
Just over 3.8 billion robocalls reached U.S. consumers in February 2026, and about 2.16 billion were telemarketing or scam calls, roughly 58% of the total, according to YouMail's February 2026 robocall index. The most common trigger for a legitimate business is implausible per-hour calling velocity combined with low answer rates, not the organization's identity, so fix pacing, consent, number hygiene, and recipient expectation before rotating numbers or buying premium branding.
The number usually didn't become suspicious by accident. A team can trigger a scam likely label through an aggressive hourly burst, repeated attempts to the same person, poor answer rates, or a number that inherited a damaged reputation before the business ever used it.
The labels also have specific decision-makers. T-Mobile uses First Orion for Scam Likely, Verizon uses TNS for Potential Spam, and AT&T uses Hiya for Spam Risk. Those names matter because the vendor behind the label is usually the right place to appeal.
The operating checklist below covers voice, SMS, ringless voicemail, TCPA, CAN-SPAM, Do Not Call controls, HIPAA-sensitive communications, caller ID, STIR/SHAKEN, vendor management, and audit evidence. The central distinction is simple: STIR/SHAKEN helps prove who is calling, but it doesn't prove that recipients want the call.
1. Understand the Source of Scam Likely Labels
A Scam Likely label usually reflects calling behavior and reputation, not a mistaken judgment about your company's identity. Carrier analytics examine signals such as per-hour volume from one number, short-call patterns, complaint history, answer rates, and repeated attempts, as described by ESET's analysis of the spam-call crisis.
Daily volume alone is a weak diagnostic. A single number dialing faster than a person plausibly could can resemble automated or abusive traffic. Low answer rates may intensify the pattern. Teams often respond to missed connections with more attempts, creating more unanswered calls and complaints.
Practical rule: Treat each phone number as an operational identity with its own hourly capacity, answer-rate history, and complaint record.
A sales team that relies on one or two numbers while scaling outreach can enter a reputation spiral. Answer rates decline, representatives increase attempts to recover conversations, and analytics systems see stronger evidence of high-velocity, low-engagement calling. The company's identity may be unchanged, while its traffic now resembles the behavior those systems are designed to detect.
Measure behavior at the number level
Track each caller ID separately, rather than reviewing only campaign or account totals. Your dashboard should show:
- Calls per hour by number: Identify caller IDs carrying an implausible workload.
- Answer rate: A sustained decline should prompt pacing and targeting changes before adding attempts.
- Attempts per recipient: Several touches within a short window can resemble spam and generate complaints.
- Local-time scheduling: A burst at the same clock time across distant time zones can create a synthetic pattern.
- Complaint and opt-out events: These signals can outweigh a polished caller ID name.
Broadcast can support the operating process, but software does not erase a poor reputation. Set number-level limits, review engagement daily, suppress opt-outs immediately, and document consent before increasing volume. Recycled numbers also require a history check before launch because a previous user's traffic may affect the number's reputation.
The label is a reputation outcome, not a verdict on your company. Avast explains that warnings do not prove fraud, legitimate calls can be mislabeled, and some scam calls arrive without warnings. Respond with controlled pacing, clear recipient expectation, consent and compliance checks, and a direct appeal process instead of assuming a clean label proves safety.

2. Know Which Vendor Labeled Your Number and Appeal Directly
A carrier warning identifies the symptom, not necessarily the company that evaluated the call. T-Mobile's Scam Likely label is associated with First Orion, Verizon's Potential Spam with Transaction Network Services, and AT&T's Spam Risk with Hiya, according to Enzo Dialer's carrier and vendor breakdown.
That ownership determines where an appeal should go. A ticket to general carrier support may confirm that a warning exists without reaching the analytics vendor that scored the number. Test the same caller ID on lines connected to the relevant networks, capture the exact screen wording, and match each result to the appropriate vendor before submitting anything.
Submit evidence an analyst can verify
Build the appeal around recipient expectation and observable controls. Include the following:
- Exact label and carrier: Record whether the display says Scam Likely, Potential Spam, or Spam Risk.
