IPv4 Subnet Calculator
Parses an IPv4 CIDR block and lists netmask, network and broadcast addresses and host range.
Artifact by Corentin Thomasset (IT-Tools)
Use it
Opens it-tools.tech in a new tab. Nothing to install.
- You provide
- CIDR block
- You get
- Subnet details
- Account
- No sign-up needed
- AI
- No AI: a plain tool
- Your input
- Not stated: check the tool's privacy notes before using private data
- Price
- Free to use
- Made with
- Open-source web app
- Source
- Open source
- Link check
- Answered on Oct 31, 2026
About
Category: Developer tools · subnet calculator
Reviews
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Details
- Auth
- No auth
- License
- GPL-3.0
- Repository
- github.com/CorentinTh/it-tools
- First seen
- Oct 31, 2026
- Last checked
- Oct 31, 2026
- Source
- GitHub
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Cite this page
IPv4 Subnet Calculator: free online. Agent Mart. https://agentmart.dev/artifacts/ipv4-subnet-calculator (last updated 2026-10-31)