# Neutrino API, free: Phone validation API

> Parse, validate and get location information about a phone number

Neutrino API's phone validation API on its Free plan, $0.00 per 1,000 phones.

- This page: https://datacircle.dev/validate-phone-apis/neutrino-api/free
- Get it: https://www.neutrinoapi.com/plans/
- Its API docs: https://www.neutrinoapi.com/api/phone-validate/
- Sold by: Neutrino API (https://www.neutrinoapi.com)
- Checked: 2026-10-18

## Price

- $ per 1,000: $0.00
- Billing: free

## Charges

- Per: call

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Parse, validate and get location information about a phone number

## Data

- Keep data: no limit
- Use data: The user may create derivative products using our APIs including the data returned from our APIs with the exception of 4.2 below. [...] The user may not distribute, resell or transfer bulk API data to anyone other than the Licensee. Bulk API data is any data returned from any API which includes more than one single data record. [...] as well as any bulk data obtained by storing API response data on your own systems. [...] The user may not embed our APIs into client-side (e.g. JavaScript), desktop or mobile software without the protection of a server-side process or strong encryption. [...] The user may not allow anyone other than Licensee, Licensee’s employees, Licensee’s contractors or Licensee’s vendors to access our APIs or data without the suppliers express written permission.

## Plan

- Pay: $0
- Expires: refreshed at midnight in your account's timezone setting

## Rate limit

- Per second: 500
- Concurrent: 250
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: number. Optional: country-code, ip
- Method: GET
- Path: /phone-validate

## About the plan

- Plan: Free
- Who can get it: anyone

## The 14 fields in the plan's answer

valid, line type, mobile, carrier, location, country, country code, country ISO3 code, currency code, country calling code, international format, local format, error code, error message

## Neutrino API's plans (7)

- [Neutrino API, free](https://datacircle.dev/validate-phone-apis/neutrino-api/free/llms.txt): $0.00 per 1,000
- [Neutrino API, pay as you go, 0-1M](https://datacircle.dev/validate-phone-apis/neutrino-api/pay-as-you-go/llms.txt): $7.00 per 1,000, live
- [Neutrino API, pay as you go, On-Demand](https://datacircle.dev/validate-phone-apis/neutrino-api/pay-as-you-go-on-demand/llms.txt): $0.08 per 1,000
- [Neutrino API, $10 monthly](https://datacircle.dev/validate-phone-apis/neutrino-api/10-monthly/llms.txt): $0.033 per 1,000
- [Neutrino API, $50 monthly](https://datacircle.dev/validate-phone-apis/neutrino-api/50-monthly/llms.txt): $0.017 per 1,000
- [Neutrino API, $250 monthly](https://datacircle.dev/validate-phone-apis/neutrino-api/250-monthly/llms.txt): $0.0083 per 1,000
- [Neutrino API, contact us](https://datacircle.dev/validate-phone-apis/neutrino-api/contact-us/llms.txt): live

## Neutrino API's calls (2)

- `GET /phone-validate`: [Neutrino API, free](https://datacircle.dev/validate-phone-apis/neutrino-api/free/llms.txt)
- `GET /hlr-lookup`: [Neutrino API, pay as you go, 0-1M](https://datacircle.dev/validate-phone-apis/neutrino-api/pay-as-you-go/llms.txt)

## Similar plans of other providers

- [NumLookupAPI, free, Free, POST /v1/validate](https://datacircle.dev/validate-phone-apis/numlookupapi/free-free-post-v1-validate/llms.txt): $0.00 per 1,000, stored
- [RealPhoneValidation, free](https://datacircle.dev/validate-phone-apis/realphonevalidation/free/llms.txt): $0.00 per 1,000, live
- [Trestle, free](https://datacircle.dev/validate-phone-apis/trestle/free/llms.txt): $0.00 per 1,000, stored
- [Twilio, free](https://datacircle.dev/validate-phone-apis/twilio/free/llms.txt): $0.00 per 1,000, live

## Sources

From each provider's own pricing page and docs. We read this row from these pages on 2026-10-18.

- https://www.neutrinoapi.com/api/api-basics/
- https://www.neutrinoapi.com/api/api-errors/
- https://www.neutrinoapi.com/api/hlr-lookup/
- https://www.neutrinoapi.com/api/openapi-3.1.json
- https://www.neutrinoapi.com/api/phone-validate/
- https://www.neutrinoapi.com/plans/
- https://www.neutrinoapi.com/pricing/
- https://www.neutrinoapi.com/terms-and-conditions/