IPv6 notation tool

Expand IPv6 address fd01:5ca1:ab1e:8fae:f1dc:d1a2:8bab:81d

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

Example: 2001:db8::1

Expansion result

Full IPv6 notation for fd01:5ca1:ab1e:8fae:f1dc:d1a2:8bab:81d

Expanded IPv6 address

fd01:5ca1:ab1e:8fae:f1dc:d1a2:8bab:081d

Compressed IPv6

fd01:5ca1:ab1e:8fae:f1dc:d1a2:8bab:81d

Expanded IPv6

fd01:5ca1:ab1e:8fae:f1dc:d1a2:8bab:081d

IPv6 groups

8 groups of 4 hexadecimal digits

Address size

128 bits

Expansion rules

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

Binary representation

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

1111110100000001 0101110010100001 1010101100011110 1000111110101110 1111000111011100 1101000110100010 1000101110101011 0000100000011101

Compress this IPv6 address

Recent notation conversions

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