Phone Number Lookup
Validate any US phone number and see its line type, carrier, country, and spam reputation in seconds.
# free & rate-limited · no signup
Three quick steps
Enter a number
Paste any US phone number in any common format.
Live lookup runs
We check line status, carrier, line type, and spam reputation.
Read results
See whether it's active, its carrier, line type, and risk.
Line status
Confirm whether a number is active or invalid.
Carrier & line type
Identify carrier and whether it's mobile, landline, or VOIP.
Country detection
Resolve country and dialing code.
Spam reputation
See a spam and fraud reputation score.
Who uses it
Sales teams
Verify numbers before dialing to save agent time.
Developers
Validate phone inputs during signup.
Marketers
Separate mobiles from landlines for SMS.
Support
Add context to inbound callers.
FAQ
Is this phone lookup tool free?
Yes. It's free and rate-limited with no signup required to try. For higher volume and API access, create a free account with 1,000 lookups included.
How accurate are the results?
This free tool returns demo results to show what the API delivers. The production API is sourced from carrier, regulatory, and authoritative data updated daily.
Can I use this in bulk or via API?
Yes. Sign up for API access to run single lookups, bulk CSV jobs, and async processing with webhooks — all on one universal credit balance.