Your reps are dialing the same lists they always have, but fewer people pick up. Often the cause is a label on the caller's screen: "Spam Likely", "Scam Likely" or "Potential Spam". Most people don't answer a call that says that, so a flagged number can cut your answer rate in half overnight.
The label isn't permanent, and it isn't a legal finding. It's a score, and it moves when the number's behavior changes. Start by finding out which carriers flag you, then ask for a review and fix whatever caused it.
Why business numbers get flagged
Each major US carrier pays an analytics company to score incoming calls. The engines never hear the call. They only see how the number behaves.
Picture five reps sharing one caller ID and making 600 calls a day between them. Most calls go unanswered, and plenty of the answered ones end within a few seconds. A couple of people tap "Report spam". From the outside, that number looks just like a robocaller.
Those are the usual triggers: a lot of calls from one number, many very short calls, a low answer rate, and complaints to the carrier, the FTC or the FCC. A brand-new number that jumps straight to full volume gets flagged too, because it has no history to vouch for it. A legitimate team calling opted-in leads can trip every one of these without doing anything wrong.
Check your number on each carrier
Each carrier uses a different engine, so a number can be clean on one network and flagged on another. The simplest test is to call a phone on each network from the number and look at the screen. Free lookup sites exist, but they mostly check complaint databases, not what a carrier is actually showing.
| Carrier | Analytics engine | What people see | Where to ask for a review |
|---|---|---|---|
AT&T | Hiya | Spam Risk, Suspected Spam | Hiya's business registration and feedback form |
Verizon | TNS | Potential Spam | TNS's caller reputation form, or Verizon's feedback page |
T-Mobile | First Orion | Scam Likely, Spam Likely | First Orion's call-labeling dispute form |
All three at once | Free Caller Registry submits your numbers to all three engines | freecallerregistry.com | |
The engines don't publish how long a review takes. Teams commonly report anywhere from a few days to a few weeks.
Get the label reviewed, step by step
- Register every number you call from with the Free Caller Registry. It's free and covers Hiya, TNS and First Orion in one form. Use the same business name and details each time.
- File a direct review with each engine that flags you. Explain who you are, who you call (for example, people who requested a quote) and how many calls a day the number makes.
- Set up your caller name (CNAM) so people see your business name instead of a city or "Unknown". Your phone provider submits it, and it shows once carriers next refresh their records.
- Fix the pattern that caused the label. If you don't, the number will be flagged again within days of being cleared. See the next two sections.
- Rest the number while you wait. Keep calling from clean numbers and let the flagged one sit quietly.
What doesn't work
Buying a batch of fresh numbers and burning through them feels like a fix, but new numbers at full volume get flagged quickly, and carriers watch for number cycling. You end up with more flagged numbers, not fewer.
Skip anyone who charges to remove the label. No outside company controls the engines' scores, and registering your numbers is free.
STIR/SHAKEN won't clear it either. It signs a call to show it really came from your number, which helps carriers trust you, but a signed call can still be labeled spam.
Keep new numbers clean
The fix is to make each number look like a normal business line.
- Cap calls per number per day. There's no published threshold. A common rule of thumb is to keep each number under 50 to 100 outbound calls a day.
- Use a pool of local numbers. Spreading calls over several local business phone numbers in the areas you call keeps each one's volume low and its answer rate higher.
- Warm up new numbers. Start a new number on a few calls a day and raise it over a week.
- Watch answer rate per number. A sudden drop is usually the first sign of a label, often before anyone tells you.
- Call people who expect you. Fresh, opted-in leads answer more and report less.
How Adoptiv handles it
Adoptiv checks every number in your caller ID pool daily and gives it a 0 to 100 health score from its answer rate, complaints filed against it and its STIR/SHAKEN attestation. A number is flagged when its answer rate halves, when 40% or more of answered calls hang up within six seconds, or when it collects two complaints in 30 days. A flagged number rests for seven days while a clean spare takes its calls, and new numbers ease in over a week. Dialer Plus includes 25 caller IDs per seat, and smart caller ID picks the number each contact is most likely to answer. See caller ID reputation and smart caller ID.