How to stop your sales calls showing as Spam Likely

You stop the "Spam Likely" label by fixing three things in order: register your outbound numbers with the analytics companies that feed the carriers (First Orion, Hiya and TNS, free at freecallerregistry.com), remove the calling patterns that trigger the label (burst dialing, repeated short calls, dead air after pickup), and dispute any wrongly flagged number through the carrier-specific appeal route. Buying new numbers and dialing harder on them is the one move the analytics vendors say makes it worse, because reputation scoring now tracks your enterprise across its numbers, not just each number separately (Hiya, February 24, 2023).

We run an outbound dialing platform (CallCloud), so we deal with this every day. Everything below is what we have learned fixing it, with sources.

The short checklist

Register every outbound number at freecallerregistry.com (free, one submission reaches First Orion, Hiya and TNS, announced at launch February 22, 2021).
Ask your carrier or SIP provider for full STIR/SHAKEN A attestation on your numbers. It authenticates that you own the number, nothing more.
Remove dead air: have a live rep on the line the moment the prospect answers. "Delay during call connection" is a reputation signal Hiya names explicitly in its caller reputation guide.
Cut burst dialing, redial storms and very short calls. First Orion's December 11, 2025 guidance names all three as nuisance-label triggers.
Keep numbers stable. Do not rotate to evade a label. Hiya warns that frequent rotation looks suspicious and scores your enterprise's history across all its numbers.
Check your actual display across AT&T, T-Mobile and Verizon (see the checking section below), and file the carrier-specific dispute if a number is flagged.
Only then consider paid branded calling, as a pilot, not as a fix.

This article is general information about how spam labels work, not legal advice.

Who actually puts the label on your calls?

The label comes from your recipient's carrier, fed by an analytics company. The established pairings are T-Mobile with First Orion, AT&T with Hiya, and Verizon with TNS. These relationships are named in an Enterprise Communications Advocacy Coalition filing at the FCC, and Hiya confirms AT&T uses its data. The wording differs by carrier:

Service	Wording you might see	Analytics layer
T-Mobile Scam Shield	"Scam Likely" for likely scams, "Potential Spam" for unwanted solicitation	First Orion
AT&T ActiveArmor	"Spam Risk", with categories like "Telemarketers" and "General spam"	Hiya
Verizon Call Filter	"Potential Spam"	TNS
Google Phone	"Suspected spam caller" or "Spam"	Google, with carrier data
Samsung Smart Call	"Suspected to be spam", "Potential fraud"	Hiya (Samsung says so on its own page)

The distinction that saves you hours of guessing: a label, a block and a screen are three different problems with three different fixes. A label ("Spam Likely") is a reputation classification by the analytics layer. A block is the carrier refusing to complete the call, which has its own FCC dispute process. A screen is the handset itself, and Apple and Google both now screen unknown callers without any carrier label involved. Apple's September 14, 2026 instructions let an iPhone ask an unknown caller for their reason for calling before it rings, and Pixel Call Screen answers and questions the caller before your prospect hears anything. If your calls ring, get screened and never connect, that is handset screening, not a spam flag. Diagnose the layer first, then fix that layer.

What the label is made of

The analytics companies do not publish a scoring formula, and First Orion told Congress in 2018 that no single data point causes a Scam Likely classification. But their own guidance names the ingredients:

Volume, frequency and duration of calls (Hiya's reputation guide lists all three).
Very short calls right after answer (First Orion's 2018 testimony and its December 2025 guidance both flag this).
Burst dialing and redial storms (First Orion, December 11, 2025).
Recipients blocking you or reporting spam (Hiya names this directly).
Delay between the prospect answering and a human speaking (Hiya's "delay during call connection").

The two signals most outbound teams create without noticing are short calls and dead air. If your dialer answers, plays a second of silence while it connects the rep, and the rep hangs up on voicemail four seconds later, you have manufactured both. TNS's credit-union case study (November 2025) describes exactly this mechanism: a legitimate fraud-alert autodialer making "many short calls in bursts" that resembles spam in volume and pacing, with around 80-90% of the credit union's outbound calls flagged.

That case is also the clearest evidence that a legitimate purpose does not clear a label. Reputation models score behavior, not intent.

How to check whether your numbers are flagged

Test on real devices, not on assumptions. The practical method:

Call a handful of prospects' mobiles (with their knowledge) or your own test phones on each major carrier, and record exactly what displays, on which device, on which network.
Hiya offers free registration plus a reputation report card through its Caller Reputation product (announced September 30, 2025, free with registration).
First Orion sells AFFIRM, which runs validation calls and reports the actual display across AT&T, T-Mobile and Verizon.
TNS sells reputation monitoring with flag alerts.

Hiya shows you Hiya's view, First Orion AFFIRM shows you the actual carrier display, TNS monitors flags. What you want to know is what your prospects' phones show, so a validation-call product is closer to ground truth than a single vendor's dashboard.

