IPv6 notation tool

Expand IPv6 address 2601:582:8600:22:9ca2:9fc5:93b:5685

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 2601:582:8600:22:9ca2:9fc5:93b:5685

Expanded IPv6 address

2601:0582:8600:0022:9ca2:9fc5:093b:5685

Compressed IPv6

2601:582:8600:22:9ca2:9fc5:93b:5685

Expanded IPv6

2601:0582:8600:0022:9ca2:9fc5:093b:5685

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.

0010011000000001 0000010110000010 1000011000000000 0000000000100010 1001110010100010 1001111111000101 0000100100111011 0101011010000101
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