number as the call.
On iPhones running iOS 26, unknown callers can be asked to state their name and reason before the phone rings. A clear one-line introduction then works like a caller name. More in our guide to cold calling and iPhone call screening.
Where Skipcall fits
To be clear about it: Skipcall does not sell CNAM services or branded caller ID. Skipcall gives each rep local numbers in 14 countries, including the US (no paperwork required) and Canada, with power and parallel dialing, voicemail drop and SMS from the same number. If you need a particular caller name registered on a Skipcall number, or a new number or area code, ask the Skipcall team through the chat. If you subscribe to a branded caller ID provider, you can register the numbers you use with them, subject to that provider’s terms. Plans are on the pricing page.
What to remember
- CNAM is a 15-character caller name stored in North American databases and looked up by the recipient’s carrier, at that carrier’s discretion.
- Register it through your number provider: 12 to 72 hours in most cases, never on toll-free numbers.
- Mobile phones often ignore it, because wireless carriers generally do not use the industry CNAM service.
- Branded caller ID delivers a verified name, logo and call reason to smartphones on supported networks, from about $31 a month or $0.14 per call (published prices, November 5, 2026).
- The FCC has not mandated caller name display, but proposed it in October 2025.
- No name beats a bad reputation. Clean numbers, a voicemail that names you and a follow-up SMS still do most of the work.
