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IP Address Subnet Ranges

CIDR (Classless Inter-Domain Routing) Subnet Mask Notation.

IP Addresses are 32 bits long.

The subnet range syntax nnn.nnn.nnn.nnn/xx means that the first xx bits are fixed. For example:

• 192.168.0.0/24 - means first 24 bits (the values 192.168.0) are fixed.

• 10.200.0.1/8 - means first 8 bits (the value 10) are fixed.

• 10.138.0.0/20 - means first 20 bits are fixed giving: min IP: 10.138.0.0 - max IP: 10.138.31.255.

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