IPv6 notation tool

Expand IPv6 address 2040:0:140f::43:8700:131b

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 2040:0:140f::43:8700:131b

Expanded IPv6 address

2040:0000:140f:0000:0000:0043:8700:131b

Compressed IPv6

2040:0:140f::43:8700:131b

Expanded IPv6

2040:0000:140f:0000:0000:0043:8700:131b

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.

0010000001000000 0000000000000000 0001010000001111 0000000000000000 0000000000000000 0000000001000011 1000011100000000 0001001100011011

Compress this IPv6 address

Recent notation conversions

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