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2001:db8::/32

2001

Last updated 2 Nov 2026 from the IANA IPv6 Special-Purpose Address Registry

Short answer

2001:db8::/32 is the IPv6 documentation prefix: examples only, never real.

Block2001:db8::/32
First – last2001:db8:: – 2001:db8:ffff:ffff:ffff:ffff:ffff:ffff
Sizea /32 (2^96 addresses)
Name in the registryDocumentation
Defined inRFC 3849
Allocated2004-07
Valid as source / destinationFalse / False
ForwardableFalse
Globally reachableFalse

What it means

RFC 3849 reserves 2001:db8::/32 for manuals and examples, like 192.0.2.0/24 in IPv4. peekip uses it for every IPv6 example.

No network should route it.

Want the address websites actually see for you? Open the Truth Check.

Sources

  1. IANA IPv6 Special-Purpose Address Registry (CC0) · checked 2 Nov 2026
  2. RFC 3849