- Ownership details: Provide the legal business name, website, contact person, and the number's assigned purpose.
- Calling behavior: Summarize pacing, answer rates, repeat attempts, and any recent campaign changes.
- Recipient context: State whether the call follows a quote request, appointment, event registration, service relationship, or another documented interaction.
- Compliance controls: Describe consent capture, Do Not Call suppression, opt-out handling, and applicable healthcare safeguards.
- Caller ID alignment: Confirm that the CNAM and displayed business identity match the organization recipients expect.
Use examples that explain the call without exposing unnecessary data. A healthcare provider can describe appointment reminders while excluding protected health information. A sales team can separate requested quote follow-up from unsolicited prospecting. An event organizer can connect reminder calls to registration records. Clear evidence of why the recipient expected the call is stronger than a general statement that the business is legitimate.
Send the appeal to First Orion for T-Mobile, TNS for Verizon, or Hiya for AT&T. Keep a record of the submission, the tested lines, the label shown, and any resulting change so later traffic can be compared against the same baseline.
A warning may disappear and return. Continue checking the label after an appeal, because a new burst of unwanted behavior or complaints can recreate the same reputation outcome. The appeal addresses vendor evaluation, not the operating conditions that produced it.
4. Send a Pre-Call Text to Improve Expectation
A pre-call text can make an expected conversation look expected to the recipient. It does not repair a poor calling history or turn an unauthorized campaign into a compliant one. Its value is narrower: it gives the recipient context before the phone rings and may reduce surprise-driven complaints.
For an existing relationship or clearly authorized follow-up, send a message such as “Following up on your quote request, calling from this number in ten minutes”. Identify the reason for contact, use the same number for the text and call, and schedule both close together so the context remains fresh.
Keep the wording accurate. A marketing call should not be presented as a service notice, and a text should not imply consent that was never provided.
Build the text into the call sequence
Set the workflow around these controls:
- Confirm permission and suppression status: A pre-call text must not bypass SMS consent or Do Not Call requirements.
- Use the recipient's local time: Prevent messages and calls from being triggered by a system configured only for the headquarters time zone.
- Wait briefly, then call: Allow enough time for the recipient to read the notice, without creating a long gap that separates the text from the call.
- Match the caller ID: Place the call from the number named in the text.
- Record the outcome: Log the message, delivery result, call attempt, answer, opt-out, and complaint.
Broadcast users can set up this sequence with an automated text messaging workflow, followed by a timed voice or ringless voicemail step. Its drip-campaign structure coordinates SMS and voice touches without requiring someone to launch each one manually. The workflow improves timing and documentation, but it does not replace consent records or suppression checks.

Use this approach when the recipient requested information, booked an appointment, registered for an event, opened a service conversation, or otherwise expects relevant contact. It can improve recognition and reduce surprise, while the business remains responsible for consent, message content, timing, and opt-out handling. A pre-call message supports good calling behavior. It does not create permission after the fact.
5. Use Free Caller Registry Across All Three Vendors
Register each business number before scaling outreach. The Free Caller Registry website provides one submission point for First Orion, Hiya, and Transaction Network Services, giving these analytics vendors information about the organization using the number.
Treat the registry as an ownership and context record, not a reputation repair tool. A registered number can still receive a warning when its calling pattern produces low answer rates, repeated complaints, or an implausible volume of attempts. Registration cannot make unwanted outreach appear expected.
Build registration into number setup
Submit the number after assignment and before the campaign expands. Save the submitted business name, website, phone number, caller ID configuration, and campaign purpose in the same operational record. Review that record when ownership, calling purpose, or business classification changes.
The registry supports two practical workflows. It gives vendors context for a number that might otherwise look anonymous, and it gives your team documentation when an appeal requires proof of legitimate use. It does not confirm recipient consent, validate every campaign, or replace pacing and suppression controls.
Keep these items together:
- Number assignment date: Record when the organization received the number and which provider supplied it.
- Business identity: Store the registered entity beside the displayed CNAM.
- Campaign purpose: Identify whether the number handles appointments, customer service, sales follow-up, events, or another use.
