Phone Number Lookup
Validate any US phone number and see its line type, carrier, and country in seconds.
# 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 any US phone number in any common format.
Live lookup runs
We check validity, line type, carrier, and location.
Read results
See whether it's valid, its carrier, line type, and location.
Validity check
Confirm whether a number is valid or malformed.
Carrier & line type
Identify carrier (best-effort) and whether it's mobile, landline, or VOIP.
Country detection
Resolve country and dialing code.
E.164 formatting
Get the normalized international format.
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. 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.