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AS21804Access Communications Co-operative Limited

CanadaRegistryARINTypeEyeball

As of 28th September 2026, AS21804 (Access Communications Co-operative…), an access network registered in Canada with ARIN, originates 25 IPv4 prefixes covering 96.8k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 2,452nd-largest of the 79,556 networks we see originating IPv4, and the 68th-largest of 1,575 in Canada. It is seen behind 17 upstream networks, most often AS3257 (GTT Communications Inc.) and AS6327 (Shaw Communications), and in front of 3 downstream networks. 11% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 89% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

25

IPv6 prefixes

3

IPv4 addresses

96.8k

IPv6 /64s

8.6B

Upstream graph

The networks AS21804 is seen behind, one and two hops out, drawn from real AS paths.

AS21804Toward the internet core
Upstream graph for AS21804: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS21804Access Communicat…This networkAS174Cogent Communicat…AS3257GTT Communication…AS6327Shaw Communicatio…AS6939Hurricane Electri…AS18106Viewqwest Pte LtdAS151326DCConnect Communi…AS1299Arelion (fka. Tel…AS6667Elisa OyjAS398465Rackdog LLCAS3356Lumen (Level 3)AS20130Depaul UniversityAS215859Hetzner Cloud - S…

Networks observed one and two hops upstream of AS21804 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

66

adjacent networks

Upstreams
1726%
Peers
4670%
Downstreams
35%

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

Upstreams of AS21804
NetworkCountryRelationshipPathsVantage pts
AS3257GTT Communications Inc.USPeer2,190101
AS6327Shaw CommunicationsCAPeer57731
AS6939Hurricane Electric LLCUSPeer20324
AS18106Viewqwest Pte LtdSGPeer822
AS174Cogent Communications, LLCUSPeer802
AS35280F5 Networks SARLFRPeer453
AS9002RETN LimitedGBPeer452
AS58511Swoop (Anycast Global Backbone)AUPeer442
AS49544i3D.net B.VNLPeer442
AS24482SG.GSSGPeer432

Prefixes

All 28

The largest blocks AS21804 originates, widest first.

Largest prefixes originated by AS21804
PrefixAddressesVisibility
24.89.64.0/1816.4k82/82
24.72.0.0/198.2k82/82
24.72.32.0/198.2k82/82
24.72.64.0/198.2k82/82
24.72.96.0/198.2k82/82
65.87.224.0/198.2k82/82
74.206.128.0/198.2k82/82
24.72.128.0/204.1k82/82
74.206.144.0/204.1k82/82
96.63.128.0/204.1k82/82

Routing health

How AS21804'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

  • Valid10.7%3
  • Invalid0.0%0
  • No ROA89.3%25

Propagation

  • Globally propagated90% of full-feed peers or more89.3%25
  • Partially propagated40% to 90%7.1%2
  • Seen by few peersUnder 40%3.6%1

Prefix sizes

IPv4 — 25 prefixes

IPv6 — 3 prefixes

  • /324.3B × /6433.3%1
  • /332.1B × /6466.7%2

Recent changes

Announcements that started or stopped since 29th Aug 2026.

No announcement by AS21804 started or stopped in this period.

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