IP Address Versions 4,5 and 6

IPv4 - First version of IP(Internet Protocol) currently used by nearly all the devices on the internet and so are running short as it comprises only 4 billion IP addresses.Its size is 32 bit.

IPv5 - An experimental version of IP address which never came into existence.

IPv6 - The next generation IP address for future use and replacement for ipv4.Its size is 128 bit and comprises 16 billion IP addresses.