IPv6 address notation

• 128-bit addresses unwieldy in dotted decimal; requires 16 numbers

    105.220.136.100.255.255.255.255.0.0.18.128.140.10.255.255
  

• Groups of 16-bit numbers in hex separated by colons - colon hexadecimal (or colon hex)

       69DC:8864:FFFF:FFFF:0:1280:8C0A:FFFF
  

• Zero-compression - series of zeroes indicated by two colons

            FF0C:0:0:0:0:0:0:B1
  
                 FF0C::B1
  

• IPv4 Notation

         ::128.163.146.100