IP Version 6 addresses are in a colon-hexadecimal format and comprise 8 blocks of 4 digits, making it a 128-bit address. The first 64 bits from the left-hand side are the routing or network portion, and the last 64 bits will be used for the host. There are different address ranges and the main three are:
- Public: The public addresses, just like the IP Version 4 addresses, can be used externally. They start on the right-hand side with the 2001, 2002, or 2003 value. An example is 2001: ABCD:0000:0000:0000:0000: 1230:0ABC.
- Link local: Link local are like the APIPA IP Version 4 address; they are restricted to one subnet and start with fe80.
- Unique local: Unique local addresses are sometimes known as site-local addresses; ...