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Digital Literacy How the Web Works The World Wide Web Domain Names and IP Addresses

Sheldon Li
Sheldon Li
9,309 Points
Posted by Sheldon Li
Sheldon Li
9,309 Points

Why the up limit figure of IPV4 is 255 rather than 999?

where does the figure "255" come from?

3 Answers

Laurence Foley
Laurence Foley
16,695 Points

each octet in an IPv4 address represents an 8 bit binary number. There are 256 unique combinations you can get using 8 bits, so you can represent 256 numbers. Because the 0 is included, that allows you to count from 0 to 255.

Sheldon Li
Sheldon Li
9,309 Points
Sheldon Li
Sheldon Li
9,309 Points

Thanks Laurence ! Good to know it..

Tanvir Rashid
Tanvir Rashid
495 Points

thnx Laurence