IPv4

IPv4

IPv4 refers to the 4th version of the internet protocol (IP). IP (version 4) addresses are made up of 32-bit integers that can be expressed in hexadecimal notation. IPv4 still routes most of today’s internet traffic. However, IPv4’s global IP address supply is running out of space, as 32-bit address space limits the number of unique hosts to 232, which is nearly 4.3 billion IPv4 addresses for the world to use.

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