# NumCheckr, free: Phone validation API

> Protect your application from fake and disposable phone numbers. Fraudsters and bots use virtual and burner phone numbers to sign up to your service. Our fake number checker identifies disposable, temporary, VoIP and virtual numbers in real time so you can protect your service from spam and fraud.

NumCheckr's phone validation API on its Trial plan. It costs $0.00 per 1,000 phones. It returns 5 of the 9 key fields we check: Formats, Type, Carrier, Place, Risk.
We haven't run NumCheckr 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/numcheckr/free
- [Phone validation API: 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://numcheckr.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `POST https://numcheckr.com/api/check-number`
- API key: with the plan, on https://numcheckr.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://numcheckr.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: NumCheckr (https://numcheckr.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-05

## In the answer

- Completeness: 56%
- Formats: ✓
- Type: ✓
- Carrier: ✓
- Place: ✓
- Risk: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Protect your application from fake and disposable phone numbers. Fraudsters and bots use virtual and burner phone numbers to sign up to your service. Our fake number checker identifies disposable, temporary, VoIP and virtual numbers in real time so you can protect your service from spam and fraud.

## Data

- Freshness: live
- Countries: Worldwide
- What it checks: numbering plan, carrier, line in service
- Keep data: no limit
- Use data: The Content and Marks are provided in or through the Services "AS IS" for your personal, non-commercial use or internal business purpose only. [...] no part of the Services and no Content or Marks may be copied, reproduced, aggregated, republished, uploaded, posted, publicly displayed, encoded, translated, transmitted, distributed, sold, licensed, or otherwise exploited for any commercial purpose whatsoever, without our express prior written permission. [...] The Services may not be used in connection with any commercial endeavors except those that are specifically endorsed or approved by us. As a user of the Services, you agree not to: Systematically retrieve data or other content from the Services to create or compile, directly or indirectly, a collection, compilation, database, or directory without written permission from us. [...] Engage in any automated use of the system, such as using scripts to send comments or messages, or using any data mining, robots, or similar data gathering and extraction tools. [...] Use the Services as part of any effort to compete with us or otherwise use the Services and/or the Content for any revenue-generating endeavor or commercial enterprise.

## Plan

- Pay: $0
- You get: 50 requests a month
- Enough for: 50 calls a month

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: phone
- Method: POST
- Path: /api/check-number

## About the plan

- Plan: Trial
- Who can get it: anyone

## The 10 fields the plan's answer can hold

line active, disposable, public SMS gateways, line type, country code, country name, carrier, E.164 format, national format, international format

## NumCheckr's plans (7)

- [NumCheckr, free](https://datacircle.dev/validate-phone-apis/numcheckr/free/llms.txt): $0.00 per 1,000, 56% complete, live
- [NumCheckr, $29 monthly](https://datacircle.dev/validate-phone-apis/numcheckr/29-monthly/llms.txt): $14.50 per 1,000, 56% complete, live
- [NumCheckr, $99 monthly](https://datacircle.dev/validate-phone-apis/numcheckr/99-monthly/llms.txt): $9.90 per 1,000, 56% complete, live
- [NumCheckr, $299 monthly](https://datacircle.dev/validate-phone-apis/numcheckr/299-monthly/llms.txt): $6.644 per 1,000, 56% complete, live
- [NumCheckr, $290 yearly](https://datacircle.dev/validate-phone-apis/numcheckr/290-yearly/llms.txt): $12.083 per 1,000, 56% complete, live
- [NumCheckr, $990 yearly](https://datacircle.dev/validate-phone-apis/numcheckr/990-yearly/llms.txt): $8.25 per 1,000, 56% complete, live
- [NumCheckr, $2,990 yearly](https://datacircle.dev/validate-phone-apis/numcheckr/2990-yearly/llms.txt): $5.537 per 1,000, 56% complete, live

## NumCheckr's calls (1)

- `POST /api/check-number`: [NumCheckr, free](https://datacircle.dev/validate-phone-apis/numcheckr/free/llms.txt)

## NumCheckr's APIs (1)

- [NumCheckr: phone validation API pricing, 7 plans](https://datacircle.dev/validate-phone-apis/numcheckr/free/llms.txt)

## NumCheckr: phone validation API alternatives

- [HLR Lookup, £102.50 pack, 25,000 lookups, POST /apiv2/hlr, Full HLR lookup](https://datacircle.dev/validate-phone-apis/hlr-lookup/102-50-pack-25000-lookups-post-apiv2-hlr/llms.txt): $5.467 per 1,000, 89% complete, live
- [OVHcloud, €24,500 pack](https://datacircle.dev/validate-phone-apis/ovhcloud/24500-pack/llms.txt): $5.514 per 1,000, 44% complete, live
- [MobileValidate, top-up from $500, Top-up of $500 to $1,999.99, POST /lookup, Live network status (HLR) (real-time)](https://datacircle.dev/validate-phone-apis/mobilevalidate/top-up-from-500-top-up-of-500-to-1999-99-post-lookup-live-network-status-hlr-real-time/llms.txt): $5.556 per 1,000, 56% complete, live
- [HLR Lookups, top-up from €50,000, 10M (or more), POST /hlr-lookups](https://datacircle.dev/validate-phone-apis/hlr-lookups/top-up-from-50000-10m-or-more-post-hlr-lookups/llms.txt): $5.627 per 1,000, 56% complete, live

## 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://numcheckr.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://numcheckr.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://numcheckr.com/terms-of-use?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing