IPv6 Address Generator

An IPv6 address is a 128-bit network address used by Internet Protocol version 6. It is usually written as hexadecimal groups separated by colons, such as 2001:db8::1. IPv6-style values are common in network configuration, logs, APIs, allowlists, test fixtures, and documentation.

A full IPv6 address contains eight groups of four hexadecimal digits. Each group represents 16 bits, which gives IPv6 a much larger address space than IPv4. Different prefixes identify different address types, such as global unicast, unique local, link-local, and documentation ranges.

IPv6 permits one continuous sequence of zero groups to be shortened with double-colon notation. For example, a full address with several zero groups can be displayed in compressed notation without changing its value. This generator applies valid zero-compression rules and never creates more than one compressed run.

Global unicast mode generates values within 2000::/3. Unique local mode generates fd00::/8 sample values inside fc00::/7 for private local-network style data. Link-local mode generates fe80::/10 values for same-link examples. Documentation mode generates 2001:db8::/32 addresses, which are reserved for examples and documentation.

IPv4 addresses are 32-bit values written as four decimal octets, while IPv6 addresses are 128-bit values written in hexadecimal. IPv6 was designed to provide vastly more address space and supports address types that are useful for global routing, private local use, and single-link communication. For IPv4-style sample data, use the IPv4 Address Generator.

Full IPv6 notation always contains eight four-character groups, such as 2001:0db8:0000:0000:0000:0000:0000:0001. Compressed notation removes leading zeroes and may compress one run of zero groups, such as 2001:db8::1. Generated addresses are sample values only and should not be treated as assigned, reachable, or safe to use on the public internet.