subnet.im

AS16509Amazon.com, Inc.

United StatesRegistryARINTypeContent

As of 26th September 2026, AS16509 (Amazon.com, Inc.), a content network registered in the United States with ARIN, originates 18,752 IPv4 prefixes covering 218M addresses and 5,984 IPv6 prefixes. By IPv4 address space that makes it the 2nd-largest of the 79,480 networks we see originating IPv4, and the 2nd-largest of 18,421 in the United States. It is seen behind 110 upstream networks, most often AS2914 (NTT America, Inc.) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 123 downstream networks. Over 99% of its announcements have a valid RPKI ROA; 2 are RPKI-invalid. Over 99% of its routes reach at least 90% of full-feed peers, and 22 prefixes are also originated by another network.

At a glance

IPv4 prefixes

18,752

IPv6 prefixes

5,984

IPv4 addresses

218M

IPv6 /64s

4.2T

Upstream graph

The networks AS16509 is seen behind, one and two hops out, drawn from real AS paths.

AS16509Toward the internet core
Upstream graph for AS16509: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS16509Amazon.com, Inc.This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3257GTT Communication…AS6453TATA Communicatio…AS151326DCConnect Communi…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS3130RGnet OUAS49544i3D.net B.VAS8220COLTAS35280F5 Networks SARL

Networks observed one and two hops upstream of AS16509 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

842

adjacent networks

Upstreams
11013%
Peers
60972%
Downstreams
12315%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 110.

Upstreams of AS16509
NetworkCountryRelationshipPathsVantage pts
AS2914NTT America, Inc.USPeer354,020123
AS1299Arelion (fka. Telia Carrier)SEPeer343,462143
AS174Cogent Communications, LLCUSPeer240,302139
AS6453TATA Communications (America) IncUSPeer235,393112
AS3257GTT Communications Inc.USPeer77,17137
AS6939Hurricane Electric LLCUSPeer56,74526
AS2497Internet Initiative Japan Inc.JPPeer48,8096
AS6762Telecom Italia Sparkle (Seabone)ITPeer43,87192
AS9002RETN LimitedGBPeer43,81619
AS3356Lumen (Level 3)USPeer43,67871

Prefixes

All 24,736

The largest blocks AS16509 originates, widest first.

Largest prefixes originated by AS16509
PrefixAddressesVisibility
3.0.0.0/104.2M80/81
3.64.0.0/104.2M80/81
3.128.0.0/104.2M80/81
3.192.0.0/104.2M80/81
34.192.0.0/104.2M80/81
44.192.0.0/104.2M80/81
184.192.0.0/104.2M79/81
44.224.0.0/112.1M79/81
52.0.0.0/112.1M80/81
52.32.0.0/112.1M80/81

Routing health

How AS16509'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

  • Valid99.6%24,642
  • Invalid<0.1%2
  • No ROA0.4%92

Propagation

  • Globally propagated90% of full-feed peers or more99.3%24,561
  • Partially propagated40% to 90%0.2%56
  • Seen by few peersUnder 40%0.5%119

Prefix sizes

IPv4 — 18,752 prefixes

IPv6 — 5,984 prefixes

  • /241.1T × /64<0.1%3
  • /25550B × /64<0.1%1
  • /2868.7B × /64<0.1%1
  • /2934.4B × /64<0.1%4
  • /324.3B × /640.2%14
  • /341.1B × /640.1%7
  • /35537M × /640.2%12
  • /36268M × /641.9%114
  • /37134M × /640.9%52
  • /3867.1M × /642.8%170
  • /3933.6M × /64<0.1%4
  • /4016.8M × /644.6%273
  • /418.4M × /64<0.1%2
  • /424.2M × /640.4%25
  • /432.1M × /640.2%14
  • /441M × /6410.0%598
  • /45524k × /640.4%21
  • /46262k × /6411.5%690
  • /47131k × /642.6%158
  • /4865.5k × /6463.9%3,821

Recent changes

Announcements that started or stopped since 27th Aug 2026.

4,438 announced and 1,302 withdrawn in all; the most recent are shown.

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