The fixes, ranked by evidence

Register your numbers (free, do this first)

Free Caller Registry accepts one registration and passes it to First Orion, Hiya and TNS. The three companies announced the registry on February 22, 2021, and each independently vets the submission before communicating directly with you. Registration is free and it is not a universal whitelist: Hiya's own registration page says registration does not prevent every spam label, and registration alone does not put your business name or logo on the call, which requires branded calling.

Hiya's timelines for the registration process itself: business verification can take up to 24 hours, number vetting under a day, and propagation several more days. Those are registration times, not label-removal promises.

Get A attestation, and know what it does not do

STIR/SHAKEN signs your caller ID so the carrier can verify the call really came from your number. Attestation has three levels:

Level	What it means
A (full)	The provider knows you and your right to use the number
B (partial)	The provider knows you but not your relationship to the number
C (gateway)	The provider is transiting a call it cannot authenticate, typical at international gateways

A attestation is an identity claim, not a delivery guarantee. Bandwidth's explainer (June 4, 2025) says explicitly that A-signed calls can still receive spam labels, because the analytics layer scores whether the call is wanted, and authentication says nothing about wantedness. Ask your provider what attestation your numbers get and how number authorization is verified.

Remove the dead air and short-call patterns

This is the fix with the strongest vendor evidence behind it. First Orion's December 2025 guidance says appeals and registration give short-lived relief if the underlying short-call and burst patterns continue. Hiya's guide names connection delay and recommends a live agent immediately available. Spam models still consider calling behavior and complaints even for businesses that buy branding, so no amount of registration or branding compensates for the pattern.

The measure we use on our own fleet is the six-second line: what share of your connected calls run past six seconds, and what share of pickups hang up within six seconds of the carrier's answer event. If a large share of your pickups end inside six seconds, your dialer is training the analytics layer that your calls are junk, whatever your script says.

On our fleet (outbound dials across CallCloud workspaces, 90 days to September 4, 2026), 98.7% of connected conversations run past six seconds, 2.6% of pickups that reached a rep ended within six seconds, and median talk time is 30 seconds. The reason is mechanical: in the CallCloud Parallel Dialer the rep sits on a live audio bridge for the whole session, so the answered line joins at a median 22 ms, before the prospect finishes the word "hello" (our zero-lag page has the measurement). The rep is already there when the prospect picks up, so there is no silence window after pickup to flag (how we measure it).

Volume, caps and rotation

The vendors recommend spacing and restraint but publish no universal daily cap, so ignore anyone selling you a magic number. Set your own per-number cap from your outcomes. Hiya warns that frequent number rotation can look suspicious, and its Enterprise Caller Scoring (February 24, 2023) was built specifically to score an enterprise across its numbers rather than treat each fresh number as a clean slate. First Orion recommends monitoring every number and campaign, and warns against bursts.

We rotate for a different reason than evasion: to spread load. Our seats default to a daily cap of 75 dials per number, and spread dials across a pool of local numbers so no single number carries a spike. The defense is that a number whose answer rate collapses gets rested automatically and returned after a cooldown, and a number that gets externally flagged is pulled from rotation entirely.

Dispute flagged numbers through the right route

First Orion's support material lists the carrier-specific routes (checked October 23, 2026):

Free registration for all three providers: freecallerregistry.com
First Orion business registration: First Orion portal
Hiya registration and reputation: Hiya number registration
AT&T / Hiya appeal: Hiya redress form
T-Mobile / First Orion appeal: First Orion appeal form
Verizon route listed by First Orion: voicespamfeedback.com

Attach number ownership documents, your business identity, timestamps, destination carrier and screenshots of the actual display. Track which layer failed: label, block, or screen. A blocked call is a different dispute: FCC rules (FCC 25-15, adopted February 2025, SIP 603+ provisions effective March 25, 2026) require carriers to return a 603+ response on analytics-based IP blocking, and FCC 20-187 (December 30, 2020) requires a 24-hour status update on a covered blocking dispute. That 24 hours is a status update, not a resolution deadline and not a label-removal guarantee, and the FCC order that created it expressly declined to extend the same redress to erroneous labeling. Labels go through the appeal routes above.

Our team files these disputes on customers' behalf as part of registering their numbers with all three analytics companies, which is included in every seat.

Branded calling, if you want to pilot it

Branded calling puts your name, logo and call reason on the recipient's screen before pickup. It is an identification tool, not a label cure, and coverage varies by carrier and device (Hiya says plainly that not every outbound call will be branded). Published prices, checked October 23, 2026:

Product	Published pricing
Hiya Connect branded calls	$99/month for 750 calls, $299 for 2,500, $550 for 5,000, $835 for 10,000, or pay-as-you-go from $0.14 per branded call with no minimum
First Orion INFORM	$31/month for 250 branded calls, $52 for 500, $104 for 1,000; the enterprise page shows a $1,200 monthly minimum covering up to 20,000 calls
TNS Enterprise Branded Calling	Quote only, no public price found

One vendor case worth knowing: a TNS case study (March 2025) reports Verizon's own call center sales line seeing a 25% answer-rate increase after deploying Enterprise Branded Calling. It is a vendor-reported before-and-after on one customer, not a controlled comparison, so treat it as a reason to pilot, not a promise. Test branding against your own baseline with your audience and cadence held steady.

