Home Lab & Self-Hosting Subnets

Plan IP ranges for your home network, VLANs, Docker, and self-hosted services.

Nid oes angen mewngofnodi

IPv4 address

Prefix

/0/8/16/24/32

254

Usable hosts

256

Total addresses

Network address192.168.1.0/24

Usable host range192.168.1.1 – 192.168.1.254

Broadcast address192.168.1.255

Subnet mask255.255.255.0

Wildcard mask0.0.0.255

Mask (binary)11111111.11111111.11111111.00000000

IP classC

Address typePrivate (RFC 1918)

IPv4 subnetting reference. /31 and /32 are handled per RFC 3021 (point-to-point and single-host). All math runs locally in your browser.

Home Lab tips

🏠

Splitting your home network into VLANs (IoT, guest, trusted)? Use /26 or /27 subnets to keep each segment right-sized.

💡

Docker default bridge networks and Kubernetes pods use private ranges — check overlaps with the 10.x and 172.16-31.x presets.

🎯

A /30 is perfect for point-to-point links between routers (2 usable hosts).

Sut Mae'n Gweithio

Ewch i mewn

Enter your data into the tool above. Everything stays local to your browser.

Proses

The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

Lawrlwythwch

Get your result instantly. Nothing is stored after you leave the page — complete privacy.

Pam defnyddio ein un ni?

✓Hollol rhad ac am ddim - dim costau cudd, byth

✓Nid oes angen cyfrif, e-bost na mewngofnodi

✓Nid yw ffeiliau byth yn gadael eich dyfais

✓Dim cyfyngiadau maint ffeil o gwbl

✓Dim dyfrnodau ar unrhyw allbwn

Also check out…

🖧

Subnet Planning for Network Admins

Plan IP allocation, calculate usable hosts, and si

🎓

Subnetting Practice for IT Students

Check your subnetting homework and CCNA practice p

☁️

Plan Cloud VPC CIDR Blocks

Size AWS/GCP/Azure VPC and subnet CIDR ranges befo

🛡️

CIDR Ranges for Firewall Rules

Convert IP ranges to CIDR notation for firewall al

Cwestiynau Cyffredin

Back to Subnet / CIDR Calculator