Spam Likely calls: why your business number gets flagged and how to fix it

What do Spam Likely calls mean, and who puts the label there?

The exact words differ by carrier and by app. T-Mobile's label is "Scam Likely", and it also marks "Potential Spam" for unwanted sales calls. Verizon lists "Potential Spam", "Potential Fraud", "Robo caller" and "SPAM?" as its labels, and says a call marked differently, such as "SPAM LIKELY", was not labeled by Verizon. AT&T shows "Suspected Spam" with a category such as Telemarketer or Robocaller. "Spam Likely" is simply the name people search for.

The label comes from software, not from a person who looked at your business. Verizon says its labels rest on call analytics and that feedback goes to a third-party spam analytics provider. The FCC allows phone companies to block calls based on reasonable analytics designed to identify unwanted calls. AT&T says suspected spam is delivered with a warning as the caller ID name, while calls it judges to be fraud can be blocked, and the caller hears a busy signal.

Why do legitimate business calls get flagged?

Because the software looks at how a number behaves, not who owns it. In a 2019 ruling the FCC gave examples of what a blocking program might combine: large bursts of calls in a short time, low average call duration, low call completion ratios, a large volume of complaints about a line, sequential dialing patterns and neighbor spoofing patterns. Those were examples, not a full rulebook, but they show the kind of pattern that gets noticed.

Verizon names its own inputs: calling history and patterns, call volume, number recognition, network usage, known entity, and feedback from users. AT&T's terms say the numbers you report or block in its app may be used and shared with its analytics vendor. Both say mistakes happen. AT&T's terms say its service may block wanted calls or misidentify some numbers, and Verizon says its analysis keeps evolving, so a report may not change a label.

What is STIR/SHAKEN, and does it remove the label?

STIR/SHAKEN is the caller ID authentication system the FCC required phone companies to put in place on the internet-based parts of their networks by June 30, 2021. The FCC says it lets providers verify that the caller ID sent with a call matches the caller's number. Its aim is to cut spoofing, where a caller fakes the number shown on the screen.

A provider signs each call at one of three trust levels. The highest, full or A-level attestation, requires the provider to be responsible for putting the call on the network, to have a direct authenticated relationship with the customer, and to have a verified association with the number used. In our view, that is the practical reason to call from numbers your phone provider has confirmed you hold.

Verification is not approval. It says the number is real, not that the call is wanted. AT&T's own page notes that even when it validates a number, people can still use valid numbers for bad purposes. So a verified number can still earn a Spam Likely label if its calling pattern looks like spam.

How do I check whether my number is flagged?

Our opinion, not a carrier rule: the plain test is to have a few staff or friendly customers on different carriers look at their screens when your number calls, and write down the exact words and the carrier. The labels differ by carrier and app, so one clean result does not clear the rest. Keep the log. It tells you which carrier to contact and shows whether a review request worked.

Watch the answer rate too. A drop in answered calls on one carrier, with no change in how you call, is a hint that a label has appeared there.

How do I get a flagged number reviewed?

There is no single switch, so use each carrier's own route, in this order:

• Register your numbers with the free registry. Free Caller Registry is for businesses that call on their own behalf. You add numbers one at a time or by file, and each call protection provider acknowledges them. The registry says registering does not ensure a label is removed and is not a replacement for monitoring.
• T-Mobile. Its redress page points businesses to the free Call Transparency site, to register numbers and a name, and also to the registry above. A mislabeled call can be reported at callreporting.t-mobile.com.
• Verizon. Use its voice spam feedback form. Choose that your business makes legitimate calls, then list up to 50 numbers. Verizon says the form may not change how future calls are labeled.
• AT&T. Its address att.com/reviewmycalllabel forwards to a review request page of a call-analytics company. That page says a business should register its numbers first.

The FCC sets a floor. A phone company that blocks calls must publish one contact point for complaints, give a status update within a day on a caller ID dispute, charge nothing for a good-faith complaint, and stop blocking a number once it finds a credible claim of error. Check the current rule text, because the FCC updates it.

What habits keep a number from being flagged?

Our opinion, not a carrier rule. These flip the FCC's example factors above:

• Do not call in big bursts. Call leads who asked to hear from you as they come in, not a whole list at once.
• Aim for real conversations. A very short average call is one of the FCC's examples. Call people who want the call.
• Keep unanswered calls down. Clean your lists, and set sensible limits on redials.
• Do not swap in fresh numbers each time one is flagged. In our view that treats the symptom and hides the cause. CTIA's rule against spreading texts across many numbers to dodge filters is the closest published rule. Fix the cause and keep a few numbers you own.
• Call only people who agreed to hear from you. Complaints about a line are a listed factor, and reports count at AT&T.

A local presence dialer shows the person you call a number with their own area code. The FCC describes neighbor spoofing as showing a number like the called party's, using the same area code and exchange, to get an answer. It says spoofing is illegal when done with the intent to defraud, cause harm or wrongly obtain anything of value. In our view, a local presence setup should only show numbers that you hold and have registered.

Kojo OS handles local numbers, spam-flag monitoring and carrier registration for clients, to help keep calls from showing as Spam Likely. Kojo OS cannot promise a label never appears, because the carriers decide. Our guide on power dialer versus auto dialer compares two ways of placing calls.

Do business texts need registration too?

Yes, if you text customers from a regular number. 10DLC, the carriers' registration for business texting from a regular 10-digit number, is the route T-Mobile calls sanctioned. T-Mobile says entities sending sanctioned 10DLC traffic must be registered before their campaign messages are approved for delivery on its network. The Campaign Registry, the industry database behind it, says brands and messaging providers are verified before they may send. A business works through a registered messaging provider rather than registering directly.

Registration is about who you are and what you send. CTIA's messaging principles ask businesses to get consent before texting, to get express written consent for marketing messages, to let people revoke consent and to honor opt-outs such as STOP. This is general information, not legal advice. Check with your own adviser on consent. Our page on text and email follow-up covers the sending side.

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