What are the different classes of IP addresses?

Question

Accepted Answer

IP addresses are divided into classes based on the range of numbers they use to identify devices on a network.

There are five classes of IP addresses: A, B, C, D, and E.
Class A addresses are used for large networks and start with a number between 1 and 126.
Class B addresses are used for medium-sized networks and start with a number between 128 and 191.
Class C addresses are used for small networks and start with a number between 192 and 223.
Class D addresses are used for multicasting and start with a number between 224 and 239.
Class E addresses are reserved for experimental use and start with a number between 240 and 255.
The first three numbers in an IP address indicate the class of the address.
The fourth number in an IP address is used to identify a specific device on the network.
Private IP addresses are reserved for use on private networks and are not publicly routable.
IPv6 is a newer version of IP addressing that uses a different format and allows for more unique addresses.

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