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Flex Subnetting - Subnet Calculator

Chrome extension by Eddy Kwok · Productivity · Developer

  • Featured

A Chrome extension in Productivity · Developer with 246 users, barely installed. Audience over the last 30 days: +6.

Specific sites only: 1 match pattern.

What the developer says, and 6 screenshots

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

Users
246
Rating
5.0 (1 ratings)
Users, last 30 days
+6
Rating, last 30 days
Steady over 30 days
Version
1.3.3
Updated in the store
2021-09-26
Published
2020-07-07
Manifest
V3
Browser access
2 permissions, 1 site pattern

How it has moved

Users
+6 since 02.10
239-262 · 18 readings
  1. 2026-10-04257
  2. 2026-10-09250
  3. 2026-10-10246
  4. 2026-10-13240
  5. 2026-10-16250
  6. 2026-10-17247
  7. 2026-10-19250
  8. 2026-10-20258
  9. 2026-10-21259
  10. 2026-10-22262
  11. 2026-10-23260
  12. 2026-10-24254
  13. 2026-10-25245
  14. 2026-10-26246
  15. 2026-10-28249
  16. 2026-10-29239
  17. 2026-10-30240
  18. 2026-11-01246
Rating
unchanged since 02.10
reviewsrating 5.00 · 18 readings
  1. 2026-10-04reviews1rating5.00
  2. 2026-10-09reviews1rating5.00
  3. 2026-10-10reviews1rating5.00
  4. 2026-10-13reviews1rating5.00
  5. 2026-10-16reviews1rating5.00
  6. 2026-10-17reviews1rating5.00
  7. 2026-10-19reviews1rating5.00
  8. 2026-10-20reviews1rating5.00
  9. 2026-10-21reviews1rating5.00
  10. 2026-10-22reviews1rating5.00
  11. 2026-10-23reviews1rating5.00
  12. 2026-10-24reviews1rating5.00
  13. 2026-10-25reviews1rating5.00
  14. 2026-10-26reviews1rating5.00
  15. 2026-10-28reviews1rating5.00
  16. 2026-10-29reviews1rating5.00
  17. 2026-10-30reviews1rating5.00
  18. 2026-11-01reviews1rating5.00
Users
+15 since 31.08
228-262 · 34 readings
  1. 2026-08-31231
  2. 2026-09-02238
  3. 2026-09-04232
  4. 2026-09-05228
  5. 2026-09-06240
  6. 2026-09-07246
  7. 2026-09-08250
  8. 2026-09-09248
  9. 2026-09-13254
  10. 2026-09-15250
  11. 2026-09-16254
  12. 2026-09-20253
  13. 2026-09-21250
  14. 2026-09-25251
  15. 2026-09-26242
  16. 2026-09-28240
  17. 2026-10-04257
  18. 2026-10-09250
  19. 2026-10-10246
  20. 2026-10-13240
  21. 2026-10-16250
  22. 2026-10-17247
  23. 2026-10-19250
  24. 2026-10-20258
  25. 2026-10-21259
  26. 2026-10-22262
  27. 2026-10-23260
  28. 2026-10-24254
  29. 2026-10-25245
  30. 2026-10-26246
  31. 2026-10-28249
  32. 2026-10-29239
  33. 2026-10-30240
  34. 2026-11-01246
Rating
unchanged since 31.08
reviewsrating 5.00 · 34 readings
  1. 2026-08-31reviews1rating5.00
  2. 2026-09-02reviews1rating5.00
  3. 2026-09-04reviews1rating5.00
  4. 2026-09-05reviews1rating5.00
  5. 2026-09-06reviews1rating5.00
  6. 2026-09-07reviews1rating5.00
  7. 2026-09-08reviews1rating5.00
  8. 2026-09-09reviews1rating5.00
  9. 2026-09-13reviews1rating5.00
  10. 2026-09-15reviews1rating5.00
  11. 2026-09-16reviews1rating5.00
  12. 2026-09-20reviews1rating5.00
  13. 2026-09-21reviews1rating5.00
  14. 2026-09-25reviews1rating5.00
  15. 2026-09-26reviews1rating5.00
  16. 2026-09-28reviews1rating5.00
  17. 2026-10-04reviews1rating5.00
  18. 2026-10-09reviews1rating5.00
  19. 2026-10-10reviews1rating5.00
  20. 2026-10-13reviews1rating5.00
  21. 2026-10-16reviews1rating5.00
  22. 2026-10-17reviews1rating5.00
  23. 2026-10-19reviews1rating5.00
  24. 2026-10-20reviews1rating5.00
  25. 2026-10-21reviews1rating5.00
  26. 2026-10-22reviews1rating5.00
  27. 2026-10-23reviews1rating5.00
  28. 2026-10-24reviews1rating5.00
  29. 2026-10-25reviews1rating5.00
  30. 2026-10-26reviews1rating5.00
  31. 2026-10-28reviews1rating5.00
  32. 2026-10-29reviews1rating5.00
  33. 2026-10-30reviews1rating5.00
  34. 2026-11-01reviews1rating5.00

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: 1 match pattern.

  • https://www.googleapis.com/
  • Sign you in with a Google account identity
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

Eddy Kwok.

Like this one

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

  1. NetCarve — subnet calculator & address planner Describes nearly the same job, smaller audience 3 users
  2. IP Calculator Describes nearly the same job, smaller audience 10 users
  3. CIDR-X CIDR Calculator Describes nearly the same job, smaller audience 87 users
  4. NetEng Sidekick: Subnet Calculator Describes nearly the same job, smaller audience 28 users ★ 5.0
  5. Calculadora IP Describes nearly the same job, smaller audience 3 users

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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Users and rating on Ext Ops Panel

Markdown

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

HTML

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Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-11-01. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built