Global spam databases
Millions of crowd-reported and carrier-flagged numbers, updated continuously.
Phone reputation intelligence
Is this number
spam — or safe?
Check any phone number in seconds. Get a clear spam verdict, risk score, carrier and complaint history — whether you received a suspicious call, or you run outbound calls for your business and need to protect your number’s reputation.
- 0
- numbers screened
- 0
- verdict accuracy*
- 0
- data sources
*Against labelled spam datasets in our demo corpus.
- No account needed
- Numbers never stored
- Bulk screening
STIR/SHAKEN aware
TCPA-aware
40+ sources per check
spam databases
carrier reputation
complaint feeds
Check a phone number
Free single check. Results in under 3 seconds.
Try an example
Trusted by teams who live on the phone
Sales teams, support desks, and anyone who’d rather call a good number than flag one.
“We screened our outbound numbers before a big campaign. Two were already flagged — we fixed carrier attestation before a single call went out.”
Maya R. — Head of Sales, Northwind
“Our agents check every unknown callback in one click. The risk score is clear enough that new hires use it on day one.”
Daniel K. — Support Lead, BrightTel
“Bulk-screening 10,000 leads a week took our list from 31% spam to under 4%. Our connect rate doubled — and so did trust.”
Priya S. — Ops Director, Loopscale
“As a small business, we got labelled ‘Scam Likely’ and lost calls. SpamCheck showed us why — and how to earn our reputation back.”
Tom H. — Owner, Harbour Plumbing
Story 1 of 4
- NORTHWIND
- BrightTel
- Loopscale
- Harbour&Co
- RelayCRM
- ClearVoice
How it works
Three steps, one clear answer. No guessing, no “might be spam”.
- 1
Enter the number
Paste or type any number. We normalise the format, detect the country, and validate it instantly.
- 2
We cross-check 40+ sources
Global spam databases, carrier reputation, complaint feeds, robocall patterns, DNC lists and attestation signals.
- 3
Get a verdict + next step
A plain-English risk score with a recommendation: answer, block, call back safely, or clean up your own outbound reputation.
What we check
Spam isn’t one thing. A robocall, a telemarketer and a spoofed scam number get flagged by different systems — we check them all.
Carrier & line reputation
VoIP, prepaid and burner line types, plus carrier trust levels by region.
Robocall patterns
Call-volume spikes, short-duration bursts and neighbour-spoofing behaviour.
Do Not Call & TCPA
Whether the number is on DNC registries, and what that means for calling it.
STIR/SHAKEN attestation
Whether a caller’s identity is cryptographically signed (A, B or C level) — key for businesses.
Complaint history
Count, recency and severity of reports, so one old complaint doesn’t sink a good number.
For businesses & cold callers
Call more. Get flagged less.
If your team makes outbound calls, your own numbers carry a reputation. Carriers and phone apps score them — and once you’re labelled “Scam Likely”, answer rates collapse. SpamCheck helps you stay on the right side of that line.
- Screen lists before you dial — remove spam, DNC and high-risk numbers from campaigns.
- Check your outbound numbers — see how carriers and apps see you before customers do.
- Fix attestation — get full STIR/SHAKEN A-level signing so legitimate calls show as legitimate.
- Stay TCPA-aware — consent, identification and opt-outs, built into your workflow.
Good outreach, not spam. SpamCheck is for legitimate, consented calling. We don’t help with deceptive, spoofed or high-volume unsolicited calling — and we flag it when we see it.
Outbound number health Sample
+1 (415) 555-0100Trusted · A-level
+1 (415) 555-0101Caution · B-level
+1 (415) 555-0102Flagged · Scam Likely
Add your numbers in the Business plan to monitor this daily and get alerts before a campaign.
See business pricingWhat the risk levels mean
Clean (0–29)
No meaningful reports. Safe to answer or call.
Low / Unknown (30–54)
Little data. Verify through official channels first.
Suspicious (55–79)
Telemarketer or repeated complaints. Don’t share personal info.
Spam (80–100)
Scam or robocall patterns. Block, don’t engage, report it.
Spam mix this week
Illustrative snapshot of reports in our demo corpus.
Robocalls42%
Telemarketing27%
Scam / fraud19%
Wrong number / nuisance12%
Demo numbers (555-01XX ranges) are fictional and used for illustration.
Your recent checks
Saved on this device only.
No checks yet — try an example number above.
Simple, transparent pricing
Start free. Top up check credits with USDT whenever you need volume.
Free checks
$0
Free forever
- Single number checks, no account needed
- Risk score + verdict
- Block & report guidance
Check credits
$500 USDT
50,000 credits · pay with USDT on Ethereum
- 50,000 check credits per batch
- Buy 1 or more batches from your dashboard
- Credits added automatically after on-chain confirmation
- One-time payment — no subscription
Business / API
Custom
- Unlimited screening
- Outbound reputation monitoring
- STIR/SHAKEN guidance
- API + webhooks + support
Create an account
Your calls, your numbers,
one clear dashboard.
Register once to explore a demo dashboard with number reputation, monitoring and Telegram alerts. Free to start.
- Tour the dashboard with sample numbers
- See how reputation and alerts work
- Your registration details stay in your profile
- Bulk screening and exports on Starter
Demo site: your details stay in this browser. Nothing is sent to a server or to Telegram.
Create your free account
Six details, then straight to your dashboard.
Welcome back
Log in with the Telegram username you registered.
Frequently asked questions
Is SpamCheck free?
Yes — single number checks are free with no account. Need volume? Top up 50,000 check credits for a one-time payment of $500 USDT from the Billing page in your dashboard.
How accurate is it?
We combine 40+ sources including carrier data, complaint feeds and behavioural patterns. No single source is perfect, so we show a confidence level with every verdict.
My own number is flagged. What do I do?
Check your STIR/SHAKEN attestation level, register with carriers, avoid call-volume spikes, and work with your provider to dispute false flags. Our Business plan walks you through it.
Do you store the numbers I check?
No. Checks are processed in transit and not retained. Your recent-check history stays on your device.
Can I use this for cold calling?
SpamCheck helps legitimate businesses call responsibly — screening out DNC and high-risk numbers, and protecting their own reputation. It is not a tool for deceptive or unsolicited spam.
Know before you answer.
Protect before you dial.
One free check can save you from a scam — or save your business from a flagged number.
Check a number now