subnet.im

AS21664Amazon.com, Inc.

United StatesRegistryARIN

As of 27th September 2026, AS21664 (Amazon.com, Inc.), a network registered in the United States with ARIN, originates 3 IPv4 prefixes covering 768 addresses and 5 IPv6 prefixes. By IPv4 address space that makes it the 44,916th-largest of the 79,523 networks we see originating IPv4, and the 9,395th-largest of 18,427 in the United States. It is seen behind 2 upstream networks, most often AS16509 (Amazon.com, Inc.) and AS8987 (Amazon Gov Cloud). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 38% of its routes reach at least 90% of full-feed peers, and 3 prefixes are also originated by another network.

At a glance

IPv4 prefixes

3

IPv6 prefixes

5

IPv4 addresses

768

IPv6 /64s

328k

Upstream graph

The networks AS21664 is seen behind, one and two hops out, drawn from real AS paths.

AS21664Toward the internet core
Upstream graph for AS21664: 4 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS21664Amazon.com, Inc.This networkAS8987Amazon Gov CloudAS16509Amazon.com, Inc.AS1299Arelion (fka. Tel…AS2914NTT America, Inc.

Networks observed one and two hops upstream of AS21664 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS21664
NetworkCountryRelationshipPathsVantage pts
AS16509Amazon.com, Inc.USPeer278115
AS8987Amazon Gov CloudUSPeer33

Prefixes

The largest blocks AS21664 originates, widest first.

Largest prefixes originated by AS21664
PrefixAddressesVisibility
130.137.68.0/2425681/81
168.185.4.0/2425681/81
192.43.184.0/2425681/81
2605:9cc0:c00::/4865.5k × /641/64
2605:9cc0:c02::/4865.5k × /641/64
2605:9cc0:c06::/4865.5k × /641/64
2605:9cc0:c08::/4865.5k × /6432/64
2605:9cc0:c0d::/4865.5k × /643/64

Routing health

How AS21664's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid100.0%8
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more37.5%3
  • Partially propagated40% to 90%12.5%1
  • Seen by few peersUnder 40%50.0%4

Prefix sizes

IPv4 — 3 prefixes

IPv6 — 5 prefixes

  • /4865.5k × /64100.0%5

Recent changes

Announcements that started or stopped since 28th Aug 2026.

36 announced and 31 withdrawn in all; the most recent are shown.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.