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ValidNum - Bulk WhatsApp Number Validator & Checker

Chrome extension by Devainer Extensions · Productivity · Workflow

  • Established publisher

A Chrome extension in Productivity · Workflow with 27 users, barely installed. Audience over the last 30 days: -1.

Specific sites only: 2 match patterns.

What the developer says, and 5 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
27
Rating
5.0 (2 ratings)
Users, last 30 days
-1
Rating, last 30 days
Steady over 30 days
Version
1.0.0
Updated in the store
2026-08-18
Published
2026-08-18
Manifest
V3
Browser access
1 permission, 2 site patterns

How it has moved

Users
-1 since 30.09
26-32 · 15 readings
2026-09-30: gained the good publisher record badge
  1. 2026-10-0529
  2. 2026-10-0828
  3. 2026-10-1029
  4. 2026-10-1127
  5. 2026-10-1626
  6. 2026-10-1827
  7. 2026-10-1928
  8. 2026-10-2027
  9. 2026-10-2128
  10. 2026-10-2232
  11. 2026-10-2331
  12. 2026-10-2528
  13. 2026-10-2831
  14. 2026-10-2928
  15. 2026-10-3027
Rating
unchanged since 30.09
reviewsrating 5.00 · 15 readings
2026-09-30: gained the good publisher record badge
  1. 2026-10-05reviews2rating5.00
  2. 2026-10-08reviews2rating5.00
  3. 2026-10-10reviews2rating5.00
  4. 2026-10-11reviews2rating5.00
  5. 2026-10-16reviews2rating5.00
  6. 2026-10-18reviews2rating5.00
  7. 2026-10-19reviews2rating5.00
  8. 2026-10-20reviews2rating5.00
  9. 2026-10-21reviews2rating5.00
  10. 2026-10-22reviews2rating5.00
  11. 2026-10-23reviews2rating5.00
  12. 2026-10-25reviews2rating5.00
  13. 2026-10-28reviews2rating5.00
  14. 2026-10-29reviews2rating5.00
  15. 2026-10-30reviews2rating5.00
Users
+24 since 01.09
3-32 · 27 readings
2026-09-30: gained the good publisher record badge
  1. 2026-09-013
  2. 2026-09-024
  3. 2026-09-048
  4. 2026-09-0512
  5. 2026-09-0714
  6. 2026-09-1016
  7. 2026-09-1319
  8. 2026-09-1721
  9. 2026-09-2025
  10. 2026-09-2126
  11. 2026-09-2527
  12. 2026-09-2828
  13. 2026-10-0529
  14. 2026-10-0828
  15. 2026-10-1029
  16. 2026-10-1127
  17. 2026-10-1626
  18. 2026-10-1827
  19. 2026-10-1928
  20. 2026-10-2027
  21. 2026-10-2128
  22. 2026-10-2232
  23. 2026-10-2331
  24. 2026-10-2528
  25. 2026-10-2831
  26. 2026-10-2928
  27. 2026-10-3027
Rating
unchanged since 01.09
reviewsrating 5.00 · 27 readings
2026-09-30: gained the good publisher record badge
  1. 2026-09-01reviews1rating5.00
  2. 2026-09-02reviews1rating5.00
  3. 2026-09-04reviews1rating5.00
  4. 2026-09-05reviews1rating5.00
  5. 2026-09-07reviews1rating5.00
  6. 2026-09-10reviews1rating5.00
  7. 2026-09-13reviews1rating5.00
  8. 2026-09-17reviews1rating5.00
  9. 2026-09-20reviews1rating5.00
  10. 2026-09-21reviews1rating5.00
  11. 2026-09-25reviews2rating5.00
  12. 2026-09-28reviews2rating5.00
  13. 2026-10-05reviews2rating5.00
  14. 2026-10-08reviews2rating5.00
  15. 2026-10-10reviews2rating5.00
  16. 2026-10-11reviews2rating5.00
  17. 2026-10-16reviews2rating5.00
  18. 2026-10-18reviews2rating5.00
  19. 2026-10-19reviews2rating5.00
  20. 2026-10-20reviews2rating5.00
  21. 2026-10-21reviews2rating5.00
  22. 2026-10-22reviews2rating5.00
  23. 2026-10-23reviews2rating5.00
  24. 2026-10-25reviews2rating5.00
  25. 2026-10-28reviews2rating5.00
  26. 2026-10-29reviews2rating5.00
  27. 2026-10-30reviews2rating5.00

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Specific sites only: 2 match patterns.

  • https://web.whatsapp.com/*
  • https://extensions.devainer.com/*
  • Store data in your browser storage

The full permission history for this extension

What changed recently

  1. Gained the Established publisher badge

The publisher

Devainer Extensions publishes 14 listings we track, 990 users between them. Listed website: devainer.com.

  1. Exportify for Instagram - Export Followers, Following, Likes & Comments Devainer Extensions · Lifestyle · Social · published 2026-06-26 261 users ★ 5.0
  2. InstaGuard AI for Instagram - Smart Unfollow Manager Devainer Extensions · Lifestyle · Social · published 2026-04-04 228 users ★ 4.7
  3. TSave - Video Downloader for TikTok Devainer Extensions · Productivity · Workflow · published 2026-08-23 211 users ★ 5.0
Show 5 more from this publisher
  1. TGrow AI - Smart Auto Follow Manager for TikTok Devainer Extensions · Lifestyle · Social · published 2026-08-01 75 users ★ 5.0
  2. TokGuard AI - Smart Unfollow Manager for TikTok Devainer Extensions · Lifestyle · Social · published 2026-08-02 36 users ★ 5.0
  3. ChatMaster – ChatGPT Bulk Delete, Archive, Rename & Timestamps Devainer Extensions · Productivity · Workflow · published 2026-08-18 29 users ★ 5.0
  4. Fetch AI Smart Email & Phone Extractor Devainer Extensions · Productivity · Workflow · published 2026-06-16 22 users ★ 5.0
  5. UnfollowX AI - Twitter (X) Smart Unfollow Manager Devainer Extensions · Lifestyle · Social · published 2026-06-17 22 users ★ 5.0

Like this one

Listings the catalog judges closest in what they say they do.

  1. WA Number Checker: Filter Valid Numbers Describes nearly the same job, smaller audience 21 users ★ 5.0
  2. WACheck Pro - Number Validator for WhatsApp™ Describes nearly the same job, smaller audience 4 users
  3. WhatsApp Number Verifier Describes nearly the same job, smaller audience 28 users
  4. Number Checker for WA - Check & Verify WhatsApp Numbers Describes nearly the same job, smaller audience 6 users ★ 5.0
  5. Bulk WA Number Checker & Validator & Search & lookup | WASBB.COM Describes nearly the same job, smaller audience 6k users ★ 4.8

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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The badge shows the audience and rating from our last pass over the store and links back to this page.

Users and rating on Ext Ops Panel

Markdown

[![Users and rating on Ext Ops Panel](https://extops.dev/extensions/fndieihkohnbpclilindhpmbgmclackg/badge.svg)](https://extops.dev/extensions/fndieihkohnbpclilindhpmbgmclackg)

HTML

<a href="https://extops.dev/extensions/fndieihkohnbpclilindhpmbgmclackg"><img src="https://extops.dev/extensions/fndieihkohnbpclilindhpmbgmclackg/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>

Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-10-30. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built