- Consent source: Connect the planned outreach to the relevant form, transaction, registration, or conversation.
- Vendor registration confirmation: Save evidence that submission completed successfully.
- Appeal history: Preserve vendor correspondence and the operational changes made after any warning.
Use the registry alongside, rather than in place of, caller identity controls. It differs from branded calling and STIR/SHAKEN because it records organizational ownership and registration context. A clean submission cannot repair repeated calls to people who did not request contact, and it cannot make an aggressive campaign look reasonable. Broadcast can use the record as part of a launch checklist, while consent, suppression, and calling behavior remain the team's responsibility.
6. Understand STIR/SHAKEN as Identity Authentication
STIR/SHAKEN verifies caller authorization. It does not decide whether the recipient expected the call or whether the campaign's behavior resembles abuse. Treating it as a complete answer to Scam Likely labels leads teams toward the wrong fix.
An A-level attestation indicates that the originating provider can authenticate the caller's authority to use the presented number. A strongly attested number can still receive a negative label after implausible dialing rates, repeated short calls, low answer rates, or complaints. LineShield's explanation of Scam Likely labeling draws the boundary clearly: attestation identifies the caller, while analytics assess whether the call appears wanted.
Separate the operating questions:
- STIR/SHAKEN: Is the caller authorized to use this number?
- Caller ID and CNAM: Which business identity should appear?
- Free Caller Registry: Which organization claims and explains the number?
- Analytics scoring: Does the call pattern resemble unwanted traffic?
- Consent and suppression controls: Should this person receive contact?
These controls work together, but none replaces the others. Authentication can reduce spoofing concerns and support a carrier's identity decision. It cannot make a sudden burst of unanswered calls look like normal customer communication.
The FCC's open proposal to tighten the requirements for A-level attestation could make pool-based dialing more difficult. The originating carrier would need to demonstrate that its customer is authorized to use each specific number. That direction supports a practical control: number pools should not hide poor calling behavior or provide a way to cycle through identities.
A VoIP number may be legitimate, authenticated, and poorly operated at the same time. Review what a VoIP number means for business calling, then assess number history, business identity, pacing, consent, and recipient response as separate checks. Broadcast can support the calling workflow, but attestation remains an identity control. It does not prevent every Scam Likely label because it cannot answer the wantedness question.
Scam Likely, 7-Point Comparison
| Item | Implementation Complexity | Resource Requirements | Expected Outcomes | Ideal Use Cases | Key Advantages |
|---|---|---|---|---|---|
| Behavior-based labeling (call velocity, answer rates) | Moderate, requires operational changes and monitoring | Team discipline, analytics to track per-number rates, more phone numbers as volume grows | Reduced labels over time if pacing and distribution improved; not instantaneous | Any high-volume outbound program scaling from a small number pool | Identifies root cause; guides effective operational fixes rather than workarounds |
| Identify vendor & appeal directly (First Orion, TNS, Hiya) | Low, investigative plus formal appeals | Time to identify carrier/vendor, documentation (answer rates, compliance proofs) | Faster, targeted delisting on vendor-controlled carrier(s); typical appeals latency | When a number shows a specific carrier label | Directs remediation to decision-maker; reduces wasted carrier support cycles |
| Check number/OCN history (block reputation) | Moderate, requires vetting providers and sourcing clean blocks | Due diligence with VoIP/wholesale providers; potentially higher-cost inventory | Avoid day-one labeling; more reliable deliverability when sourcing clean blocks | Procuring new or rotated numbers at scale | Preventative measure addressing inherited reputation rather than symptoms |
| Pre-call SMS notification (5–15 minutes before call) | Low, simple integration into SMS/voice workflow | SMS costs (fraction of a cent), automation or drip-campaign setup | Significant uplift in answer rates and lower complaint ratios; immediate effect | Warm outreach, appointment reminders, follow-ups to known contacts | Cheap, measurable improvement to both answer rates and complaint metrics |
| Free Caller Registry (single submission to all three vendors) | Very low, single short registration process | ~10 minutes; basic business information | Establishes ownership and eligibility for appeals; reduces "anonymous" classification but won't stop behavioral labels | Setting up any new business number before dialing | Free baseline legitimacy; speeds human review and appeals |
| STIR/SHAKEN attestation | Moderate–High, carrier coordination and verification | Carrier process/time; possible fees; attestation documentation | Improves caller authentication and anti-spoofing; does NOT prevent behavior-based labeling | Fraud prevention, regulatory compliance, authenticated caller ID needs | Provides verified identity and fraud protection; supports trust in caller ID |
| Vendor branded products vs. labels (conflict of interest) | Low to Moderate to adopt product; awareness is low-effort | Budget for premium products ($200–$5,000+/yr), integration, ongoing fees | Can expedite label removal or branded display on vendor-covered carriers; recurring cost and may not fix behavior | Businesses needing quick label removal or branded caller ID | Rapid whitelist/branded display and improved recipient trust, but costly and not a substitute for operational fixes |
Build a Campaign That Looks Expected
A durable fix starts before the first dial. Validate consent and Do Not Call status, then document the controls that apply to the campaign. For voice, that means addressing TCPA obligations and internal suppression procedures. For promotional email or related follow-up, document CAN-SPAM controls. For healthcare communications, separate useful patient reminders from promotional content and apply HIPAA safeguards where the communication involves protected information.
Use this order:
- Validate permission and suppression status. Confirm the source of consent, the intended purpose, and the current Do Not Call record.
- Verify number ownership and condition. Check the assigned number, provider, routing context, and any inherited reputation concerns.
- Register the number. Submit it through Free Caller Registry and save the confirmation.
- Align caller identity. Match CNAM, business name, website, message content, and the number used in any pre-call text.
- Obtain appropriate attestation. Use STIR/SHAKEN to support identity, but don't treat it as a wantedness score.
- Pace by number and local time. Spread calls across the recipient's reasonable calling window instead of creating synthetic bursts.
- Cap repeat attempts. A person who hasn't answered shouldn't receive an escalating sequence of tightly packed calls.
- Use clear content and opt-outs. Explain the reason for contact and honor requests promptly across voice and SMS.
- Set expectation where appropriate. A compliant pre-call text can help recipients recognize the number before it rings.
- Log every important event. Preserve consent, delivery, answer, opt-out, complaint, vendor, registration, and appeal records.
The SMS twin deserves the same discipline. A text from an unfamiliar number can create the same surprise as a voice call, and a message that hides its purpose or makes opting out difficult can damage the business relationship. Use text-to-join keywords, double opt-in, number validation, clear content, and suppression management for SMS. Don't assume that moving from voice to SMS, or from live calls to ringless voicemail, removes consent obligations.
Broadcast can support this workflow through double opt-in, text-to-join keywords, number validation, Do Not Call management, scheduling, click tracking, drip campaigns, analytics, and HIPAA-compliant communications. Its voice tools include caller ID controls, live and machine answer detection, press-1 transfers, recorded or text-to-speech audio, and suppression features. Teams can coordinate SMS, voice, and ringless voicemail with timed sequences, calendar triggers, appointment reminders, and campaign reporting.
Ringless voicemail changes the recipient experience because the message reaches the voicemail inbox, usually without interrupting the recipient with a conventional ring. It doesn't erase originating-number scoring. Short setup patterns, low answer activity, recipient complaints, consent, scheduling, message content, and audit evidence still matter, so ringless voicemail should follow the same governance as every other outbound channel.
A scam likely label is easier to prevent when the campaign looks expected from end to end. The number is owned, the identity is consistent, the recipient has a reason to expect contact, the pace resembles plausible human operations, and the organization can prove what happened after every message or call.
Broadcast gives you SMS, voice broadcasting, and ringless voicemail workflows with opt-in, validation, scheduling, Do Not Call controls, analytics, and coordinated drip campaigns. Visit Broadcast to build outbound campaigns that improve recipient expectation while keeping consent, pacing, caller identity, and audit records in the same operating workflow.

