Free · No signup required
Free phone number lookup & VoIP checker
Check any phone number for carrier, line type, VoIP and prepaid status, and fraud risk, with real results from the RiskUnified API. No signup needed.
What we check
VoIP detection
Flag VoIP and virtual numbers, the most common type behind burner and fake accounts.
Carrier lookup
The current operating carrier for the number, reflecting any porting.
Line type
Mobile, landline or VoIP, the single most useful signal for phone risk.
Prepaid status
Cheap, anonymous prepaid lines that are weighted higher in fraud models.
Location
Country and region context for mismatch and velocity checks.
Risk score
A single low / medium / high verdict with the named signals behind it.
Frequently asked questions
Is this phone lookup free?
Yes. You can look up numbers here with no signup and no credit card. For your own API key, every account includes 100 free checks a month.
How do you detect a VoIP number?
By resolving the number's carrier and line type. Numbers allocated to VoIP carriers or CLEC blocks resolve to a voip line type, which we return as a boolean flag.
Does the number get called or texted?
No. The lookup uses carrier and numbering-plan data only, so the phone's owner is never contacted.
How do I use this in my own product?
Generate a free API key and POST a phone number to the /phone_risk endpoint. You get the same structured result you see here, in a few lines of code.
Build this into your product
Get your own API key with 100 free checks a month. No credit card required.