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Recognised as IPv6 prefix

2001:db8::/32

  • IPv6
  • Documentation
  • /32

2001:db8::/32 is an IPv6 prefix in the documentation range: reserved for examples and never routed (RFC 3849). It covers 2^96 addresses, from 2001:db8:: to 2001:db8:ffff:ffff:ffff:ffff:ffff:ffff.

Representations

Compressed (RFC 5952)2001:db8::
Fully expanded2001:0db8:0000:0000:0000:0000:0000:0000
In a URL[2001:db8::]brackets separate the address from the port
Integer42540766411282592856903984951653826560
Hexadecimal0x20010db8000000000000000000000000
Reverse DNS0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpaeach nibble becomes a label, least significant first

What kind of address

RangeDocumentationreserved for examples and never routed (RFC 3849)
Routable on the internetNo
Address familyIPv6128 bits, against 32 for IPv4
Groups2001, db8, 0, 0, 0, 0, 0, 0
Zero groups6runs of two or more are what "::" replaces

Prefix arithmetic

Prefix length/32
Network address2001:db8::
Last address2001:db8:ffff:ffff:ffff:ffff:ffff:ffff
Addresses in the block2^96more than the whole IPv4 internet, many times over
/64 subnets available2^32a /64 is the standard size for a single LAN
Host bits96

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Every value on this page was computed from “v6 2001 db8 z p32” by Nerdulator’s ip engine. Nothing here was retrieved from a database of answers or written by a model.