# Neutrino API, free: Cached phone validation API

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

Neutrino API's cached phone validation API on its Free plan. It costs $0.00 per 1,000 phones. It returns 6 of the 9 key fields we check: Number, Formats, Validity, Type, Carrier, Place.

- This page: https://datacircle.dev/cached-phone-validation-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

## In the answer

- Completeness: 67%
- Number: ✓
- Formats: ✓
- Validity: ✓
- Type: ✓
- Carrier: ✓
- Place: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Per: call
- Also pays for: Bad Word Filter · BIN Lookup · Browser Bot · Convert · Domain Lookup · Email Validate · Email Verify · Geocode Address · Geocode Reverse · Host Reputation · HTML Clean · HTML Render · Image Resize · Image Watermark · IP Blocklist · IP Info · IP Probe · QR Code · UA Lookup · URL Info

## Not found

- $ per 1,000: $0.00

## In their words

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

## Data

- Freshness: stored
- 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

## 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 12 fields the plan's answer can hold

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

## Neutrino API's plans (5)

- [Neutrino API, free](https://datacircle.dev/cached-phone-validation-apis/neutrino-api/free/llms.txt): $0.00 per 1,000, 67% complete, stored
- [Neutrino API, pay as you go](https://datacircle.dev/cached-phone-validation-apis/neutrino-api/pay-as-you-go/llms.txt): $0.08 per 1,000, 67% complete, stored
- [Neutrino API, $10 monthly](https://datacircle.dev/cached-phone-validation-apis/neutrino-api/10-monthly/llms.txt): $0.033 per 1,000, 67% complete, stored
- [Neutrino API, $50 monthly](https://datacircle.dev/cached-phone-validation-apis/neutrino-api/50-monthly/llms.txt): $0.017 per 1,000, 67% complete, stored
- [Neutrino API, $250 monthly](https://datacircle.dev/cached-phone-validation-apis/neutrino-api/250-monthly/llms.txt): $0.0083 per 1,000, 67% complete, stored

## Neutrino API's calls (1)

- `GET /phone-validate`: [Neutrino API, free](https://datacircle.dev/cached-phone-validation-apis/neutrino-api/free/llms.txt)

## Neutrino API's APIs (3)

- [Neutrino API: cached phone validation API pricing, 5 plans](https://datacircle.dev/cached-phone-validation-apis/neutrino-api/free/llms.txt)
- [Neutrino API: email verification API pricing, 5 plans, GET /email-validate](https://datacircle.dev/validate-email-apis/neutrino-api/free-free-get-email-validate/llms.txt)
- [Neutrino API: email verification API pricing, 5 plans, GET /email-verify](https://datacircle.dev/validate-email-apis/neutrino-api/free-free-get-email-verify/llms.txt)
- [Neutrino API: phone validation API pricing, 2 plans](https://datacircle.dev/validate-phone-apis/neutrino-api/pay-as-you-go/llms.txt)

## Neutrino API: cached phone validation API alternatives

- [Strale, free](https://datacircle.dev/cached-phone-validation-apis/strale/free/llms.txt): $0.00 per 1,000, 56% complete, stored
- [Botoi, free](https://datacircle.dev/cached-phone-validation-apis/botoi/free/llms.txt): $0.00 per 1,000, 44% complete, stored
- [NumLookupAPI, free, Free, POST /v1/validate](https://datacircle.dev/cached-phone-validation-apis/numlookupapi/free-free-post-v1-validate/llms.txt): $0.00 per 1,000, 67% complete, stored
- [Trestle, free](https://datacircle.dev/cached-phone-validation-apis/trestle/free/llms.txt): $0.00 per 1,000, 56% complete, stored

## Sources

From each provider's own pricing page and docs, and from what providers tell us. 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/