Phone Number Validation API
Validate phone numbers in real time — confirm they're active, classify line type, estimate the carrier, and normalize to the E.164 standard for US and international numbers.
Check any US phone number's line type and carrier in seconds. No signup needed.
Complete Phone Number Validation
Line status, line type, carrier estimate, and E.164 formatting in a single lookup
Real-time validation & line status
Confirm whether a number is active, disconnected, or invalid instantly.
Line type detection
Distinguish mobile, landline, and VOIP numbers before you dial or text.
Carrier estimate
Return a best-effort carrier and network-type estimate for the number.
E.164 formatting
Normalize and validate numbers to the E.164 international standard.
US geographic data
Resolve US state and region from the area code.
Bulk & API
Validate one number or millions via API and CSV.
Phone Intelligence use cases
Common workflows teams run with this data.
E-commerce checkout validation
Catch fake or invalid numbers at checkout before you fulfill an order.
- Catch invalid numbers
- Reduce failed contact
- Protect revenue
Lead qualification
Verify numbers before they reach the dialer so agents only call real, reachable leads.
- Filter dead numbers
- Improve connect rates
- Save agent time
SMS marketing readiness
Confirm line type and filter out landlines to keep campaigns deliverable.
- Avoid landlines
- Flag VOIP
- Improve deliverability
Start using Phone Intelligence today
One API, universal credits, and 200 free credits a month. Live in about five minutes.