ip subnet calculator — free browser tool | fatcousin | fatcousin

tools→browse every utility in one place.manifesto→why fatcousin exists — local-first, no uploads.

ready

local

// fatcousin · local process monitor

00:00:00

// session started —

// tool · ip-subnet

// origin · —

// user agent · —

// verdict · files processed locally · verify by watching NET events below

▮

NET · no outbound requests · all processing local

this panel shows everything. if something looks wrong, it is wrong. that's the contract.

cidr · subnet math · split · runs locally

[input]

[results]

CIDR notation	192.168.1.0/24
IP address	192.168.1.0
network address	192.168.1.0
broadcast address	192.168.1.255
first usable host	192.168.1.1
last usable host	192.168.1.254
subnet mask	255.255.255.0
wildcard mask	0.0.0.255
total addresses	256
usable hosts	254
prefix length	/24
ip class	C
private range	yes (RFC 1918)
subnet mask (binary)	11111111.11111111.11111111.00000000

[split subnets]

split into /26 subnets

4 subnets

192.168.1.0/26

192.168.1.64/26

192.168.1.128/26

192.168.1.192/26

[status]

>ready