# Phone Validator

> Phone number validation: check whether a number is valid and get its line type, carrier, location and port status, in the browser, in batches or through an API.

The Phone Validator API (v5) validates a phone number with one request, `POST /v5/lookups`, and returns its country, region, line type (mobile, landline, VoIP or toll free), carrier and port status. Requests authenticate with an API key sent as a bearer token in the `Authorization` header. Call the API from a server: never put the key in browser or mobile app code. Test keys return fixed responses for documented test numbers and are never billed.

## API docs

- [API reference](https://www.phonevalidator.com/docs/api.md): authentication, request and response fields, error codes and code samples in cURL, Python, Node, PHP, Ruby, Go and C#
- [OpenAPI specification](https://www.phonevalidator.com/openapi.yaml): the machine-readable contract for the v5 API (OpenAPI 3.1)

## Product

- [Pricing](https://www.phonevalidator.com/pricing.md): what a lookup costs
- [Phone Validator API](https://www.phonevalidator.com/phone-validator-api.md): overview of the API
- [Phone number carrier lookup](https://www.phonevalidator.com/carrier-lookup.md): find a number's carrier and line type
- [Remove landlines from an SMS list](https://www.phonevalidator.com/remove-landlines.md): check a list's line types with a batch upload
- [TextNow number lookup](https://www.phonevalidator.com/textnow-number-lookup.md): check whether a phone number comes from the TextNow app
- [Google Voice number lookup](https://www.phonevalidator.com/google-voice-number-lookup.md): check whether a phone number is a Google Voice number
- [Check carrier phone numbers for fraud warning signs](https://www.phonevalidator.com/freight-carrier-phone-check.md): for freight brokers, check carrier packet phone numbers for VoIP lines, phone company and fake numbers
- [Phone validation API comparison](https://www.phonevalidator.com/compare.md): Phone Validator, Twilio Lookup, Numverify and other services side by side