# IsValid, free: Phone validation API

> Validates phone numbers for 200+ countries. Returns the country, calling code, national number, line type, and formatted representations (E.164, national, international).

IsValid's phone validation API on its Free plan. It costs $0.00 per 1,000 phones. It returns 5 of the 9 key fields we check: Number, Formats, Validity, Type, Place.
We haven't run IsValid through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
This plan is free. We rank 888 plans for phone validation APIs by price. Half the plans cost $3.376 per 1,000 phones or less.
[Botoi's $199 monthly plan](https://datacircle.dev/validate-phone-apis/botoi/199-monthly/llms.txt) is the cheapest paid plan per 1,000 phones: as little as $0.0066. Botoi's $199 monthly plan covers up to 1,000,000 phones a day.
[Data247](https://datacircle.dev/validate-phone-apis/data247/12-pack-membership-get-v3-0-verify247-phone/llms.txt), [Foxentry](https://datacircle.dev/validate-phone-apis/foxentry/top-up-pay-as-you-go-post-phone-validate-validate-phone-number-extended/llms.txt) and [HLR Lookups](https://datacircle.dev/validate-phone-apis/hlr-lookups/top-up-1-1m-post-hlr-lookup/llms.txt) are the best phone validation API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-phone-apis/isvalid/free
- [Phone validation API: 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://isvalid.dev/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `GET https://api.isvalid.dev/v0/phone`
- API key: with the plan, on https://isvalid.dev/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://isvalid.dev/docs/phone?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: IsValid (https://isvalid.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-05

## In the answer

- Completeness: 56%
- Number: ✓
- Formats: ✓
- Validity: ✓
- Type: ✓
- Place: ✓

## Price

- $ per 1,000 phones: $0.00
- Per: call
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: 76 other calls

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Validates phone numbers for 200+ countries. Returns the country, calling code, national number, line type, and formatted representations (E.164, national, international).

## Data

- Countries: Worldwide
- What it checks: numbering plan
- Keep data: no limit
- Use data: You agree to use the Service strictly within the limits of your chosen subscription plan. [...] You must not attempt to circumvent rate limits through any means, including but not limited to: Creating multiple accounts to aggregate free-tier quotas, Using proxies, VPNs, or other technical measures to bypass rate limiting, Sharing API keys with third parties outside your organization, Reverse engineering or scraping the Service infrastructure [...] Abusive use of the Service is strictly prohibited. [...] if we determine in our sole discretion that you are engaged in: Automated abuse — running bots, scrapers, or scripts that place excessive load on the Service beyond normal API usage patterns, Fraudulent activity — using the Service to validate data for purposes of fraud, identity theft, spam, or phishing, Illegal use — any activity that violates applicable local, national, or international law, Reselling without authorization — offering the Service to third parties as your own product without a written reseller agreement, Security attacks — attempting to probe, scan, or test vulnerabilities of the Service or its underlying infrastructure

## Plan

- Pay: €0
- You get: 100 requests a day
- Enough for: 100 calls a day
- Expires: Rate limits reset at midnight UTC each day

## Rate limit

- Per day: 100
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: value. Optional: countryCode
- Method: GET
- Path: /v0/phone

## About the plan

- Plan: Free
- Who can get it: anyone

## The 8 fields the plan's answer can hold

valid, country code, calling code, national number, line type, E.164 format, national format, international format

## IsValid's plans (3)

- [IsValid, free](https://datacircle.dev/validate-phone-apis/isvalid/free/llms.txt): $0.00 per 1,000, 56% complete
- [IsValid, €9 monthly](https://datacircle.dev/validate-phone-apis/isvalid/9-monthly/llms.txt): $0.034 per 1,000, 56% complete
- [IsValid, €49 monthly](https://datacircle.dev/validate-phone-apis/isvalid/49-monthly/llms.txt): $0.018 per 1,000, 56% complete

## IsValid's calls for this API (1)

- `GET /v0/phone`: [IsValid, free](https://datacircle.dev/validate-phone-apis/isvalid/free/llms.txt)

## IsValid's APIs (3)

- [IsValid: email verification API pricing, 3 plans](https://datacircle.dev/validate-email-apis/isvalid/free/llms.txt)
- [IsValid: phone validation API pricing, 3 plans](https://datacircle.dev/validate-phone-apis/isvalid/free/llms.txt)
- [IsValid: business verification API pricing, 3 plans, GET /v0/au/abn](https://datacircle.dev/business-verification-apis/isvalid/free-get-v0-au-abn/llms.txt)
- [IsValid: business verification API pricing, 3 plans, GET /v0/pl/ceidg](https://datacircle.dev/business-verification-apis/isvalid/free-get-v0-pl-ceidg/llms.txt)
- [IsValid: business verification API pricing, 3 plans, GET /v0/br/cnpj](https://datacircle.dev/business-verification-apis/isvalid/free-get-v0-br-cnpj/llms.txt)
- [IsValid: business verification API pricing, 3 plans, GET /v0/duns](https://datacircle.dev/business-verification-apis/isvalid/free-get-v0-duns/llms.txt)
- [IsValid: business verification API pricing, 3 plans, GET /v0/eori](https://datacircle.dev/business-verification-apis/isvalid/free-get-v0-eori/llms.txt)
- [IsValid: business verification API pricing, 3 plans, GET /v0/pl/krs](https://datacircle.dev/business-verification-apis/isvalid/free-get-v0-pl-krs/llms.txt)
- [IsValid: business verification API pricing, 3 plans, GET /v0/lei](https://datacircle.dev/business-verification-apis/isvalid/free-get-v0-lei/llms.txt)
- [IsValid: business verification API pricing, 3 plans, GET /v0/lei/search](https://datacircle.dev/business-verification-apis/isvalid/free-get-v0-lei-search/llms.txt)
- [IsValid: business verification API pricing, 3 plans, GET /v0/pl/regon](https://datacircle.dev/business-verification-apis/isvalid/free-get-v0-pl-regon/llms.txt)
- [IsValid: business verification API pricing, 3 plans, GET /v0/vat](https://datacircle.dev/business-verification-apis/isvalid/free-get-v0-vat/llms.txt)

## IsValid: phone validation API alternatives

- [Kiprio, $49 monthly](https://datacircle.dev/validate-phone-apis/kiprio/49-monthly/llms.txt): $0.016 per 1,000, 56% complete, stored
- [Neutrino API, $50 monthly](https://datacircle.dev/validate-phone-apis/neutrino-api/50-monthly/llms.txt): $0.017 per 1,000, 67% complete, stored
- [API Ninjas, $2,388 yearly, Professional, GET /v1/phonelookup](https://datacircle.dev/validate-phone-apis/api-ninjas/2388-yearly-professional-get-v1-phonelookup/llms.txt): $0.02 per 1,000, 67% complete, stored
- [ReefAPI, $50 monthly, Ultra monthly, POST /phone-validate/v1/batch](https://datacircle.dev/validate-phone-apis/reefapi/50-monthly-ultra-monthly-post-phone-validate-v1-batch/llms.txt): $0.02 per 1,000, 67% 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 2026-11-05.

- https://isvalid.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://isvalid.dev/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://isvalid.dev/docs/phone?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://isvalid.dev/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://isvalid.dev/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing