# WhatsApp number check API: best providers in 2026 > [NumRadar](https://datacircle.dev/check-whatsapp-apis/numradar/249-monthly-enterprise-post-validate), [ZelNum](https://datacircle.dev/check-whatsapp-apis/zelnum/200-pack-pay-as-you-go-200-top-up-post-realtime-check-series) and [Listar](https://datacircle.dev/check-whatsapp-apis/listar/top-up-from-10) are the best WhatsApp number check API providers in the Datacircle benchmark. We score 4 WhatsApp number check APIs. ZelNum doesn't say whether the account is a WhatsApp Business account. For the three we score highest, we show each one's top scoring plan, each part of the plan's score and what 1,000 phones cost. [NumRadar's €249 monthly plan](https://datacircle.dev/check-whatsapp-apis/numradar/249-monthly-enterprise-post-validate) costs the least per 1,000 phones in our ranking: $0.93. [NumRadar's €249 monthly plan](https://datacircle.dev/check-whatsapp-apis/numradar/249-monthly-enterprise-post-validate) allows 6,000 calls an hour, the most in our ranking. To buy WhatsApp number check API calls, start with [NumRadar's €249 monthly plan](https://datacircle.dev/check-whatsapp-apis/numradar/249-monthly-enterprise-post-validate). You can try it first on [NumRadar's €9 monthly plan](https://datacircle.dev/check-whatsapp-apis/numradar/9-monthly-starter-post-validate), with €9 (about $10) to pay before your first result. 1. [NumRadar, €249 monthly, Enterprise: WhatsApp number check API](https://datacircle.dev/check-whatsapp-apis/numradar/249-monthly-enterprise-post-validate): Overall score 73.6 (Price 72, Accuracy 100, Cost to get started 66, Bundle 0, Performance 57), $0.93 per 1,000 phones - We check each provider's docs for 6 fields. NumRadar's docs list 4: On WhatsApp, Business account, WhatsApp ID, Place. - Request: `POST https://api.numradar.app/v1/validate` - API key: With the plan, on numradar.app - On 6 and 14 November 2026, we sent this provider all 32 numbers in our benchmark. - Rate limit: 6,000 calls an hour, 25,000 a day 2. [ZelNum, $200 pack, Pay as you go, $200 top-up: WhatsApp number check API](https://datacircle.dev/check-whatsapp-apis/zelnum/200-pack-pay-as-you-go-200-top-up-post-realtime-check-series): Overall score 66.4 (Price 21, Accuracy 100, Cost to get started 72, Bundle 98, Performance 76), $7.27 per 1,000 phones - We check each provider's docs for 6 fields: On WhatsApp, Business account, WhatsApp profile, WhatsApp ID and 2 more. ZelNum's docs list none of the 6. - Request: `POST https://api.zelnum.com/api/v1/realtime/check/{series}` - API key: With the plan, on zelnum.com - On 14 November 2026, we sent this provider all 32 numbers in our benchmark. - Rate limit: the provider's pages don't give one 3. [Listar, top-up from €10: WhatsApp number check API](https://datacircle.dev/check-whatsapp-apis/listar/top-up-from-10): Overall score 63.1 (Price 4, Accuracy 100, Cost to get started 92, Bundle 86, Performance 100), $22.51 per 1,000 phones - We check each provider's docs for 6 fields. Listar's docs list 3: On WhatsApp, Business account, WhatsApp profile. - Request: `POST https://api.listar.fr/search/verify-whatsapp` - API key: With the plan, on listar.fr - On 14 November 2026, we sent this provider all 32 numbers in our benchmark. - Rate limit: 60 calls a minute ## Best WhatsApp number check API for each need Of the 4 WhatsApp number check API providers ranked in the Datacircle benchmark: - Best for the lowest price per 1,000 phones: [NumRadar](https://datacircle.dev/check-whatsapp-apis/numradar/249-monthly-enterprise-post-validate), at $0.93. For price, we leave out providers that score below half the top Accuracy score. - Best for the most accurate answers: [NumRadar](https://datacircle.dev/check-whatsapp-apis/numradar/249-monthly-enterprise-post-validate), [ZelNum](https://datacircle.dev/check-whatsapp-apis/zelnum/200-pack-pay-as-you-go-200-top-up-post-realtime-check-series) and [Listar](https://datacircle.dev/check-whatsapp-apis/listar/top-up-from-10), with an accuracy score of 100 out of 100. - Best for the lowest cost to get your first result: [Listar](https://datacircle.dev/check-whatsapp-apis/listar/top-up-from-10). - Best for the most endpoints on one plan: [ZelNum](https://datacircle.dev/check-whatsapp-apis/zelnum/200-pack-pay-as-you-go-200-top-up-post-realtime-check-series). - Best for the fastest answers: [Listar](https://datacircle.dev/check-whatsapp-apis/listar/top-up-from-10), with a typical answer in 0.47 seconds. - Best for the most fields in each answer: [NumRadar](https://datacircle.dev/check-whatsapp-apis/numradar/249-monthly-enterprise-post-validate) and [ProWebLook](https://datacircle.dev/check-whatsapp-apis/proweblook/320-monthly-whatsapp-monthly-100k-get-wavalidation). Each of their docs lists 4 of our 6 key fields. ## How we tested Between 27 October and 14 November 2026, we sent 4 providers the same list of 32 numbers, or fewer. Price and Accuracy weigh most in each plan's Overall score. We score all 4 providers and rank them by their top plan's Overall score. [How we score each plan](https://datacircle.dev/faq#how-do-you-score-each-plan) ## Questions about WhatsApp number check APIs ### What is a WhatsApp number check API? A WhatsApp number check API takes a phone number. The API returns whether the number is on WhatsApp. Our price sheet lists 384 WhatsApp number check API plans from 38 providers. ### What is the best WhatsApp number check API? [NumRadar](https://datacircle.dev/check-whatsapp-apis/numradar/249-monthly-enterprise-post-validate) is the best WhatsApp number check API in the Datacircle benchmark. NumRadar's €249 monthly plan has an Overall score of 73.6 out of 100. [ZelNum](https://datacircle.dev/check-whatsapp-apis/zelnum/200-pack-pay-as-you-go-200-top-up-post-realtime-check-series) is second at 66.4 and [Listar](https://datacircle.dev/check-whatsapp-apis/listar/top-up-from-10) third at 63.1. ### What is the cheapest WhatsApp number check API? [NumRadar's €249 monthly plan](https://datacircle.dev/check-whatsapp-apis/numradar/249-monthly-enterprise-post-validate) costs the least per 1,000 phones in our ranking: $0.93. [Wawp's €39 yearly plan](https://datacircle.dev/check-whatsapp-apis/wawp/39-yearly) costs less: about $3.66 for 10,000 phones a month. We haven't tested Wawp yet. ### How much does a WhatsApp number check API cost? Our price sheet lists 384 WhatsApp number check API plans. We rank 99 of them by price. Half of the ranked plans cost $3.20 or less per 1,000 phones. Monthly subscriptions are the most common: 150 of the 384 plans. 32 plans are free, and 22 show a price only when you ask. ### Is there a free WhatsApp number check API? Yes: 32 WhatsApp number check API plans on our price sheet are free. [ZelNum](https://datacircle.dev/check-whatsapp-apis/zelnum/free) has a free plan. ZelNum is the second best WhatsApp number check API in our benchmark. [Wappi's free plan](https://datacircle.dev/check-whatsapp-apis/wappi/free-trial-5-days-get-api-sync-contact-check) has no limit on calls. ### Which is better, NumRadar or ZelNum? [NumRadar](https://datacircle.dev/check-whatsapp-apis/numradar/249-monthly-enterprise-post-validate) scores higher overall, at 73.6 against [ZelNum](https://datacircle.dev/check-whatsapp-apis/zelnum/200-pack-pay-as-you-go-200-top-up-post-realtime-check-series)'s 66.4 in our benchmark. ZelNum scores higher on Bundle, at 98 against NumRadar's 0. [NumRadar vs ZelNum](https://datacircle.dev/numradar-vs-zelnum) compares the two side by side. ### Can I use WhatsApp number check API data? Each provider's terms decide what you can do with WhatsApp number check API data. We rank 4 WhatsApp number check API providers. All 4 have API terms. All 4 set no time limit on keeping the data. All 4 set conditions on how you use the data. Each plan's page shows what the provider's terms say about keeping and using the data. ### How do I call a WhatsApp number check API? [NumRadar](https://datacircle.dev/check-whatsapp-apis/numradar/249-monthly-enterprise-post-validate) is the best WhatsApp number check API in the Datacircle benchmark. You send `phone` to `POST https://api.numradar.app/v1/validate`. You set the `Content-Type` header to "application/json". Add the API key from your plan on numradar.app. NumRadar's [API docs](https://numradar.app/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=best-whatsapp-number-check-api) explain each input. ### How did you test WhatsApp number check APIs? Between 27 October and 14 November 2026, we sent 4 providers the same list of 32 numbers, or fewer. The Accuracy score on WhatsApp number check APIs: How often the call is right about whether a number is on WhatsApp, out of 100. A number is on WhatsApp when an organisation's own website links it as its WhatsApp. A made-up number from a range the phone regulators keep for films and books is not on WhatsApp, and a call that refuses it is right. Numbers on WhatsApp count for half the score and made-up numbers for the other half. Some providers have results on only part of the numbers. We compare each provider that checked only some numbers with the providers that checked all numbers. We lower the score when we test the call on fewer numbers than the benchmark has. ## Top WhatsApp number check API providers by score 1. [NumRadar, €249 monthly, Enterprise](https://datacircle.dev/check-whatsapp-apis/numradar/249-monthly-enterprise-post-validate) ([alternatives](https://datacircle.dev/numradar-alternatives)): Overall score 73.6, Accuracy score 100, median answer time 0.82 s, $0.93 per 1,000 phones 2. [ZelNum, $200 pack, Pay as you go, $200 top-up](https://datacircle.dev/check-whatsapp-apis/zelnum/200-pack-pay-as-you-go-200-top-up-post-realtime-check-series) ([alternatives](https://datacircle.dev/zelnum-alternatives)): Overall score 66.4, Accuracy score 100, median answer time 0.62 s, $7.27 per 1,000 phones 3. [Listar, top-up from €10](https://datacircle.dev/check-whatsapp-apis/listar/top-up-from-10) ([alternatives](https://datacircle.dev/listar-alternatives)): Overall score 63.1, Accuracy score 100, median answer time 0.47 s, $22.51 per 1,000 phones 4. [ProWebLook, $320 monthly, WhatsApp Monthly 100K](https://datacircle.dev/check-whatsapp-apis/proweblook/320-monthly-whatsapp-monthly-100k-get-wavalidation) ([alternatives](https://datacircle.dev/proweblook-alternatives)): Overall score 50.5, Accuracy score 90, median answer time 1.8 s, $3.20 per 1,000 phones We haven't benchmarked 16 other WhatsApp number check API providers yet: - [2Chat](https://datacircle.dev/check-whatsapp-apis/2chat/100-pack-extra-requests-package-get-open-whatsapp-check-number-your-number-number-to-check-check-number-full) ([alternatives](https://datacircle.dev/2chat-alternatives)) - [CheckNumber.AI](https://datacircle.dev/check-whatsapp-apis/checknumber-ai/top-up-from-20-pay-as-you-go-post-v1-tasks-whatsapp-checker) ([alternatives](https://datacircle.dev/checknumber-ai-alternatives)) - [Credify](https://datacircle.dev/check-whatsapp-apis/credify/contact-us) ([alternatives](https://datacircle.dev/credify-alternatives)) - [Fonnte](https://datacircle.dev/check-whatsapp-apis/fonnte/2-50-monthly) ([alternatives](https://datacircle.dev/fonnte-alternatives)) - [iBlueText](https://datacircle.dev/check-whatsapp-apis/ibluetext/top-up) ([alternatives](https://datacircle.dev/ibluetext-alternatives)) - [Nock](https://datacircle.dev/check-whatsapp-apis/nock/r-299-monthly) ([alternatives](https://datacircle.dev/nock-alternatives)) - [NumDetect](https://datacircle.dev/check-whatsapp-apis/numdetect/499-90-pack-scale-post-api-v1-checks-single-check-whatsapp) ([alternatives](https://datacircle.dev/numdetect-alternatives)) - [Rapiwa](https://datacircle.dev/check-whatsapp-apis/rapiwa/40-monthly) ([alternatives](https://datacircle.dev/rapiwa-alternatives)) - [StarSender](https://datacircle.dev/check-whatsapp-apis/starsender/rp599000-pack) ([alternatives](https://datacircle.dev/starsender-alternatives)) - [Tamz](https://datacircle.dev/check-whatsapp-apis/tamz/r-100-pack) ([alternatives](https://datacircle.dev/tamz-alternatives)) - [uazapi](https://datacircle.dev/check-whatsapp-apis/uazapi/r-29-monthly) ([alternatives](https://datacircle.dev/uazapi-alternatives)) - [WA Validator](https://datacircle.dev/check-whatsapp-apis/wa-validator/49-99-pack-plus-post-api-v1-bulk-check) ([alternatives](https://datacircle.dev/wa-validator-alternatives)) - [WaliChat](https://datacircle.dev/check-whatsapp-apis/walichat/99-90-monthly) ([alternatives](https://datacircle.dev/walichat-alternatives)) - [WAME API](https://datacircle.dev/check-whatsapp-apis/wame-api/59-90-monthly) ([alternatives](https://datacircle.dev/wame-api-alternatives)) - [WbizTool](https://datacircle.dev/check-whatsapp-apis/wbiztool/149-monthly-advanced-post-verification-create) ([alternatives](https://datacircle.dev/wbiztool-alternatives)) - [Wtsp](https://datacircle.dev/check-whatsapp-apis/wtsp/top-up-from-1-api-key-credit-post-v1-bulk-bulk-whatsapp-check) ([alternatives](https://datacircle.dev/wtsp-alternatives)) We don't rank 18 other WhatsApp number check API providers. Their plans run on your own account: - [Green API](https://datacircle.dev/check-whatsapp-apis/green-api/12-monthly) ([alternatives](https://datacircle.dev/green-api-alternatives)) - [Maytapi](https://datacircle.dev/check-whatsapp-apis/maytapi/29-monthly) ([alternatives](https://datacircle.dev/maytapi-alternatives)) - [MegaAPI](https://datacircle.dev/check-whatsapp-apis/megaapi/r-69-90-monthly) ([alternatives](https://datacircle.dev/megaapi-alternatives)) - [Periskope](https://datacircle.dev/check-whatsapp-apis/periskope/35-monthly) ([alternatives](https://datacircle.dev/periskope-alternatives)) - [UltraMsg](https://datacircle.dev/check-whatsapp-apis/ultramsg/39-monthly) ([alternatives](https://datacircle.dev/ultramsg-alternatives)) - [WaAPI](https://datacircle.dev/check-whatsapp-apis/waapi/10-monthly) ([alternatives](https://datacircle.dev/waapi-alternatives)) - [Wablas](https://datacircle.dev/check-whatsapp-apis/wablas/2-monthly) ([alternatives](https://datacircle.dev/wablas-alternatives)) - [Wappi](https://datacircle.dev/check-whatsapp-apis/wappi/700-monthly-whatsapp-basic-1-month-get-api-sync-contact-check) ([alternatives](https://datacircle.dev/wappi-alternatives)) - [WasapFlow](https://datacircle.dev/check-whatsapp-apis/wasapflow/10-monthly) ([alternatives](https://datacircle.dev/wasapflow-alternatives)) - [WasenderAPI](https://datacircle.dev/check-whatsapp-apis/wasenderapi/6-monthly) ([alternatives](https://datacircle.dev/wasenderapi-alternatives)) - [Wassenger](https://datacircle.dev/check-whatsapp-apis/wassenger/39-90-monthly) ([alternatives](https://datacircle.dev/wassenger-alternatives)) - [Wawp](https://datacircle.dev/check-whatsapp-apis/wawp/9-monthly) ([alternatives](https://datacircle.dev/wawp-alternatives)) - [Whapi.Cloud](https://datacircle.dev/check-whatsapp-apis/whapi-cloud/35-monthly) ([alternatives](https://datacircle.dev/whapi-cloud-alternatives)) - [WhatsMCP](https://datacircle.dev/check-whatsapp-apis/whatsmcp/10-monthly) ([alternatives](https://datacircle.dev/whatsmcp-alternatives)) - [WhatsScale](https://datacircle.dev/check-whatsapp-apis/whatsscale/5-monthly) ([alternatives](https://datacircle.dev/whatsscale-alternatives)) - [Woowa](https://datacircle.dev/check-whatsapp-apis/woowa/14-monthly) ([alternatives](https://datacircle.dev/woowa-alternatives)) - [WSAPI](https://datacircle.dev/check-whatsapp-apis/wsapi/5-monthly-single-instance-post-users-check) ([alternatives](https://datacircle.dev/wsapi-alternatives)) - [Z-API](https://datacircle.dev/check-whatsapp-apis/z-api/r-99-99-monthly-plano-ultimate-post-instances-instanceid-token-token-phone-exists-batch) ([alternatives](https://datacircle.dev/z-api-alternatives)) ## WhatsApp number check API calls by name ### WhatsApp number check API batch and bulk calls 4 WhatsApp number check API providers have a call named for batches or bulk: - [NumDetect: Bulk check, WhatsApp](https://datacircle.dev/check-whatsapp-apis/numdetect/19-90-pack-basic-post-api-v1-bulk-jobs-bulk-check-whatsapp) - [ProWebLook: WhatsApp Batch Submit](https://datacircle.dev/check-whatsapp-apis/proweblook/320-monthly-whatsapp-monthly-100k-post-wavalidation-batch) - [WA Validator: Bulk Check](https://datacircle.dev/check-whatsapp-apis/wa-validator/49-99-pack-plus-post-api-v1-bulk-check) - [Wtsp: Bulk WhatsApp check](https://datacircle.dev/check-whatsapp-apis/wtsp/top-up-from-1-api-key-credit-post-v1-bulk-bulk-whatsapp-check) ### WhatsApp number check API calls with "check" in the name 9 WhatsApp number check API providers have a call with "check" in the name: - [2Chat: Check Number, full](https://datacircle.dev/check-whatsapp-apis/2chat/100-pack-extra-requests-package-get-open-whatsapp-check-number-your-number-number-to-check-check-number-full) - [CheckNumber.AI: WhatsApp Checker](https://datacircle.dev/check-whatsapp-apis/checknumber-ai/top-up-from-20-pay-as-you-go-post-v1-tasks-whatsapp-checker) - [NumDetect: Single check, WhatsApp](https://datacircle.dev/check-whatsapp-apis/numdetect/499-90-pack-scale-post-api-v1-checks-single-check-whatsapp) - [NumRadar: Check one number](https://datacircle.dev/check-whatsapp-apis/numradar/249-monthly-enterprise-post-validate) - [WA Validator: Bulk Check](https://datacircle.dev/check-whatsapp-apis/wa-validator/49-99-pack-plus-post-api-v1-bulk-check) - [WAME API: Check if number is on WhatsApp](https://datacircle.dev/check-whatsapp-apis/wame-api/59-90-monthly) - [WbizTool: Start a check](https://datacircle.dev/check-whatsapp-apis/wbiztool/149-monthly-advanced-post-number-checks) - [Wtsp: Bulk WhatsApp check](https://datacircle.dev/check-whatsapp-apis/wtsp/top-up-from-1-api-key-credit-post-v1-bulk-bulk-whatsapp-check) - [ZelNum: WhatsApp Number Checker (realtime)](https://datacircle.dev/check-whatsapp-apis/zelnum/200-pack-pay-as-you-go-200-top-up-post-realtime-check-series) ## WhatsApp number check API calls that send results to a webhook 2 WhatsApp number check API providers can send the results to your own URL (a webhook): - [NumDetect: Bulk check, WhatsApp](https://datacircle.dev/check-whatsapp-apis/numdetect/19-90-pack-basic-post-api-v1-bulk-jobs-bulk-check-whatsapp) - [NumRadar: Submit a list](https://datacircle.dev/check-whatsapp-apis/numradar/249-monthly-enterprise-post-bulk) ## WhatsApp number check API comparison: how we tested each provider, and what each one costs ### [NumRadar](https://datacircle.dev/check-whatsapp-apis/numradar/249-monthly-enterprise-post-validate), #1 of 4 We tested NumRadar on 6 and 14 November 2026 with all 32 numbers. In the Datacircle benchmark, NumRadar scored 73.6 out of 100 overall and 100 out of 100 for accuracy. Best for: the lowest price per 1,000 phones. For price, we leave out providers that score below half the top Accuracy score. Price on the cheapest plan for each number of phones: - 1,000 phones: $10.13 a month with NumRadar's Starter plan - 10,000 phones: $32.63 a month with NumRadar's Growth plan - 100,000 phones: $111.40 a month with NumRadar's Business plan - 1,000,000 phones: $1,060 a month with NumRadar's Enterprise plan NumRadar's results in our benchmark: - Numbers checked: Right 32 of 32 · Wrong 0 of 32 · No answer 0 of 32 - Time per number: Median 0.82 s · 10th percentile 0.64 s · 90th percentile 3.53 s · Fastest 0.04 s · Slowest 6.74 s · Baseline 0.17 s - The check call: Call POST api.numradar.app/v1/validate (phone, the number with its +) · Charged per number $0.002, nothing when the number fails its local check ### [ZelNum](https://datacircle.dev/check-whatsapp-apis/zelnum/200-pack-pay-as-you-go-200-top-up-post-realtime-check-series), #2 of 4 We tested ZelNum on 14 November 2026 with all 32 numbers. In the Datacircle benchmark, ZelNum scored 66.4 out of 100 overall and 100 out of 100 for accuracy. Best for: the most accurate answers. NumRadar and Listar are as accurate as ZelNum. Price on the cheapest plan for each number of phones: - 1,000 phones: $100 paid once, enough for 13.1 months ($7.63 a month), with ZelNum's Pay as you go, $100 top-up - 10,000 phones: $1,000 paid once, enough for 15 months ($66.67 a month), with ZelNum's Pay as you go, $1,000 top-up - 100,000 phones: $2,000 paid once, enough for 3.1 months ($645.16 a month), with ZelNum's Pay as you go, $2,000 top-up - 1,000,000 phones: no plan gives a price ZelNum's results in our benchmark: - Numbers checked: Right 32 of 32 · Wrong 0 of 32 · No answer 0 of 32 - Time per number: Median 0.62 s · 10th percentile 0.59 s · 90th percentile 1.43 s · Fastest 0.01 s · Slowest 2.51 s · Baseline 0.11 s - The check call: Call POST api.zelnum.com/api/v1/realtime/check/phone (identifier, the number in E.164, and product_ids [47]) · Charged per number $0.0076, nothing when it turns the number away (HTTP 400) or answers unknown ### [Listar](https://datacircle.dev/check-whatsapp-apis/listar/top-up-from-10), #3 of 4 We tested Listar on 14 November 2026 with all 32 numbers. In the Datacircle benchmark, Listar scored 63.1 out of 100 overall and 100 out of 100 for accuracy. Best for: the most accurate answers. NumRadar and ZelNum are as accurate as Listar. Price on the cheapest plan for each number of phones: - 1,000 phones: $22.51 a month with Listar's Starter top-up - 10,000 phones: $1,125.30 paid once, enough for 5.6 months ($200.95 a month), with Listar's Silver top-up - 100,000 phones: $11,253 paid once, enough for 6.3 months ($1,786.19 a month), with Listar's Gold top-up - 1,000,000 phones: $281,325 paid once, enough for 24 months ($11,721.88 a month), with Listar's Elite top-up Listar's results in our benchmark: - Numbers checked: Right 32 of 32 · Wrong 0 of 32 · No answer 0 of 32 - Time per number: Median 0.47 s · 10th percentile 0.03 s · 90th percentile 0.59 s · Fastest 0.03 s · Slowest 0.63 s · Baseline 0.12 s - The check call: Call POST api.listar.fr/search/verify-whatsapp (phones, the number with its +, one a call) · Charged per number $0.0225, nothing when its answer is null ### [ProWebLook](https://datacircle.dev/check-whatsapp-apis/proweblook/320-monthly-whatsapp-monthly-100k-get-wavalidation), #4 of 4 We tested ProWebLook on 27 October and 14 November 2026 with 15 of the 32 numbers. In the Datacircle benchmark, ProWebLook scored 50.5 out of 100 overall and 90 out of 100 for accuracy. ProWebLook's best rank is #2, for price. Price on the cheapest plan for each number of phones: - 1,000 phones: $120 paid once, enough for 20 months ($6 a month), with ProWebLook's WhatsApp One-Time 20K pack - 10,000 phones: $400 paid once, enough for 10 months ($40 a month), with ProWebLook's WhatsApp One-Time 100K pack - 100,000 phones: $3,072 a year paid up front with ProWebLook's WhatsApp Annual 100K plan - 1,000,000 phones: no plan gives a price ProWebLook's results in our benchmark: - Numbers checked: Right 15 of 15 · Wrong 0 of 15 · No answer 0 of 15 - Time per number: Median 1.81 s · 10th percentile 1.26 s · 90th percentile 2.79 s · Fastest 0.50 s · Slowest 3.60 s · Baseline 0.28 s - The check call: Call GET lookup.proweblook.com/api/v1/wavalidation (phone_number, the number with its +) · Charged per number $0.016. Some misses are free and others cost the same as a hit By Wayne Hamadi, founder of Datacircle. We don't sell any API. No provider has paid us to rank higher on this page. First published November 14, 2026. Last updated: November 14, 2026. The page: https://datacircle.dev/best-whatsapp-number-check-api. Every plan: https://datacircle.dev/whatsapp-number-check-api-pricing. The benchmark: https://datacircle.dev/whatsapp-number-check-api-pricing/benchmark.csv. You may reuse this ranking under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Credit Datacircle with a link to https://datacircle.dev/best-whatsapp-number-check-api.