# ReefAPI, free, Free, POST /phone-validate/v1/validate: Phone validation API

> validate ONE number → validity + format/region/line-type/carrier/timezone/location

ReefAPI's 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.
The cheapest of the 293 plans we rank by price is [Twilio, top-up](https://datacircle.dev/validate-phone-apis/twilio/top-up/llms.txt). Twilio's phone validation API costs nothing beyond the plan price.
[Listar](https://datacircle.dev/validate-phone-apis/listar/top-up-from-10-starter-post-search-verify-whatsapp/llms.txt), [HLR Lookups](https://datacircle.dev/validate-phone-apis/hlr-lookups/top-up-1-1m-post-hlr-lookup/llms.txt) and [CallerAPI](https://datacircle.dev/validate-phone-apis/callerapi/25-monthly-basic-get-api-network-lookup-phone/llms.txt) are the best phone validation API providers in our benchmark.

- This page: https://datacircle.dev/validate-phone-apis/reefapi/free-free-post-phone-validate-v1-validate
- [Best phone validation API in 2026](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://reefapi.com/pricing
- Request: `POST https://api.reefapi.com/phone-validate/v1/validate`
- API key: with the plan, on https://reefapi.com/pricing
- Its API docs: https://reefapi.com/docs/phone-validate#ep-validate
- Sold by: ReefAPI (https://reefapi.com)
- Checked: 2026-10-27

## In the answer

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

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: 584 other calls

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: validate ONE number → validity + format/region/line-type/carrier/timezone/location

## Data

- What it checks: numbering plan
- Keep data: no limit
- Use data: You are solely responsible for how you use the data you retrieve and for ensuring your use complies with all applicable laws, third-party terms, and the rights of others (including data-protection, intellectual-property, and anti-spam laws) in your jurisdiction and your users'. You will not use the Service to break the law, infringe rights, send spam, or build a competing bulk-redistribution product. [...] Don't attempt to circumvent authentication, rate limits, or credit metering, don't probe, scan, or stress the Service except your own account within posted limits. [...] Where a source requires attribution, we surface it in the response meta, honor it.

## Plan

- Pay: $0
- You get: 1,000 credits
- Enough for: 1,000 calls
- Expires: never

## Rate limit

- Per second: 10
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: number. Optional: region, lang
- Method: POST
- Path: /phone-validate/v1/validate

## About the plan

- Plan: Free
- Who can get it: anyone

## The 14 fields the plan's answer can hold

valid, possible, parse error, E.164 format, national format, international format, RFC 3966 format, country calling code, region code, national number, line type, carrier, location, timezones

## ReefAPI's plans (11)

- [ReefAPI, free, Free, POST /phone-validate/v1/validate](https://datacircle.dev/validate-phone-apis/reefapi/free-free-post-phone-validate-v1-validate/llms.txt): $0.00 per 1,000, 67% complete
- [ReefAPI, $15 monthly, Pro monthly, POST /phone-validate/v1/validate](https://datacircle.dev/validate-phone-apis/reefapi/15-monthly-pro-monthly-post-phone-validate-v1-validate/llms.txt): $1.50 per 1,000, 67% complete
- [ReefAPI, $50 monthly, Ultra monthly, POST /phone-validate/v1/validate](https://datacircle.dev/validate-phone-apis/reefapi/50-monthly-ultra-monthly-post-phone-validate-v1-validate/llms.txt): $1.00 per 1,000, 67% complete
- [ReefAPI, $200 monthly, Enterprise monthly, POST /phone-validate/v1/validate](https://datacircle.dev/validate-phone-apis/reefapi/200-monthly-enterprise-monthly-post-phone-validate-v1-validate/llms.txt): $0.667 per 1,000, 67% complete
- [ReefAPI, $33.75 quarterly, Pro quarterly, POST /phone-validate/v1/validate](https://datacircle.dev/validate-phone-apis/reefapi/33-75-quarterly-pro-quarterly-post-phone-validate-v1-validate/llms.txt): $1.125 per 1,000, 67% complete
- [ReefAPI, $112.50 quarterly, Ultra quarterly, POST /phone-validate/v1/validate](https://datacircle.dev/validate-phone-apis/reefapi/112-50-quarterly-ultra-quarterly-post-phone-validate-v1-validate/llms.txt): $0.75 per 1,000, 67% complete
- [ReefAPI, $450 quarterly, Enterprise quarterly, POST /phone-validate/v1/validate](https://datacircle.dev/validate-phone-apis/reefapi/450-quarterly-enterprise-quarterly-post-phone-validate-v1-validate/llms.txt): $0.50 per 1,000, 67% complete
- [ReefAPI, $90 yearly, Pro yearly, POST /phone-validate/v1/validate](https://datacircle.dev/validate-phone-apis/reefapi/90-yearly-pro-yearly-post-phone-validate-v1-validate/llms.txt): $0.75 per 1,000, 67% complete
- [ReefAPI, $300 yearly, Ultra yearly, POST /phone-validate/v1/validate](https://datacircle.dev/validate-phone-apis/reefapi/300-yearly-ultra-yearly-post-phone-validate-v1-validate/llms.txt): $0.50 per 1,000, 67% complete
- [ReefAPI, $1,200 yearly, Enterprise yearly, POST /phone-validate/v1/validate](https://datacircle.dev/validate-phone-apis/reefapi/1200-yearly-enterprise-yearly-post-phone-validate-v1-validate/llms.txt): $0.333 per 1,000, 67% complete
- [ReefAPI, contact us, Custom, POST /phone-validate/v1/validate](https://datacircle.dev/validate-phone-apis/reefapi/contact-us-custom-post-phone-validate-v1-validate/llms.txt): 67% complete

## ReefAPI's calls for this API (2)

- `POST /phone-validate/v1/batch`: [ReefAPI, free, Free, POST /phone-validate/v1/batch](https://datacircle.dev/validate-phone-apis/reefapi/free-free-post-phone-validate-v1-batch/llms.txt)
- `POST /phone-validate/v1/validate`: [ReefAPI, free, Free, POST /phone-validate/v1/validate](https://datacircle.dev/validate-phone-apis/reefapi/free-free-post-phone-validate-v1-validate/llms.txt)

## ReefAPI's APIs (12)

- [ReefAPI: company open jobs API pricing, 11 plans, POST /ats-jobs/v1/company_jobs, company_jobs (Ashby)](https://datacircle.dev/company-open-job-apis/reefapi/free-free-post-ats-jobs-v1-company-jobs-company-jobs-ashby/llms.txt)
- [ReefAPI: company open jobs API pricing, 11 plans, POST /glassdoor/v1/employer/jobs](https://datacircle.dev/company-open-job-apis/reefapi/free-free-post-glassdoor-v1-employer-jobs/llms.txt)
- [ReefAPI: company open jobs API pricing, 11 plans, POST /ats-jobs/v1/company_jobs, company_jobs (Greenhouse)](https://datacircle.dev/company-open-job-apis/reefapi/free-free-post-ats-jobs-v1-company-jobs-company-jobs-greenhouse/llms.txt)
- [ReefAPI: company open jobs API pricing, 11 plans, POST /ats-jobs/v1/company_jobs, company_jobs (Lever)](https://datacircle.dev/company-open-job-apis/reefapi/free-free-post-ats-jobs-v1-company-jobs-company-jobs-lever/llms.txt)
- [ReefAPI: company open jobs API pricing, 11 plans, POST /linkedin-jobs/v1/jobs/by-company](https://datacircle.dev/company-open-job-apis/reefapi/free-free-post-linkedin-jobs-v1-jobs-by-company/llms.txt)
- [ReefAPI: company open jobs API pricing, 11 plans, POST /reed/v1/company-jobs](https://datacircle.dev/company-open-job-apis/reefapi/free-free-post-reed-v1-company-jobs/llms.txt)
- [ReefAPI: company open jobs API pricing, 11 plans, POST /seek/v1/company-jobs](https://datacircle.dev/company-open-job-apis/reefapi/free-free-post-seek-v1-company-jobs/llms.txt)
- [ReefAPI: company open jobs API pricing, 11 plans, POST /ats-jobs/v1/company_jobs, company_jobs (Workable)](https://datacircle.dev/company-open-job-apis/reefapi/free-free-post-ats-jobs-v1-company-jobs-company-jobs-workable/llms.txt)
- [ReefAPI: company open jobs API pricing, 11 plans, POST /ziprecruiter/v1/jobs_by_company](https://datacircle.dev/company-open-job-apis/reefapi/free-free-post-ziprecruiter-v1-jobs-by-company/llms.txt)
- [ReefAPI: job posting details API pricing, 11 plans, POST /ats-jobs/v1/job_detail, job_detail (Ashby)](https://datacircle.dev/job-posting-details-apis/reefapi/free-free-post-ats-jobs-v1-job-detail-job-detail-ashby/llms.txt)
- [ReefAPI: job posting details API pricing, 11 plans, POST /global-jobs/v1/jobs/detail, jobs/detail (Catho)](https://datacircle.dev/job-posting-details-apis/reefapi/free-free-post-global-jobs-v1-jobs-detail-jobs-detail-catho/llms.txt)
- [ReefAPI: job posting details API pricing, 11 plans, POST /ats-jobs/v1/job_detail, job_detail (Greenhouse)](https://datacircle.dev/job-posting-details-apis/reefapi/free-free-post-ats-jobs-v1-job-detail-job-detail-greenhouse/llms.txt)
- [ReefAPI: job posting details API pricing, 11 plans, POST /global-jobs/v1/jobs/detail, jobs/detail (Gupy)](https://datacircle.dev/job-posting-details-apis/reefapi/free-free-post-global-jobs-v1-jobs-detail-jobs-detail-gupy/llms.txt)
- [ReefAPI: job posting details API pricing, 11 plans, POST /indeed/v1/job](https://datacircle.dev/job-posting-details-apis/reefapi/free-free-post-indeed-v1-job/llms.txt)
- [ReefAPI: job posting details API pricing, 11 plans, POST /ats-jobs/v1/job_detail, job_detail (Lever)](https://datacircle.dev/job-posting-details-apis/reefapi/free-free-post-ats-jobs-v1-job-detail-job-detail-lever/llms.txt)
- [ReefAPI: job posting details API pricing, 11 plans, POST /reed/v1/detail](https://datacircle.dev/job-posting-details-apis/reefapi/free-free-post-reed-v1-detail/llms.txt)
- [ReefAPI: job posting details API pricing, 11 plans, POST /seek/v1/detail](https://datacircle.dev/job-posting-details-apis/reefapi/free-free-post-seek-v1-detail/llms.txt)
- [ReefAPI: job posting details API pricing, 11 plans, POST /global-jobs/v1/jobs/detail, jobs/detail (StepStone)](https://datacircle.dev/job-posting-details-apis/reefapi/free-free-post-global-jobs-v1-jobs-detail-jobs-detail-stepstone/llms.txt)
- [ReefAPI: job posting details API pricing, 11 plans, POST /ats-jobs/v1/job_detail, job_detail (Workable)](https://datacircle.dev/job-posting-details-apis/reefapi/free-free-post-ats-jobs-v1-job-detail-job-detail-workable/llms.txt)
- [ReefAPI: job posting details API pricing, 11 plans, POST /ziprecruiter/v1/job_detail](https://datacircle.dev/job-posting-details-apis/reefapi/free-free-post-ziprecruiter-v1-job-detail/llms.txt)
