Fact sheet · APIs & SDKs
ZelNum
Phone number, carrier, and messaging app verification platform for contact list cleaning and fraud review
ZelNum verifies phone numbers, carrier data, and messaging app registration across WhatsApp, Telegram, and other platforms. Teams use it to clean contact lists
Overview
ZelNum is a bulk verification platform that checks phone numbers, email addresses, and account identifiers for registration signals across messaging apps and social platforms. The service supports single lookups, bulk CSV/TXT file uploads, and API integration for automated workflows.
The platform returns data-quality signals including phone validity, carrier information, country and region, line type (mobile/landline), and registration status for WhatsApp, Telegram, Facebook, Instagram, Apple ID, Amazon, LinkedIn, X, and other platforms. It does not send messages, read private account content, or prove identity.
ZelNum serves CRM operators, data quality teams, fraud and risk reviewers, compliance teams, and developers building validation workflows. Customers must have lawful basis and required consent to process submitted data. The service is designed for contact list hygiene, CRM cleaning, and operational risk review — not for unsolicited outreach or spam.
Feature facts
- Bulk CSV/TXT file upload and processing
- VoIP and disposable number detection
- Real-time single lookups and batch API jobs
Pricing
Pricing model: Paid
Pay-as-you-go prepaid credits. WhatsApp: $0.5 per 10,000 lookups (bulk) or $0.008 per lookup (realtime). Telegram: $1.5 per 10,000 lookups (bulk) or $0.012 per lookup (realtime). HLR Lookup: $4 per 10,000 lookups. Carrier Lookup: $4 per 10,000 lookups. No subscription, minimum order 500–2,000 depend
Follow ZelNum: their milestones, new launches and awards come to you by email, once a day by default.
ZelNum specifications
| Section | APIs & SDKs |
|---|---|
| Origin | Estonia |
| Website | zelnum.com |
| Votes2 | 0 |
ZelNum metrics
| Metric | Value |
|---|---|
| Domain Rating | 18 +1 (up) since last check |
| Trust Flow | 15 no change since last check |
| Citation Flow | 29 no change since last check |
| Referring domains | 19 no change since last check |
| External backlinks | 6,553 no change since last check |
Fact: Ahrefs Domain Rating checked 12 Nov 2026, fact changed 4 Nov 2026. Fact: top topic Computers/Software/Operating Systems (14). Fact: Majestic checked 25 Oct 2026, fact changed 25 Oct 2026. Link facts from Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
ZelNum domain fact sheet
Open the fact sheet
| Domain age | 3 months |
|---|---|
| Registered | |
| Expires | |
| Registrar | Cloudflare, Inc. |
| DNSSEC | Not signed |
ZelNum launch receipt sheet
What we have measured for ZelNum since it went live on SaaS Directory Info on 25 October 2026.
- 18 Domain Rating (Ahrefs) +5 (up) since launch
at launch: 13 (25 Oct 2026); latest: 11 Nov 2026 - 15 Trust Flow (Majestic)
first measured 25 Oct 2026 - 19 Referring domains (Majestic)
first measured 25 Oct 2026
Day 17 since launch. Next receipt: day 30, 24 Nov 2026. The figures report a change; they do not say what caused it, and many things can. No figure here is a guess.
Got a launch coming up?
Step-by-step tips for before, during and after your launch, free to read on SaaS Directory Info.
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Frequently looked up
- Q1What platforms do you support?
- ZelNum supports phone validation, carrier lookup, messaging apps such as WhatsApp and Telegram, account-signal checks, and CSV list cleaning for data you are authorised to process.
- Q2Can I try for free?
- Yes. You can start with free single-number tools before moving to bulk files or API workflows.
- Q3Is bulk upload supported?
- Yes. CSV and TXT uploads are supported for bulk verification workflows, with segmented result downloads for valid, inactive, risky, and enriched records.
- Q4Do you have an API?
- Yes. API pages are available for phone validation, carrier lookup, WhatsApp checks, and Telegram checks.
- Q5How accurate is the data?
- Accuracy depends on the platform, country, and data source. Results are designed for list cleaning, segmentation, risk review, and operational decision-making.
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ZelNum 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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