Network
ArrayKit's Network tools handle the IP address math that comes up every day in network engineering, DevOps and backend work. Need to plan an address space, size a subnet, or read a firewall rule? The CIDR / Subnet Calculator breaks a CIDR block down into its network address, broadcast address, usable host range and mask, so you can carve up IPv4 space with confidence. The IPv6 ↔ IPv4 Converter translates addresses between IPv4 and IPv6 — mapped, expanded and compressed forms — and pulls out embedded IPv4 from IPv6 notation. These tools are built for sysadmins, cloud engineers and students learning subnetting. Every calculation runs entirely in your browser, so the addresses and ranges you work with are processed locally and nothing is uploaded to a server.
Frequently asked questions
- What can I do with these Network tools?
- You can calculate subnet details from a CIDR block — network and broadcast addresses, usable host range and subnet mask — and convert addresses between IPv4 and IPv6 in mapped, expanded or compressed form, including extracting embedded IPv4.
- Are these Network tools safe to use with internal IP ranges?
- Yes. Every calculation runs entirely in your browser, so internal CIDR blocks and IP addresses are processed locally and your data never leaves your device. Nothing is uploaded to a server.
- Do the Network tools work offline?
- Yes. Because the subnet math and IP conversions run locally in the browser, they keep working once the page has loaded even if your connection drops.
- Does the CIDR calculator support IPv4 subnetting?
- Yes. Enter a CIDR block such as 10.0.0.0/24 and the calculator returns the network address, broadcast address, host range and mask for that IPv4 subnet.
- Can I convert between IPv4 and IPv6 addresses?
- Yes. The IPv6 ↔ IPv4 Converter translates addresses in both directions, shows mapped, expanded and compressed IPv6 forms, and extracts any IPv4 address embedded in an IPv6 notation.