Check if a phone number is flagged as spam, whether it is calling you or you are calling out
Send a number and get a 0 to 100 spam score with the risk factors behind it, plus robocall status for US and Canadian numbers. Use it to screen who calls you and to check whether your own business numbers look like spam. 1 credit per US or Canadian check.
1 credit
Per US Check
0-100
Spam Score
200 per 10 s
Per API key, 1,000 a minute per account
Try it free first: Free Spam Phone Checker
Check whether a US or Canadian number is reported as spam or flagged as a robocaller. No signup needed.
Not sure a number is even real? Check whether it is valid with the free phone number checker. To see which carrier holds a number that called you, use the free carrier lookup.
One spam check covers the callers who reach you and the numbers you call from.
Screen incoming callers, and keep an eye on your own business numbers.
Check a caller before you answer or call back.
Send a US or Canadian number and get a 0-100 spam score, a robocall flag and a suggested action: approve, review or block.
- A 0-100 spam score on every rated number
- Robocall status for each number
- User-report reputation for each number
- The reasons behind the score in the same response
Hear first when one of your own numbers starts getting flagged.
Number Monitoring re-checks the numbers your team calls from and alerts you when a number's spam risk level changes.
- Daily or weekly re-checks
- Email and webhook alerts
- Spam check you can add to any list
- Carrier, line type and Do Not Call changes in the same alert
Number Monitoring re-checks your business numbers every day or every week.
Add the numbers your team calls from, pick daily or weekly, and get an email or webhook alert when a number's spam risk level changes, so you can switch lines before answer rates fall.
Robocalls reach Americans by the billion, and one credit checks one number.
Here is the scale of the problem, and what a single check returns.
Americans received about 52.5 billion robocalls in 2025.
The YouMail Robocall Index counted 52.5 billion robocalls to Americans in 2025, and 56% of December's calls were unwanted telemarketing or scams.
One check returns what you need to decide what to do with a call.
Each result also shows whether the number has a negative user reputation and whether it is flagged as a robocaller, so you can see why it scored the way it did.
Phone Spam Protection Impact
2.6M
Do Not Call Complaints, FY2025
258M
Numbers on the Do Not Call Registry
1 credit
Per US and Canada check
FTC data shows over 2.6 million Do Not Call complaints in fiscal year 2025, with over 258 million active registrations on the registry.
Check your first number for spam today.
Get a spam score, a robocall flag and a suggested action for any US or Canadian number, and set up monitoring for the numbers you call from.
Free trial credits • Setup in 5 minutes • Premium support