CIDR (Classless Interdomain Routing)

• Provides additional ways of arranging network and host info in an IP address
• Takes network ID and host's IP address and follows it with a forward slash followed by the number of bits used for a network ID
  • E.g. 192.168.89.127/24
    • 24 represents the number of 1s in the subnet mask
      • Number of bits in the network ID
    • Known as a CIDR block

Networking Computer Science