Spam Phone Checker
Score one number, or paste 20 on the free call list cleaner. Same complaint files. No signup.
# free & rate-limited · no signup · live results from the same engine as the API
Since the engine is the same one the API runs, a key does not buy you a better answer. It buys volume, bulk jobs and a signed receipt.
Have a file? Clean up to 20 numbers free, no account.
Three quick steps
Enter a number
Paste the number you want to check.
Lookup runs
We score spam, robocall, and fraud reputation.
Read results
See a 0-100 spam score and risk flags.
Spam score (0-100)
Quantify spam and nuisance risk.
Robocaller detection
Flag automated and robocall sources.
Complaint history
Surface reported complaint volume.
Fraud flags
Detect known fraud campaign numbers.
Who uses it
Call centers
Filter spam before it reaches agents.
Consumers
Check an unknown caller's reputation.
Outreach
Protect sender reputation.
Developers
Score inbound calls in your app.
What the score is built from
Most spam checkers show a verdict and no evidence. This one runs on public regulator data we host and refresh ourselves, so every element of the score is inspectable — and where the answer is a leading indicator rather than the thing itself, the result says so.
| Signal | What it tells you | Source |
|---|---|---|
| Complaint count | How many consumers reported this number | FTC Do Not Call complaint files, published every business day |
| Robocall share | How many of those reports were a recorded message | FTC complaint subject fields |
| Recency | Whether the number is active now or burned out months ago | Last report date across both feeds |
| Geographic spread | Reports from many states indicate a campaign, not a neighbour | Consumer state on FTC reports |
| Originating block | Wholesale VoIP ranges are over-represented among reported numbers | Numbering-plan block assignments we host |
| Second feed | Independent confirmation from a different agency's complaints | FCC consumer complaint data |
What this is not
It is not the carrier 'Spam Likely' label. That label is applied by three analytics firms working for the carriers — Hiya, First Orion and TNS — and their verdicts are not public. Complaint history is the fuel those systems run on, which makes it a useful leading signal, and an honest tool stops at that claim.
It is also not permission to call anyone. A clean score means nobody reported the number, not that a call to it is lawful — line type, consent and do-not-call status are separate questions, and they are what the paid Dial Check product answers.
Why a burned number goes quiet
Spam operations rotate numbers precisely because scores like this one exist. That is why recency is scored separately from volume: a number with five hundred reports whose last one is eight months old is probably retired, while forty reports in the last three weeks is a live campaign. The result shows both numbers rather than hiding them behind one verdict.
FAQ
Is this spam phone checker tool free?
Yes. Guests get 5 lookups a minute and 50 a day, no signup. A free account has 200 credits a month, no card, and core validations cost 1 credit each.
How accurate are the results?
The free tool runs the same engine as the API, so what you see here is what an integration returns. Where we cannot determine something we say so rather than guessing — a confident wrong answer is worse than an honest gap.
Can I use this in bulk or via API?
Yes. Paste 20 numbers with no account, or sign in and clean 100 a month on the free plan. Paid plans take longer lists, CSV jobs, webhooks and higher rate limits, from $3.16 per 1,000 core lookups.
Where does the spam score come from?
Two public regulator feeds: the FTC's Do Not Call complaint files, published every business day, and the FCC's consumer complaint data. We aggregate reported numbers, their robocall share, how recently they were reported, and how many states the reports came from. Community reports from our own users are folded in on top.
Will this tell me if MY number shows as 'Spam Likely'?
No, and be wary of tools that claim to. The 'Spam Likely' label on a phone screen is applied by three carrier analytics firms (Hiya for AT&T, First Orion for T-Mobile, TNS for Verizon), and none of them publish their verdicts. What we show is complaint history — a leading signal for those labels, since heavy complaint volume is what feeds them, but not the label itself.
A number shows a high score. Does that mean it is a scammer?
It means many people reported it, recently, and usually as a recorded message. That is a strong reason not to answer or to verify the caller another way — but a score is reputation, not proof. Numbers get spoofed, and a spoofed victim's number can collect complaints it did not earn.
Why do I keep getting calls from numbers like this?
Most high-scoring numbers trace back to bulk VoIP blocks — our results name the block type, and wholesale VoIP ranges are heavily over-represented among reported numbers. Lists circulate between operations, so answering once often increases the volume. Report unwanted calls at donotcall.gov: those reports are exactly the public data this tool reads.
Can a business use this before dialing a list?
Yes. Paste up to 20 numbers on the free call list cleaner with no account, or sign in and clean 100 a month. The same complaint history runs with line type, which decides which numbers need prior express consent under the TCPA.