Also worth knowing what died: Google's Verified Calls (launched September 8, 2020) was fully shut down on January 31, 2023 according to Exotel's support notice, so do not build around it.

What not to do

Do not burn through fresh numbers. This is the default instinct when answer rates drop, and it is the one the vendors specifically warn against.
Do not file appeals and change nothing else. Appeal the flag and fix the behavior that triggered it.
Do not treat a quiet phone as a clean phone. Screen your calls on real devices before you assume the fix worked.
Do not ignore the legal layer. B2B is not a blanket exemption: calls made with an autodialer or artificial or prerecorded voice to wireless numbers can still implicate the TCPA despite a business purpose, and marketing calls covered by those provisions generally need prior express written consent (47 CFR 64.1200). The FTC's 2024 TSR final rule also extends specific prohibitions on material misrepresentations to B2B telemarketing. Have counsel classify your dialing technology, number types and consent before you scale. Registration and attestation do not create permission to call.

How we handle it

Under 2% of our outbound numbers carry a spam flag (measured in a third-party spam-reputation sweep of CallCloud's outbound numbers, 90 days to September 4, 2026), and no number in the fleet has shown a collapsed answer rate. The defenses are in every seat, not a paid add-on: number registration with the three analytics companies and disputes filed for you, rotation across a pool of local numbers with a daily cap per number, per-number answer-rate monitoring that rests a weak number automatically, third-party flag monitoring that pulls a labeled number from rotation, and the live-bridge dialing that removes the dead-air signal entirely. We never run answering-machine detection on a live pickup, because that is the exact short-call pattern the analytics companies score against. Together, these make up CallCloud Shield.

The honest limits: we do not do predictive dialing for large contact centers, IVR routing, SMS campaigns, or a built-in contact database, and branded calling itself is a separate purchase from Hiya or First Orion. If you want to see the dialing side working, the Parallel Dialer is $125 per seat per month with unlimited US and Canada calling and a local number included, the Power Dialer is $60 per seat per month, both month to month with no seat minimum. You can start a free trial with no card, see pricing, or book a demo.

One context note for how you read the numbers: when you see statistics like Hiya's June 2026 finding that only 14% of consumers immediately answer an unknown number, remember what that measures. It is a survey of more than 12,000 consumers across six countries about unknown numbers, not a measured answer rate for spam-labeled US sales calls. An unknown number and a labeled number are different problems, and the first one you fix with registration and branding, the second with behavior and disputes.

FAQ

Does registering my number stop the Spam Likely label?

Not by itself. Registration gives First Orion, Hiya and TNS your business information, and each independently vets it. It reduces mislabeling and gets you into the dispute system, but Hiya says plainly that registration does not prevent every spam label, and First Orion says models still score your calling behavior.

How long does a dispute take?

Registration itself is fast: Hiya says business verification can take up to 24 hours and number vetting under a day. Label removal has no published deadline. The FCC's well-known 24-hour rule is a status-update requirement on blocked-call disputes, not a label-removal promise.

Does STIR/SHAKEN A attestation prevent spam labels?

No. A attestation proves your number was not spoofed, and A-signed calls can still be labeled as spam, because the analytics layer scores whether the call is wanted, not whether it is authenticated.

Should I just buy new numbers when mine get flagged?

No. Hiya's Enterprise Caller Scoring (February 24, 2023) scores your enterprise's history across its numbers, so fresh numbers do not start clean, and Hiya warns that frequent rotation itself looks suspicious. Register, dispute and fix behavior instead.

How many calls per number per day is safe?

No verified universal limit exists. First Orion recommends caps and spacing without publishing a number, and Hiya prioritizes interaction quality over volume. Set a per-number cap from your own answer-rate data and monitor it; CallCloud defaults to 75 dials per number per day with automatic rest for a number whose answer rate drops.

Why do my answered calls get flagged even though a human picks up?

Usually dead air or short calls. Hiya names "delay during call connection" as a reputation signal, and First Orion flags very short calls after answer. If your dialer puts a prospect on a silent hold while it hunts for a rep, or your rep hangs up on voicemail pickups within seconds, you are generating the exact pattern the analytics companies score as nuisance traffic.

Does CallCloud fix this for me?

The number-side defenses are in every seat, and together we call them CallCloud Shield: registration with the three analytics companies, disputes filed on your behalf, rotation, daily caps per number, automatic rest for weak numbers, flag monitoring, and live-bridge dialing with a median 22 ms connection, so there is no dead air to score. Branded calling is a separate purchase from Hiya or First Orion, and the calling behavior, your cadence and your list, stay yours to run well.