IPv4-mapped IPv6

IPv4-mapped IPv6 address for 255.255.255.255

Convert an IPv4 address into IPv4-mapped IPv6 notation for dual-stack applications, logs, socket APIs, and network troubleshooting.

Read: IPv4-mapped IPv6 addresses explained

The conversion runs locally and does not use an external lookup service.

Conversion result

IPv4-mapped IPv6 address for 255.255.255.255

IPv4 input

255.255.255.255

IPv6 mapped output

::ffff:ffff:ffff

Expanded IPv6 address

0000:0000:0000:0000:0000:ffff:ffff:ffff

IPv4 dotted-quad notation

::ffff:255.255.255.255

255.255.255.255 is a special-use IPv4 address

255.255.255.255 is the limited broadcast address. It reaches hosts on the current IPv4 network segment only and routers do not forward it to other networks.

Its IPv4-mapped IPv6 representation is ::ffff:ffff:ffff. The mapping preserves the IPv4 bits for IPv6-aware APIs; it does not change the address's special routing rules.

See the IANA IPv4 special-purpose registry for the current assignments.

Recent conversions

Recent IPv4 to IPv6 Conversions

Open recent IPv4 inputs to view their IPv4-mapped IPv6, expanded, and dotted-quad forms.