SubnetBuddy
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Everyone
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About this app
SubnetBuddy is the ultimate networking companion for IT professionals, students, and anyone working with IP addresses and subnets. Designed for speed and simplicity, it works completely offline — no internet connection required.
KEY FEATURES:
Subnet Calculator — Enter any IP address and CIDR notation to instantly calculate network address, broadcast address, usable host range, wildcard mask, and total hosts.
VLSM Calculator — Efficiently divide a network into variable-length subnets based on your specific host requirements. Perfect for optimizing IP address allocation.
Binary/Decimal Converter — Quickly convert between binary and decimal formats for IP addresses and subnet masks.
CIDR Reference Table — A handy quick-reference chart for all CIDR notations from /1 to /32, showing subnet masks, wildcard masks, and available hosts at a glance.
IPv4 Class Identifier — Instantly determine the class (A, B, C, D, E) of any IP address along with its default subnet mask and address range.
100% Offline — All calculations happen on-device. No data is sent anywhere, ever. Use it in the field, in the server room, or during an exam.
Clean, Modern UI — A sleek dark interface designed for readability and fast navigation. Copy results to clipboard with a single tap.
PERFECT FOR:
Network engineers and administrators
CCNA, CompTIA Network+, and IT certification students
Help desk and support technicians
Anyone learning about IP networking
SubnetBuddy was built by a network professional who needed a fast, reliable, and ad-free subnet tool that just works. No sign-ups, no ads, no tracking — just pure networking utility in your pocket.
Download SubnetBuddy today and never struggle with subnet math again.
KEY FEATURES:
Subnet Calculator — Enter any IP address and CIDR notation to instantly calculate network address, broadcast address, usable host range, wildcard mask, and total hosts.
VLSM Calculator — Efficiently divide a network into variable-length subnets based on your specific host requirements. Perfect for optimizing IP address allocation.
Binary/Decimal Converter — Quickly convert between binary and decimal formats for IP addresses and subnet masks.
CIDR Reference Table — A handy quick-reference chart for all CIDR notations from /1 to /32, showing subnet masks, wildcard masks, and available hosts at a glance.
IPv4 Class Identifier — Instantly determine the class (A, B, C, D, E) of any IP address along with its default subnet mask and address range.
100% Offline — All calculations happen on-device. No data is sent anywhere, ever. Use it in the field, in the server room, or during an exam.
Clean, Modern UI — A sleek dark interface designed for readability and fast navigation. Copy results to clipboard with a single tap.
PERFECT FOR:
Network engineers and administrators
CCNA, CompTIA Network+, and IT certification students
Help desk and support technicians
Anyone learning about IP networking
SubnetBuddy was built by a network professional who needed a fast, reliable, and ad-free subnet tool that just works. No sign-ups, no ads, no tracking — just pure networking utility in your pocket.
Download SubnetBuddy today and never struggle with subnet math again.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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What’s new
SubnetBuddy v1.2.0 — "Signal Lock"
- CIDR subnet calculator with full network breakdown
- Binary/decimal IP converter with hex output
- Network visualizer with subnet allocation maps
- VLAN planner for multi-subnet organization
- One-tap copy, offline-only, zero data collection
- CIDR subnet calculator with full network breakdown
- Binary/decimal IP converter with hex output
- Network visualizer with subnet allocation maps
- VLAN planner for multi-subnet organization
- One-tap copy, offline-only, zero data collection
App support
phone
Phone number
+14084067900
About the developer
VibeCMD LLC
vibecmdtech@gmail.com
8362 Amsell Ct
Citrus Heights, CA 95610-3302
United States
+1 408-406-7900