- [ReefAPI: job postings API pricing, 11 plans, POST /global-jobs/v1/jobs/search, jobs/search (Catho)](https://datacircle.dev/job-posting-apis/reefapi/free-free-post-global-jobs-v1-jobs-search-jobs-search-catho/llms.txt)
- [ReefAPI: job postings API pricing, 11 plans, POST /global-jobs/v1/jobs/search, jobs/search (Gupy)](https://datacircle.dev/job-posting-apis/reefapi/free-free-post-global-jobs-v1-jobs-search-jobs-search-gupy/llms.txt)
- [ReefAPI: job postings API pricing, 11 plans, POST /indeed/v1/jobs/search](https://datacircle.dev/job-posting-apis/reefapi/free-free-post-indeed-v1-jobs-search/llms.txt)
- [ReefAPI: job postings API pricing, 11 plans, POST /global-jobs/v1/jobs/search, jobs/search (StepStone)](https://datacircle.dev/job-posting-apis/reefapi/free-free-post-global-jobs-v1-jobs-search-jobs-search-stepstone/llms.txt)
- [ReefAPI: job postings API pricing, 11 plans, POST /ats-jobs/v1/search](https://datacircle.dev/job-posting-apis/reefapi/free-free-post-ats-jobs-v1-search/llms.txt)
- [ReefAPI: job postings API pricing, 11 plans, POST /ziprecruiter/v1/search](https://datacircle.dev/job-posting-apis/reefapi/free-free-post-ziprecruiter-v1-search/llms.txt)
- [ReefAPI: job postings API pricing, 11 plans, POST /seek/v1/classification](https://datacircle.dev/job-posting-apis/reefapi/free-free-post-seek-v1-classification/llms.txt)
- [ReefAPI: job postings API pricing, 11 plans, POST /reed/v1/search](https://datacircle.dev/job-posting-apis/reefapi/free-free-post-reed-v1-search/llms.txt)
- [ReefAPI: job postings API pricing, 11 plans, POST /seek/v1/search](https://datacircle.dev/job-posting-apis/reefapi/free-free-post-seek-v1-search/llms.txt)
- [ReefAPI: job postings API pricing, 11 plans, POST /reed/v1/sector](https://datacircle.dev/job-posting-apis/reefapi/free-free-post-reed-v1-sector/llms.txt)
- [ReefAPI: company enrichment API pricing, 11 plans, POST /glassdoor/v1/employer/detail](https://datacircle.dev/company-enrichment-apis/reefapi/free-free-post-glassdoor-v1-employer-detail/llms.txt)
- [ReefAPI: company enrichment API pricing, 11 plans, POST /indeed/v1/company](https://datacircle.dev/company-enrichment-apis/reefapi/free-free-post-indeed-v1-company/llms.txt)
- [ReefAPI: company enrichment API pricing, 11 plans, POST /enrich-company/v1/company_domain](https://datacircle.dev/company-enrichment-apis/reefapi/free/llms.txt)
- [ReefAPI: company enrichment API pricing, 11 plans, POST /google-maps/v1/place/by-id](https://datacircle.dev/company-enrichment-apis/reefapi/free-free-post-google-maps-v1-place-by-id/llms.txt)
- [ReefAPI: company enrichment API pricing, 11 plans, POST /google-maps/v1/place/detail](https://datacircle.dev/company-enrichment-apis/reefapi/free-free-post-google-maps-v1-place-detail/llms.txt)
- [ReefAPI: company discovery API pricing, 11 plans, POST /indeed/v1/company/search](https://datacircle.dev/company-discovery-apis/reefapi/free-free-post-indeed-v1-company-search/llms.txt)
- [ReefAPI: company discovery API pricing, 11 plans, POST /google-maps/v1/place/nearby](https://datacircle.dev/company-discovery-apis/reefapi/free-free-post-google-maps-v1-place-nearby/llms.txt)
- [ReefAPI: company discovery API pricing, 11 plans, POST /google-maps/v1/place/search](https://datacircle.dev/company-discovery-apis/reefapi/free-free-post-google-maps-v1-place-search/llms.txt)
- [ReefAPI: LinkedIn company data API pricing, 11 plans](https://datacircle.dev/linkedin-company-profile-apis/reefapi/free/llms.txt)
- [ReefAPI: LinkedIn job details API pricing, 11 plans](https://datacircle.dev/linkedin-job-details-apis/reefapi/free/llms.txt)
- [ReefAPI: similar jobs API pricing, 11 plans](https://datacircle.dev/similar-job-apis/reefapi/free/llms.txt)
- [ReefAPI: LinkedIn job search API pricing, 11 plans](https://datacircle.dev/linkedin-job-search-apis/reefapi/free/llms.txt)
- [ReefAPI: cached email verification API pricing, 11 plans](https://datacircle.dev/cached-email-validation-apis/reefapi/free/llms.txt)
- [ReefAPI: phone validation API pricing, 11 plans, POST /phone-validate/v1/validate](https://datacircle.dev/validate-phone-apis/reefapi/free-free-post-phone-validate-v1-validate/llms.txt)
- [ReefAPI: SERP API pricing, 11 plans, POST /bing/v1/news](https://datacircle.dev/serp-apis/reefapi/free-free-post-bing-v1-news/llms.txt)
- [ReefAPI: SERP API pricing, 11 plans, POST /bing/v1/search](https://datacircle.dev/serp-apis/reefapi/free-free-post-bing-v1-search/llms.txt)
- [ReefAPI: SERP API pricing, 11 plans, POST /bing/v1/videos](https://datacircle.dev/serp-apis/reefapi/free-free-post-bing-v1-videos/llms.txt)

## ReefAPI: phone validation API alternatives

- [Twilio, top-up](https://datacircle.dev/validate-phone-apis/twilio/top-up/llms.txt): $0.00 per 1,000, 89% complete, live
- [APIFreaks, $100 pack, One-Off 600,000 credits, POST /phone/validation/bulk](https://datacircle.dev/validate-phone-apis/apifreaks/100-pack-one-off-600000-credits-post-phone-validation-bulk/llms.txt): $0.333 per 1,000, 67% complete, live
- [Phone-Check.app, $79.99 monthly, Business, GET /v1-get-phone-extra-details](https://datacircle.dev/validate-phone-apis/phone-check-app/79-99-monthly-business-get-v1-get-phone-extra-details/llms.txt): $0.552 per 1,000, 78% complete, live
- [RealValidito, $3,000 pack](https://datacircle.dev/validate-phone-apis/realvalidito/3000-pack-5000000-dnc-lookup-credits/llms.txt): $0.60 per 1,000, 11% complete

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-27.

- https://reefapi.com
- https://reefapi.com/_next/static/chunks/app/pricing/page-560e08c02e869119.js
- https://reefapi.com/docs
- https://reefapi.com/docs/phone-validate.md
- https://reefapi.com/pricing
- https://reefapi.com/refunds
- https://reefapi.com/terms