Products
AI Benchmark
Desktop
Mobile
Monthly visits
<5K
Sep 2026
Public revenue
Undisclosed
No public revenue evidence yet
Entry price
Usage-based
No monthly subscription pricing
Creators
Ryan YANG
No social account linkedCo-created with yaho
Launched
55d ago
2026-09-20 · Est.

Traffic

Last 12 months
Monthly visitsData through Sep 2026 · Oct 2026 pending
Events6 marketing moves

Marketing moves

Launches, search & content, referrals, promotions

  • Launched on OpenHunts (26 upvotes)Launch

    Zelnum — Check WhatsApp, Telegram, and phone numbers to detect VoIP risk and clean CRM lists.

    Nov 9 · 5d agoLaunch page

  • Launched on Findly.toolsLaunch

    ZelNum — Check WhatsApp and Telegram registration, validate phone numbers, and clean contact lists with single lookups, bulk uploads, or an API.

    Oct 20 · 25d agoLaunch page

    At the time: <5K visits/mo5 concurrent moves

  • Launched on Microlaunch (#102)Launch

    ZelNum helps you verify phone numbers and work with cleaner contact data. Its Phone Validator checks number format and status, adds available country, carrier and line-type details, and flags invalid or potentially risky records. WhatsApp and Telegram checks show whether a number is registered on each platform. Use th…

    Oct 20 · 25d agoLaunch page

    At the time: <5K visits/mo5 concurrent moves

  • Launched on DevHunt (2 upvotes · 2 comments)Launch

    ZelNum — Verify phone & email in bulk online or via API — WhatsApp, Telegram, Binance.

    Oct 13 · 32d agoLaunch page

    At the time: <5K visits/mo5 concurrent moves

  • Launched on Fazier (#182 · 14 upvotes · 2 comments)Launch

    ZelNum — Bulk & realtime WhatsApp, phone & email verification

    Oct 12 · 33d agoLaunch page

    At the time: <5K visits/mo5 concurrent moves

Third-party reviews & case dossiers

Acquisition breakdowns, engineer reviews & open-source metrics
Fazier
2026-10-12Source
What engineers like:
• 58 check tools (45 phone + 13 email) covering WhatsApp, Telegram, and major platforms • Bulk CSV list cleaning and realtime single-lookup API • Carrier and line-type detection (VoIP / virtual / landline) with risky-record flagging • No-code dashboard plus REST API for developers • $1 free trial credit with pay-as-you-go pricing
Best suited for:
• Clean CRM and marketing lists before campaigns to cut bounces and protect sender reputation • Verify numbers at signup to block fake accounts and fraud • Check WhatsApp / Telegram reachability before cold outreach • Screen and validate customer contact databases in bulk
Findly.tools
2026-10-20Source
What engineers like:
ZelNum helps teams clean phone and email contact lists before CRM imports, messaging campaigns, and risk reviews. Start with a single lookup in the browser, upload a CSV or TXT file for bulk checks, or connect the API to an existing workflow. Check whether numbers are registered with WhatsApp or Telegram, then use phone validation, carrier lookup, HLR, and line-type checks to add context. Separate products support registration checks for other messaging apps, social platforms, and services such as Facebook, Instagram, Apple ID, and Amazon. Available fields depend on the check selected. Bulk jobs return downloadable results that can be filtered into useful segments. The API supports asynchronous jobs: submit records, poll the task status, and download the output. Supported products also offer paid real-time single lookups. Free browser tools cover basic phone format, carrier, and line-type checks without signup. Bulk and paid API checks use prepaid credits with pay-as-you-go pricing, no monthly subscription, and product-specific minimum order sizes. See the official pricing page for current rates and minimums. Registration checks do not send messages to the numbers being checked or access private conversations. Use ZelNum with contact data you are authorized to process.

Open Source & Self-Hosting

GitHub · MCP / Skill
Zelnum/zelnum-python
GitHub Stars
Public repo
Forks
—
License
MIT
Primary language
Python
Browse peer open-source projects →

Traffic sources

Sep 2026

Traffic breakdown

Channels

  • Direct32%
  • Organic Search27%
  • Referrals12%
  • Display Ads8%
  • Other21%

Countries

  • United States64%
  • India23%
  • Pakistan14%

Search

Domain authority —Domain registered 2026-07-23

KeywordMonthly volume
instagram email checker330
kucoin email checker220
voip check160
bulk phone number checker across140
apple imessage checker110

Traffic data: Vaneform

Pricing

Usage-based pricing; no fixed plans listed on website.

Trial: None · Observed 2026-11-03 · Pricing page

Pages & changes

Tracked since 2026-09-20

Key pages

Weekly snapshots

Changes

No pricing, plan, or positioning changes detected since tracking started.

Questions & evidence

How much website traffic does Zelnum get?
Vaneform estimates <5K website visits in 2026-09. Visits can include repeat visits; this estimate measures web traffic separately from paying customers or revenue.Source
What is Zelnum and what platforms does it support?
Zelnum is catalogued under Fraud Prevention & Verification: Why zelnum.com. Supported platforms: API.
Is Zelnum open source?
Zelnum has a public repository (https://github.com/Zelnum/zelnum-python) under the MIT license.Source

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Security & Privacy / Fraud Prevention & Verification

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