# NumRadar, €9 monthly, Starter, POST /validate: Phone validation API

> Find out which phone numbers are registered on WhatsApp. Upload a contact list, use the API, connect an AI agent, or check numbers in Chrome.

NumRadar's phone validation API on its Starter plan. It costs $2.026 per 1,000 phones. It returns 4 of the 9 key fields we check: Number, Validity, Type, Place.
€1.80 per 1,000 phones is $2.026 at the European Central Bank's rate of $1.1253 for €1.
We haven't run NumRadar through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
Half of the 888 plans we rank by price cost $3.376 per 1,000 phones or less. This plan costs less per 1,000 phones than 54% of the 888 plans.
[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/numradar/9-monthly-starter-post-validate
- [Phone validation API: 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://numradar.app/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `POST https://api.numradar.app/v1/validate`
- API key: with the plan, on https://numradar.app/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://numradar.app/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: NumRadar (https://numradar.app?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-02

## In the answer

- Completeness: 44%
- Number: ✓
- Validity: ✓
- Type: ✓
- Place: ✓

## Price

- $ per 1,000 phones: $2.026
- Per: call
- Billing: monthly
- $ a month: $10.13

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Find out which phone numbers are registered on WhatsApp. Upload a contact list, use the API, connect an AI agent, or check numbers in Chrome.

## Data

- Freshness: live
- What it checks: numbering plan, messaging apps
- Keep data: no limit
- Use data: You agree not to use NumRadar: To facilitate unsolicited messaging, bulk automated spam, harassment, or unlawful marketing communications under the TCPA, ePrivacy Directive, GDPR, or applicable regional telecommunication laws. [...] To scrape, harvest, or aggregate phone numbers without lawful authorization or consent from the data subjects. [...] To bypass, interfere with, or attempt to overload our rate limits, security safeguards, or infrastructure. [...] To reverse-engineer, decompile, or create derivative competitive works targeting the underlying validation engine. [...] Where you submit phone numbers or other personal data relating to third parties, you act as the controller of that data [...] You are responsible for having a lawful basis to submit the data you send us.

## Plan

- Pay: €9
- You get: 5,000 results a month
- Enough for: 5,000 calls a month
- Expires: end of the month

## Rate limit

- Per day: 1,000
- Per second: 0.042
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: phone, Content-Type header "application/json"
- Method: POST
- Path: /validate

## About the plan

- Plan: Starter
- Who can get it: anyone with a confirmed email address

## The 22 fields the plan's answer can hold

status, billable, input number, phone number, valid, registered on WhatsApp, WhatsApp ID, WhatsApp Business account, business name, business verification level, WhatsApp Business API, small business account, WhatsApp link, line type, WhatsApp sendable, country code, country name, country prefix, country flag, country currency, country languages, country timezones

## NumRadar's plans (5)

- [NumRadar, €9 monthly, Starter, POST /validate](https://datacircle.dev/validate-phone-apis/numradar/9-monthly-starter-post-validate/llms.txt): $2.026 per 1,000, 44% complete, live
- [NumRadar, €29 monthly, Growth, POST /validate](https://datacircle.dev/validate-phone-apis/numradar/29-monthly-growth-post-validate/llms.txt): $1.305 per 1,000, 44% complete, live
- [NumRadar, €99 monthly, Business, POST /validate](https://datacircle.dev/validate-phone-apis/numradar/99-monthly-business-post-validate/llms.txt): $1.114 per 1,000, 44% complete, live
- [NumRadar, €249 monthly, Enterprise, POST /validate](https://datacircle.dev/validate-phone-apis/numradar/249-monthly-enterprise-post-validate/llms.txt): $0.934 per 1,000, 44% complete, live
- [NumRadar, contact us, Dedicated plan, POST /validate](https://datacircle.dev/validate-phone-apis/numradar/contact-us-dedicated-plan-post-validate/llms.txt): 44% complete, live

## NumRadar's calls (2)

- `POST /validate`: [NumRadar, €9 monthly, Starter, POST /validate](https://datacircle.dev/validate-phone-apis/numradar/9-monthly-starter-post-validate/llms.txt)
- `POST /bulk`: [NumRadar, €9 monthly, Starter, POST /bulk](https://datacircle.dev/validate-phone-apis/numradar/9-monthly-starter-post-bulk/llms.txt)

## NumRadar's APIs (1)

- [NumRadar: phone validation API pricing, 5 plans, POST /validate](https://datacircle.dev/validate-phone-apis/numradar/9-monthly-starter-post-validate/llms.txt)

## NumRadar: phone validation API alternatives

- [MTS Exolve, top-up, Базовый: 100 001 - 200 000 запросов в месяц](https://datacircle.dev/validate-phone-apis/mts-exolve/top-up-100-001-200-000/llms.txt): $1.791 per 1,000, 33% complete, live
- [Veriphone, $999 pack, 5,000,000 credits, GET /v3/verify, /v3/verify, full](https://datacircle.dev/validate-phone-apis/veriphone/999-pack-5000000-credits-get-v3-verify-v3-verify-full/llms.txt): $1.998 per 1,000, 78% complete, live
- [2Chat, $480 yearly, Basic Plan, GET /open/whatsapp/check-number/{your-number}/{number-to-check}, Check Number](https://datacircle.dev/validate-phone-apis/2chat/480-yearly-basic-plan-get-open-whatsapp-check-number-your-number-number-to-check-check-number/llms.txt): $2.00 per 1,000, 33% complete, live
- [HLR Lookup, £900 pack, 300,000 lookups, POST /apiv2/mnp, MNP-only lookup](https://datacircle.dev/validate-phone-apis/hlr-lookup/900-pack-300000-lookups-post-apiv2-mnp/llms.txt): $2.00 per 1,000, 89% 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 2026-11-02.

- https://api.numradar.app/v1/plans?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://numradar.app?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://numradar.app/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://numradar.app/docs.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://numradar.app/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://numradar.app/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://numradar.app/pricing.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://numradar.app/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://numradar.app/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing