APIs & SDKs
CheckNumber.AI
Bulk phone number and email verification across 50+ platforms via API or no-code CSV upload
Verify phone numbers and emails across 50+ platforms including WhatsApp, Telegram, Binance and more using a no-code platform or REST API.
Overview
The CheckNumber.AI homepage
CheckNumber.AI is a multi-platform phone number and email verification service for businesses and developers. The platform offers three ways to verify: a free online tool to check single numbers instantly without login, bulk verification by uploading CSV or TXT files, and a REST API for integration into CRMs and automation workflows. It supports 50+ platforms across messaging apps (WhatsApp, Telegram, Viber, LINE, Zalo, Signal), social networks (Facebook, Instagram, Twitter/X, TikTok), e-commerce platforms (Amazon, Netflix), cryptocurrency exchanges (Binance, KuCoin, HTX), and carrier detection across 200+ countries. All checks run in real time against each platform's servers with no cached data, and results can be exported as CSV for CRM integration.
Capabilities
- Real-time verification against 50+ platforms
- No-code CSV/TXT upload interface
- REST API for automation and integration
- Support for 200+ countries
- Platform-specific detectors for messaging, social, crypto and carriers
- Activity detection (days active, last seen, profile data)
- Free single number checker tool
- Pay-as-you-go with no monthly fees
Pricing
Pricing model: Paid
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CheckNumber.AI fact sheet
| Community votes | 0 |
|---|---|
| Website | checknumber.ai |
CheckNumber.AI metrics
Vendor metrics for checknumber.ai: Ahrefs Domain Rating and Majestic link data, with the delta since the last review.
- Domain Rating
- 37
- no change since last check
- Trust Flow
- 6
- no change since last check
- Citation Flow
- 44
- no change since last check
- Referring domains
- 42
- no change since last check
- External backlinks
- 9,034
- no change since last check
Vendor Domain Rating (Ahrefs) checked 6 Nov 2026, spec changed 25 Oct 2026. Vendor topic: Computers/Internet/Web Design and Development (6). Vendor Majestic data checked 25 Oct 2026, spec changed 25 Oct 2026. Link metrics supplied by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
CheckNumber.AI vendor domain
Open the vendor record
We read this from the registry's RDAP record on 5 Nov 2026, 23:31 UTC.
- Domain age
- 2 years
- Registered
- Expires
- Registrar
- NameCheap, Inc.
- DNSSEC
- Not signed
CheckNumber.AI post-launch report
| Measure | At launch, then latest |
|---|---|
| Domain Rating (Ahrefs) | 37 to 37 no change since launch 25 Oct 2026, then 6 Nov 2026 |
| Trust Flow (Majestic) | 6 first measured 25 Oct 2026 |
| Referring domains (Majestic) | 42 first measured 25 Oct 2026 |
Day 11 since launch. Next receipt: day 30, 24 Nov 2026. Many things move these figures, so a change is not proof of cause. Only stored readings are shown.
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Buyer questions
Which platforms does CheckNumber.AI support?
CheckNumber.AI supports 50+ platforms across five categories: messaging apps (WhatsApp, Telegram, Viber, LINE, Zalo, iMessage, RCS, Signal, Messenger), social networks (Facebook, Instagram, Twitter/X, Threads, Snapchat, Microsoft), e-commerce and streaming (Amazon, Apple, Netflix, Spotify), cryptocurrency exchanges (Binance, KuCoin, HTX, CoinW), and phone carrier detection. Each detector works by phone number, and several also work by email address.
How do I bulk check WhatsApp or other numbers — API or no-code?
Both options are available for WhatsApp and all 50+ supported platforms. Upload a CSV or TXT file directly through the web platform for a no-code workflow, or integrate via REST API for automation. The system checks each number in real time.
How accurate are WhatsApp and multi-platform verification results?
All checks are performed live against the target platform with never cached or stale data, so results reflect the account's status at the moment of the check. A registration check returns whether the number or email is registered, while activity or profile checks return additional signals directly from each platform.
Is there a free trial?
Yes, new users can get 1,000 free trial checks. The platform also offers a free tool to check a single WhatsApp or phone number without login or registration.
How fast is the bulk WhatsApp and phone number verification process?
Our WhatsApp and multi-platform verification system checks in real time against each platform's servers, ensuring high-accuracy results. Processing speed varies by platform due to their rate limits. Upload your list and results are returned as they complete.
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CheckNumber.AI has a free listing. The owner can unlock the full profile with a paid launch for $5:
- Founder story (locked)
- Milestones (locked)
- Demo video (locked)
- Dofollow website link (locked)
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