IPv4 vs IPv6

Compare IPv4 and IPv6 address formats and why both are used on today’s internet.

IPv4 uses 32-bit addresses commonly written as four decimal numbers separated by dots. IPv6 uses 128-bit addresses written in hexadecimal groups, providing a vastly larger address space.

A connection may support IPv4, IPv6, or both. Which address a website sees can depend on your provider, device, browser, destination, and network configuration.

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