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2001:3::/32

2001:3::/32 is the AMT block.

Last updated 26 Oct 2026 from the IANA IPv6 Special-Purpose Address Registry

Short answer

IANA lists 2001:3::/32 as “AMT” (RFC 7450). It is not an ordinary public address.

Block2001:3::/32
First – last2001:3:: – 2001:3:ffff:ffff:ffff:ffff:ffff:ffff
Sizea /32 (2^96 addresses)
Name in the registryAMT
Defined inRFC 7450
Allocated2014-12
Valid as source / destinationTrue / True
ForwardableTrue
Globally reachableTrue

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Sources

  1. IANA IPv6 Special-Purpose Address Registry (CC0) · checked 26 Oct 2026
  2. RFC 7450