Is your business number showing up as Spam Likely?
A free phone number reputation lookup: spam reputation data and public FCC complaints on your US business number, then the steps to clear a label.
How to improve
your score
If your calls are showing up as Spam Likely, these are the steps that clear a label, in order. Tick each one as you go.
- 1Call one phone on each major carrier: AT&T, T-Mobile and Verizon. A teammate, a friend or a family member will do.
- 2Look at what shows on their screen: your business name, just the number, or a warning like Spam Likely or Scam Likely.
- 3You can also look the number up on the Free Caller Registry or in Truecaller.
- 4A label lives with the person's network, not on your line. This tells you where the problem actually is.
- 1Register your business on the Free Caller Registry.
- 2Declare your business name, every number you call from and what kind of calls you make.
- 3It reaches the engines behind AT&T, T-Mobile and Verizon in one place (run by companies like Hiya, TransUnion and First Orion).
- 4For a legitimate business number, it is the single most effective step.
- 1Pick a short form of your business name: 15 characters max, letters and numbers, like SMITH PLUMBING.
- 2Register it with your phone provider. On Allo it is free, in Settings > Numbers, under Number reputation.
- 3It takes up to 72 hours to show across carriers. It works on US and Canadian numbers.
- 4If you also text from a US number, complete your 10DLC brand registration: a registered brand is a trust signal for calls and texts.
- 1Screening apps on your customers' phones score numbers on their own, separately from the carriers.
- 2Submit your number and business name to Hiya, Truecaller, RoboKiller and Nomorobo through their free remediation forms.
- 3Worth doing whenever a customer tells you which app showed the warning.
- 1Bring your daily volume down for a while.
- 2Aim for calls that turn into conversations rather than a high dial count.
- 3Remove disconnected and wrong numbers, and stop calling people who asked you to.
- 4Leave a clear voicemail instead of hanging up, and send a short text before you call.
- 1Scores update gradually. Repeat the test calls from the first step after a week or two.
- 2If one carrier still labels or blocks you, contact that carrier directly.
- 3USTelecom's Industry Traceback Group keeps the contact form or email of every carrier in one directory.
Why numbers
get flagged
Carriers and the screening apps on your customers' phones watch how a number behaves. None of these is a switch: each one nudges a score that carriers recalculate on their own schedule.
Hurts a number's reputation
High volume in a short burst from one number- A lot of very short calls
- Many unanswered calls in a row
- Calling the same number again and again
- People tapping "Report spam" or blocking you
- Dialing disconnected or wrong numbers
Helps a number's reputation
Calls that turn into conversations- Calls of a normal length for your business
- People calling you back on the same number
- A registered caller ID name
- A text before the call, so they know who is calling
- A current, cleaned-up contact list
Two causes that have nothing to do with how you call
History from a previous owner
Numbers get recycled. A number you bought or ported can arrive with the reputation its last owner gave it.
Spoofing
Scammers sometimes fake a real number on their calls, and the complaints land on that number even though its owner never placed them.
Authentication
vs reputation
People often treat them as one thing. They are scored separately, by different parties, and a number can pass one and fail the other.
| What it answers | Who controls it | |
|---|---|---|
| Authentication (STIR/SHAKEN) | Is this caller allowed to use this number? | Your phone provider |
| Reputation | How has this number behaved so far? | The person's carrier and screening apps |
- Authentication (STIR/SHAKEN)
- What it answersIs this caller allowed to use this number?
- Who controls itYour phone provider
- Reputation
- What it answersHow has this number behaved so far?
- Who controls itThe person's carrier and screening apps
Authentication proves you are not spoofing a number you do not own. It says nothing about whether people want to hear from you. That second question is reputation, and it is where Spam Likely labels come from.
Need numbers that don't get flagged?
Allo is the business phone system built for calls that get answered. Every call carries the strongest trust signals a provider can attach, and our team helps when a label shows up.
A-level STIR/SHAKEN on every call
Every call you place through Allo is signed with full A-level attestation, the strongest signal a provider can attach.
Your caller ID name, free
Set your business name in Settings > Numbers. Registration is free and self-serve.
Help finding the right dispute channel
If a label shows up, the Allo team checks your number's setup and points you to the carrier or app to contact.
Keep your number, free porting
Bring the number your customers already know. Porting is free.
Questions about
phone number reputation
An Allo agent picks up and puts you through to sales or support. Ask them anything about your number.
888-298-ALLOIt is how carriers and call-screening apps rate your phone number, based on how it has behaved: how many calls it places, how many get answered, how long they last, and how often people report or block it. A good reputation means your calls ring normally. A poor one means they arrive labeled Spam Likely, or get blocked. It is separate from authentication (STIR/SHAKEN), which only proves you are allowed to use the number.
No. This tool is for checking your own business number before you call customers from it. If you want to know who called you from an unknown number, your carrier's call-blocking app or a screening app like Hiya or RoboKiller is the right tool.
Call a few phones on different carriers (one AT&T, one T-Mobile, one Verizon) and ask what shows on screen: your business name, just the number, or a warning like Spam Likely. That is a caller ID test, and it is different from a reputation lookup: the test shows one call on one network, the reputation lookup reads the data carriers score you with. Do both. How to read the result.
Carriers and screening apps score how a number behaves: lots of calls in a short burst, very short or unanswered calls, people reporting or blocking you. When the score drops far enough, your call arrives labeled. A number can also inherit a label from a previous owner, or pick one up because scammers spoofed it. What carriers score.
No. The label is applied by the recipient's carrier (AT&T, T-Mobile, Verizon) and by screening apps on their phone, such as Hiya, Truecaller, RoboKiller and Nomorobo. Allo never labels numbers. A provider's job is to give your calls the strongest trust signals available: full STIR/SHAKEN attestation and a registered caller ID name.
No. This check reads third-party reputation data and public FCC complaints. Carriers score each call in real time with their own systems, so a number can look fine here and still be labeled on a given call, or the reverse. To see what a customer sees, call a few phones on different carriers and look at the screen.
Weeks rather than days, and only if the calling pattern behind it changes. Carriers recalculate scores on their own schedule, and a number with a long history of complaints takes longer. Register with the Free Caller Registry, set your caller ID name, then give the networks a couple of weeks of good calling.
Numbers are recycled between businesses, so you may have inherited the previous owner's reputation. Scammers can also spoof a real number, and the complaints land on it. Registering the number under your business with the Free Caller Registry documents who uses it today, and is the right first move.
The tool is not the signal, the pattern is. A carrier cannot tell whether a number was dialed by hand or from a queue. What it sees is volume, answer rate and call length. A dialer does make the risky pattern easier to produce, so pace your sessions and watch how many calls actually connect.
Usually not. A new number starts with no history, and carriers treat an unknown number with suspicion too, so you start the warm-up again. If the calling pattern has not changed, the new number ends up in the same place. The same goes for switching providers: the number's reputation moves with it.
It reads three sources: spam reputation data built from carrier and consumer reports, robocall monitoring data (numbers caught calling honeypot lines), and the FCC's public consumer complaints database. We don't store the number you check: results are cached for a day under a one-way code, not the number itself, and the number never goes into our analytics. Results are not the label a specific carrier will show on a given call: carriers and screening apps score calls in real time, so a number can look fine here and still be labeled, or the reverse. Complaint records are reported by consumers and are not verified. Allo does not label phone numbers.