IPv6 notation tool

Expand IPv6 address 2a01:5ec0:e804:768a:2c56:a97c:2bdb:c4af

Write any valid IPv6 address in its complete eight-group form for subnetting, binary analysis, logs, and documentation.

Example: 2001:db8::1

The conversion runs locally and does not use an external lookup service.

Expansion result

Full IPv6 notation for 2a01:5ec0:e804:768a:2c56:a97c:2bdb:c4af

Expanded IPv6 address

2a01:5ec0:e804:768a:2c56:a97c:2bdb:c4af

Compressed IPv6

2a01:5ec0:e804:768a:2c56:a97c:2bdb:c4af

Expanded IPv6

2a01:5ec0:e804:768a:2c56:a97c:2bdb:c4af

IPv6 groups

8 groups of 4 hexadecimal digits

Address size

128 bits

Expansion rules

How IPv6 expansion works

  1. 1An IPv6 address always has eight 16-bit hexadecimal groups.
  2. 2Each visible group is left-padded with zeroes until it contains four digits.
  3. 3If :: appears, it is replaced with the number of 0000 groups needed to reach eight groups.

Binary representation

128 bits, grouped for inspection

Each block below represents one 16-bit IPv6 group. This form is useful when comparing prefix bits or troubleshooting subnet boundaries.

0010101000000001 0101111011000000 1110100000000100 0111011010001010 0010110001010110 1010100101111100 0010101111011011 1100010010101111
Compress this IPv6 address

Recent notation conversions

Recent IPv6 Expansions

Open recent IPv6 addresses to inspect their complete eight-group and binary forms.

Learn how IPv6 expansion and binary groups work