IPv6 notation tool

Expand IPv6 address 265:a000:170a:4537:9d31:1587:c72a:f502

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 265:a000:170a:4537:9d31:1587:c72a:f502

Expanded IPv6 address

0265:a000:170a:4537:9d31:1587:c72a:f502

Compressed IPv6

265:a000:170a:4537:9d31:1587:c72a:f502

Expanded IPv6

0265:a000:170a:4537:9d31:1587:c72a:f502

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.

0000001001100101 1010000000000000 0001011100001010 0100010100110111 1001110100110001 0001010110000111 1100011100101010 1111010100000010
Compress this IPv6 address

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