
CheckNumber.AI
WAChecker by WADesk
numberchecker.ai
Numverify
WA-Filter
Lookup by Twilio
Veriphone
Turn CSV/TXT lists into actionable segments with phone validation, carrier and HLR intelligence, messaging-app, social-account, and crypto-exchange checks, plus API workflows.

Automated software dependency project health tracking

Which is more popular?
Based on our record, Deadpendency seems to be more popular. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | zelnum.com | deadpendency.com |
| Pricing | ||
| Platforms | — | |
| Company | 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


ZelNum is a self-service bulk verification and data-quality platform for phone intelligence, messaging apps, social and consumer accounts, and crypto exchanges. Upload CSV or TXT lists to check phone status, live activity, carrier and line type, HLR-style network signals, phone model, and...
No description of Deadpendency yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing ZelNum and Deadpendency.
ZelNum's answer
ZelNum supports multiple verification types, usage-based pricing, downloadable result segments, and task-based API processing without requiring a subscription.
ZelNum's answer
Marketing teams, CRM operators, developers, agencies, community managers, and businesses that need to clean or enrich large contact lists.
ZelNum's answer
ZelNum combines phone validation, carrier lookup, WhatsApp and Telegram checks, and other account signals in one bulk CSV/TXT and API workflow.
Share your experience with using ZelNum and Deadpendency. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking ZelNum since Jul 2026.
I created a tiny startup in Haskell which failed RIP. I decided to open source the code though. Source: over 3 years ago
I sometimes stream my Haskell work on deadpendency - https://www.twitch.tv/alistairbuzz. Source: over 5 years ago
When comparing ZelNum and Deadpendency, you can also consider the following products.

CheckNumber.AI provides professional and free WhatsApp number check online service, and provides a professional WhatsApp Number Checker API that can quickly check and detect WhatsApp number in bulk.
Compare CheckNumber.AI to ZelNum or Deadpendency:

Bulk WhatsApp number checker and validator for verifying WhatsApp numbers, reviewing results, and exporting contacts.
Compare WAChecker by WADesk to ZelNum or Deadpendency:
Bulk Check & Filter Number List(WhatsApp、Telegram、instagram、Facebook、Amazon、Apple)
Compare numberchecker.ai to ZelNum or Deadpendency:

Global phone number validation and lookup API
Compare Numverify to ZelNum or Deadpendency:

Filter valid and invalid WhatsApp numbers effortlessly with WA-Filter, the ultimate Chrome Extension for accurate number identification and efficient contact management.
Compare WA-Filter to ZelNum or Deadpendency:
Know the details behind every phone number
Compare Lookup by Twilio to ZelNum or Deadpendency: