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Recognised as IPv6 address

::1

  • IPv6
  • Loopback

::1 is an IPv6 address in the loopback range: the host itself, equivalent to 127.0.0.1. Written out in full it is 0000:0000:0000:0000:0000:0000:0000:0001.

Representations

Compressed (RFC 5952)::1
Fully expanded0000:0000:0000:0000:0000:0000:0000:0001
In a URL[::1]brackets separate the address from the port
Integer1
Hexadecimal0x1
Reverse DNS1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpaeach nibble becomes a label, least significant first

What kind of address

RangeLoopbackthe host itself, equivalent to 127.0.0.1
Routable on the internetNo
Address familyIPv6128 bits, against 32 for IPv4
Groups0, 0, 0, 0, 0, 0, 0, 1
Zero groups7runs of two or more are what "::" replaces

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Every value on this page was computed from “v6 z 1” by Nerdulator’s ip engine. Nothing here was retrieved from a database of answers or written by a model.