subnet.im

AS5466Eircom Limited

IrelandRegistryRIPE NCCTypeEyeball

As of 12th November 2026, AS5466 (Eircom Limited), an access network registered in Ireland with RIPE NCC, originates 25 IPv4 prefixes covering 1.1M addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 437th-largest of the 80,772 networks we see originating IPv4, and the 4th-largest of 197 in Ireland. It is seen behind 46 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS174 (Cogent Communications, LLC), and in front of 14 downstream networks. 89% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

25

IPv6 prefixes

3

IPv4 addresses

1.1M

IPv6 /64s

34.4B

Upstream graph

The networks AS5466 is seen behind, one and two hops out, drawn from real AS paths.

AS5466Toward the internet core
Upstream graph for AS5466: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS5466Eircom LimitedThis networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS9002RETN LimitedAS13030Init7 (Switzerlan…AS18106Viewqwest Pte LtdAS151326DCConnect Communi…AS16552Tiggee LLCAS3356Lumen (Level 3)AS6667Elisa OyjAS56662Marcin GondekAS6939Hurricane Electri…AS215859Hetzner Cloud - S…

Networks observed one and two hops upstream of AS5466 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

241

adjacent networks

Upstreams
4619%
Peers
18175%
Downstreams
146%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 46.

Upstreams of AS5466
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer1,38548
AS174Cogent Communications, LLCUSPeer49625
AS9002RETN LimitedGBPeer1367
AS13030Init7 (Switzerland) Ltd.CHPeer1364
AS18106Viewqwest Pte LtdSGPeer1354
AS6939Hurricane Electric LLCUSPeer1327
AS6667Elisa OyjFIPeer1224
AS14537Continent 8 LLCUSPeer1164
AS6758Monaco Telecom S.A.MCPeer7878
AS34549meerfarbig GmbH & Co. KGDEPeer723

Prefixes

All 28

The largest blocks AS5466 originates, widest first.

Largest prefixes originated by AS5466
PrefixAddressesVisibility
86.40.0.0/13524k76/78
83.70.0.0/15131k77/78
95.44.0.0/15131k77/78
51.171.0.0/1665.5k77/78
159.134.0.0/1665.5k77/78
217.183.0.0/1665.5k77/78
213.94.128.0/1732.8k77/78
82.141.192.0/1816.4k77/78
194.125.128.0/1816.4k77/78
62.77.160.0/198.2k77/78

Routing health

How AS5466'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

  • Valid89.3%25
  • Invalid0.0%0
  • No ROA10.7%3

Propagation

  • Globally propagated90% of full-feed peers or more100.0%28
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 25 prefixes

IPv6 — 3 prefixes

  • /2934.4B × /6433.3%1
  • /4865.5k × /6466.7%2

Recent changes

Announcements that started or stopped since 13th Oct 2026.

No announcement by AS5466 started or stopped in this period.

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