IPv4-mapped IPv6

IPv4-mapped IPv6 address for 198.51.100.1

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 198.51.100.1

IPv4 input

198.51.100.1

IPv6 mapped output

::ffff:c633:6401

Expanded IPv6 address

0000:0000:0000:0000:0000:ffff:c633:6401

IPv4 dotted-quad notation

::ffff:198.51.100.1

198.51.100.1 is an IPv4 documentation address

198.51.100.1 belongs to 198.51.100.0/24, one of the IPv4 TEST-NET ranges reserved for documentation, tutorials, and configuration examples.

Documentation addresses should not be used for real hosts or appear on the public internet. Using reserved examples avoids accidentally publishing someone else's live address in guides and sample configurations.

Its IPv4-mapped IPv6 representation is ::ffff:c633:6401. This preserves the example IPv4 value in the ::ffff:0:0/96 prefix for IPv6-aware tools.

See RFC 5737 for the three TEST-NET blocks.

Recent conversions

Recent IPv4 to IPv6 Conversions

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