Internet Protocol version 6 (IPV6)

IPv6 is a newer numbering system that

provides a much larger address pool

than IPv4. It was deployed in 1999 and

should meet the world’s IP addressing

needs well into the future.

The major difference between IPv4 and

IPv6 is the number of IP addresses.

There are 4,294,967,296 IPv4

addresses. In contrast, there are


607,431,768,211,456 IPv6 addresses.

The technical functioning of the Internet

remains the same with both versions

and it is likely that both versions will

continue to operate simultaneously on

networks well into the future. To date,

most networks that use IPv6 support

both IPv4 and IPv6 addresses in their


References for the glossary can be viewed by clicking here.