IPv4 / IPv6 converter

Convert an IP address into useful representations including binary, hexadecimal, expanded IPv6 and reverse-DNS notation.

Convert an address

IPv4 representations

An IPv4 address is a 32-bit number commonly shown as four decimal octets. Binary and hexadecimal views are useful for subnet calculations, protocol analysis and debugging.

IPv6 representations

IPv6 is a 128-bit hexadecimal address. Zero compression makes it easier to read, while the full eight-group representation is useful when calculating prefixes or reverse DNS names.

Reverse DNS notation

IPv4 PTR names use in-addr.arpa. IPv6 reverses each hexadecimal nibble under ip6.arpa.