IPv4 Subnet Calculator

Advanced network subnetting tool for IT professionals and network engineers

Subnet Calculator
/24
About CIDR Notation

What is CIDR?

CIDR (Classless Inter-Domain Routing) notation is a compact representation of an IP address and its associated routing prefix.

Common CIDR Values:

  • /24 - 255.255.255.0 (Common for small networks)
  • /16 - 255.255.0.0 (Medium networks)
  • /8 - 255.0.0.0 (Large networks)
  • /32 - Single host

Tip: The CIDR number represents the number of bits in the subnet mask set to 1.