# NumDetect, $19.90 pack, Basic, POST /api/v1/bulk-jobs, Bulk check, WhatsApp Business: Phone validation API

> See which apps a phone number uses before you reach out.

NumDetect's Basic plan for the phone validation API costs $0.30 per 1,000 phones. We check each provider's docs for 9 fields. NumDetect's docs list 1: Place.
We haven't run NumDetect through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
We rank 1,494 plans for phone validation APIs by price. Half the plans cost $3.20 or less per 1,000 phones. This plan costs less per 1,000 phones than 85% of the 1,494 plans.
[Linq's $260 monthly plan](https://datacircle.dev/validate-phone-apis/linq/260-monthly-pro-post-v3-capability-check-imessage/llms.txt) is the cheapest paid plan per 1,000 phones. Linq's phone validation API costs nothing beyond the plan price. [Keyronne's pay-as-you-go plan](https://datacircle.dev/validate-phone-apis/keyronne/pay-as-you-go/llms.txt) costs the least for 10,000 phones a month: $0.20.
[Trestle](https://datacircle.dev/validate-phone-apis/trestle/top-up-from-10-self-serve-pay-as-you-go-get-3-0-phone-intel-phone-validation-api/llms.txt), [Signal House](https://datacircle.dev/validate-phone-apis/signal-house/top-up-from-10/llms.txt) and [Data247](https://datacircle.dev/validate-phone-apis/data247/12-pack-membership-get-v3-0-verify247-phone/llms.txt) are the best phone validation API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-phone-apis/numdetect/19-90-pack-basic-post-api-v1-bulk-jobs-bulk-check-whatsapp-business
- [Phone validation API in 2026: the best of 60+ compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://numdetect.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `POST https://api.numdetect.com/api/v1/bulk-jobs`, Bulk check, WhatsApp Business
- API key: with the plan, on https://numdetect.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://numdetect.com/docs/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing#bulk
- Sold by: NumDetect (https://numdetect.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-12

## In the answer

- Completeness: 11%
- Place: ✓

## Price

- $ per 1,000 phones: $0.30
- Per: result
- Billing: pay first

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Single check

## Overage

- Units cap: hard

## Not found

- $ per 1,000 calls that find nothing: $0.30

## In their words

- Their pitch: See which apps a phone number uses before you reach out.

## Data

- Freshness: live
- What it checks: messaging apps
- Keep data: no limit
- Use data: Do not share access in a way that bypasses service limits. [...] Use only data you are entitled to process. Do not use the service for spam, harassment, unlawful surveillance, unauthorized access or attempts to bypass safeguards. Registration and Business signals do not prove identity, ownership, consent, recent activity or guaranteed message delivery. Do not treat unknown as a negative answer or use a signal as the sole basis for a decision with significant effects on a person.

## Plan

- Pay: $19.90
- You get: $19.90
- Enough for: about 66,333 results

## Rate limit

- Batch: 1,000,000

## Speed

- Answer: by polling or webhook

## The call

- You send: file, products "whatsapp_business", input_kind "phone", Idempotency-Key header. Optional: country, column, header, max_cost
- Method: POST
- Path: /api/v1/bulk-jobs

## About the plan

- Plan: Basic
- Who can get it: anyone who signs up, no approval step

## The 4 fields the plan's answer can hold

input, input status, country, registered

## NumDetect's plans (4)

- [NumDetect, $19.90 pack, Basic, POST /api/v1/bulk-jobs, Bulk check, WhatsApp Business](https://datacircle.dev/validate-phone-apis/numdetect/19-90-pack-basic-post-api-v1-bulk-jobs-bulk-check-whatsapp-business/llms.txt): $0.30 per 1,000, 11% complete, live
- [NumDetect, $69.90 pack, Plus, POST /api/v1/bulk-jobs, Bulk check, WhatsApp Business](https://datacircle.dev/validate-phone-apis/numdetect/69-90-pack-plus-post-api-v1-bulk-jobs-bulk-check-whatsapp-business/llms.txt): $0.284 per 1,000, 11% complete, live
- [NumDetect, $199.90 pack, Professional, POST /api/v1/bulk-jobs, Bulk check, WhatsApp Business](https://datacircle.dev/validate-phone-apis/numdetect/199-90-pack-professional-post-api-v1-bulk-jobs-bulk-check-whatsapp-business/llms.txt): $0.273 per 1,000, 11% complete, live
- [NumDetect, $499.90 pack, Scale, POST /api/v1/bulk-jobs, Bulk check, WhatsApp Business](https://datacircle.dev/validate-phone-apis/numdetect/499-90-pack-scale-post-api-v1-bulk-jobs-bulk-check-whatsapp-business/llms.txt): $0.25 per 1,000, 11% complete, live

## NumDetect's calls (10)

- `POST /api/v1/bulk-jobs`, Bulk check, Telegram: [NumDetect, $19.90 pack, Basic, POST /api/v1/bulk-jobs, Bulk check, Telegram](https://datacircle.dev/validate-phone-apis/numdetect/19-90-pack-basic-post-api-v1-bulk-jobs-bulk-check-telegram/llms.txt)
- `POST /api/v1/bulk-jobs`, Bulk check, Viber: [NumDetect, $19.90 pack, Basic, POST /api/v1/bulk-jobs, Bulk check, Viber](https://datacircle.dev/validate-phone-apis/numdetect/19-90-pack-basic-post-api-v1-bulk-jobs-bulk-check-viber/llms.txt)
- `POST /api/v1/bulk-jobs`, Bulk check, WhatsApp: [NumDetect, $19.90 pack, Basic, POST /api/v1/bulk-jobs, Bulk check, WhatsApp](https://datacircle.dev/validate-phone-apis/numdetect/19-90-pack-basic-post-api-v1-bulk-jobs-bulk-check-whatsapp/llms.txt)
- `POST /api/v1/bulk-jobs`, Bulk check, WhatsApp Business: [NumDetect, $19.90 pack, Basic, POST /api/v1/bulk-jobs, Bulk check, WhatsApp Business](https://datacircle.dev/validate-phone-apis/numdetect/19-90-pack-basic-post-api-v1-bulk-jobs-bulk-check-whatsapp-business/llms.txt)
- `POST /api/v1/bulk-jobs`, Bulk check, Zalo: [NumDetect, $19.90 pack, Basic, POST /api/v1/bulk-jobs, Bulk check, Zalo](https://datacircle.dev/validate-phone-apis/numdetect/19-90-pack-basic-post-api-v1-bulk-jobs-bulk-check-zalo/llms.txt)
- `POST /api/v1/checks`, Single check, Telegram: [NumDetect, $19.90 pack, Basic, POST /api/v1/checks, Single check, Telegram](https://datacircle.dev/validate-phone-apis/numdetect/19-90-pack-basic-post-api-v1-checks-single-check-telegram/llms.txt)
- `POST /api/v1/checks`, Single check, Viber: [NumDetect, $19.90 pack, Basic, POST /api/v1/checks, Single check, Viber](https://datacircle.dev/validate-phone-apis/numdetect/19-90-pack-basic-post-api-v1-checks-single-check-viber/llms.txt)
- `POST /api/v1/checks`, Single check, WhatsApp: [NumDetect, $19.90 pack, Basic, POST /api/v1/checks, Single check, WhatsApp](https://datacircle.dev/validate-phone-apis/numdetect/19-90-pack-basic-post-api-v1-checks-single-check-whatsapp/llms.txt)
- `POST /api/v1/checks`, Single check, WhatsApp Business: [NumDetect, $19.90 pack, Basic, POST /api/v1/checks, Single check, WhatsApp Business](https://datacircle.dev/validate-phone-apis/numdetect/19-90-pack-basic-post-api-v1-checks-single-check-whatsapp-business/llms.txt)
- `POST /api/v1/checks`, Single check, Zalo: [NumDetect, $19.90 pack, Basic, POST /api/v1/checks, Single check, Zalo](https://datacircle.dev/validate-phone-apis/numdetect/19-90-pack-basic-post-api-v1-checks-single-check-zalo/llms.txt)

## NumDetect's APIs (1)

- [NumDetect Phone validation API pricing, 4 plans, POST /api/v1/bulk-jobs, Bulk check, WhatsApp Business](https://datacircle.dev/validate-phone-apis/numdetect/19-90-pack-basic-post-api-v1-bulk-jobs-bulk-check-whatsapp-business/llms.txt)

## NumDetect: phone validation API alternatives

[NumDetect alternatives: other phone validation API providers by price](https://datacircle.dev/numdetect-alternatives.txt)

We list other providers' plans closest to this plan in price per 1,000 phones. Each plan in the list gives live data.

- [2Chat, $100 pack, Extra requests package, GET /open/whatsapp/check-number/{your-number}/{number-to-check}, Check Number](https://datacircle.dev/validate-phone-apis/2chat/100-pack-extra-requests-package-get-open-whatsapp-check-number-your-number-number-to-check-check-number/llms.txt): $0.20 per 1,000, 33% complete, live
- [WasenderAPI, $6 monthly](https://datacircle.dev/validate-phone-apis/wasenderapi/6-monthly/llms.txt): $0.20 per 1,000, 0% complete, live
- [ZelNum, $2,000 pack, Pay as you go, $2,000 top-up, POST /detect, HLR Lookup](https://datacircle.dev/validate-phone-apis/zelnum/2000-pack-pay-as-you-go-2000-top-up-post-detect-hlr-lookup/llms.txt): $0.32 per 1,000, 33% complete, live
- [TanshuAPI, CNY 2,900 pack](https://datacircle.dev/validate-phone-apis/tanshuapi/cny-2900-pack/llms.txt): $0.434 per 1,000, 44% 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 2026-11-12.

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