NetSubnet Toolkit: VLSM/CIDR

Subnet, VLSM, CIDR & IP tools for network engineers. Fast & offline.

Dot7 · com.vlsm

Not rated yet 10K+ downloads v1.0.12 20.4 MB Android 6.0+ PEGI 3 · Everyone

Download APK 20.4 MB All versions

Signature matches the Google Play version Details

Watch the NetSubnet Toolkit: VLSM/CIDR trailer on YouTube

NetSubnet Toolkit: VLSM/CIDR screenshot 1

NetSubnet Toolkit: VLSM/CIDR screenshot 2

NetSubnet Toolkit: VLSM/CIDR screenshot 3

At a glance

Latest version: v1.0.12 (16)
Updated: Apr 4, 2026 (6 months ago)
APK size: 20.4 MB
Requires: Android 6.0+ (API 23)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category: Productivity (app)
Listed since: Apr 28, 2023 (at least)
Permissions: 9
Website: cristofermarin.me
Developer contact: [email protected]

About this APK

NetSubnet Toolkit: VLSM/CIDR is an app by Dot7 in the Productivity category, listed since at least April 2023. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 1.0.8, the minimum Android version rose from 5.0 to 6.0. It asks for 9 permissions, none of them sensitive. It asks for the same permissions as version 1.0.11. The app can read the advertising ID that ad and analytics services use.

What's new in v1.0.12

Improving internal navigation

Description

From the listing uploaded by “appupdater”.

Subnet, VLSM and CIDR tools for networking. Fast IPv4 and IPv6 calculator, accurate and fully offline. NetSubnet Toolkit is an all-in-one networking app for subnetting, IP addressing and network design. Built for network engineers, CCNA/CCNP students and IT professionals who need fast and reliable results anytime, even without internet access. Key Features Subnet Calculator (IPv4) * Calculate network, broadcast, first and last host * CIDR support (/8 to /32) * Wildcard mask and binary format VLSM Calculator * Automatic subnet allocation * Optimized host distribution * No overlaps CIDR / Subnet Mask Converter * Convert prefix, subnet mask and wildcard * Instant results IPv4 and IPv6 Tools * IPv6 network calculations * Address expansion and compression * Advanced prefix handling Subnet Planner * Split networks into multiple subnets * Ideal for network design and architecture IP Range Generator * Generate IP address lists * Perfect for CCTV, VoIP and enterprise networks VLAN Assistant * Quick VLAN calculations * Automatic gateway suggestions Configuration Generator * Ready-to-use network configuration snippets * Cisco-style commands * Export and share easily Smart History * Save recent calculations * Copy results instantly Why choose NetSubnet Toolkit * Professional subnet calculator and networking toolkit * Works 100% offline * Clean, fast and intuitive UI * Accurate results for real-world networking Perfect for * Network engineers * CCNA and CCNP students * IT technicians * Network administrators Design networks faster, avoid subnetting errors and take your networking tools anywhere.

Version history

3 versions are listed, going back to v1.0.8. Since v1.0.11 it requires Android 6.0+.

v1.0.12 LATEST Apr 4, 2026 20.4 MB TRUSTED v1.0.11 Mar 25, 2026 20.4 MB TRUSTED v1.0.8 Jul 16, 2025 7.6 MB TRUSTED

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Apr 4, 2026.
Certificate issued to “Dot7” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Apr 4, 2026
Validated against Google Play Apr 4, 2026
Signed byCN=Cristofer Mar?n, OU=Dot7, O=Dot7, L=Monterrey, ST=Nuevo Le?n, C=52
Signing certificate (SHA-1)C4:CD:D1:6A:82:6E:B1:35:ED:67:FB:71:F6:F8:C6:CC:3B:52:32:DB
File MD562ff80d4d469373323ac3f3d4778227c
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (9)

NetSubnet Toolkit: VLSM/CIDR requests 9 permissions, none of them sensitive.

Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
Advertising ID com.google.android.gms.permission.AD_ID
Full network access android.permission.INTERNET
Internal broadcast protection (app-defined) com.vlsm.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
Run foreground services android.permission.FOREGROUND_SERVICE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch

NetSubnet Toolkit: VLSM/CIDR APK: questions and answers

Is there a version of NetSubnet Toolkit: VLSM/CIDR for older Android phones?

The current version needs Android 6.0 or later. Version 1.0.8 is the newest listed build that installs on Android 5.0 and later. Get version 1.0.8 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the NetSubnet Toolkit: VLSM/CIDR APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 62ff80d4d469373323ac3f3d4778227c.