subnet.im

AS22561Lumen (fka LightCore)

United StatesRegistryARINTypeEyeball

As of 23rd October 2026, AS22561 (Lumen (fka LightCore)), an access network registered in the United States with ARIN, originates 314 IPv4 prefixes covering 1.4M addresses. By IPv4 address space that makes it the 370th-largest of the 79,658 networks we see originating IPv4, and the 89th-largest of 18,483 in the United States. It is seen behind 1 upstream network, most often AS209 (Lumen (ex. Qwest)), and in front of 11 downstream networks. None of its announcements have a valid RPKI ROA. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

314

IPv6 prefixes

0

IPv4 addresses

1.4M

IPv6 /64s

0

Upstream graph

The networks AS22561 is seen behind, one and two hops out, drawn from real AS paths.

AS22561Toward the internet core
Upstream graph for AS22561: 2 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS22561Lumen (fka LightC…This networkAS209Lumen (ex. Qwest)AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS22561 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

25

adjacent networks

Upstreams
14%
Peers
1352%
Downstreams
1144%

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

Upstreams of AS22561
NetworkCountryRelationshipPathsVantage pts
AS209Lumen (ex. Qwest)USPeer43,42877

Prefixes

All 314

The largest blocks AS22561 originates, widest first.

Largest prefixes originated by AS22561
PrefixAddressesVisibility
184.156.0.0/15131k77/77
184.158.0.0/15131k77/77
72.160.0.0/1665.5k77/77
75.120.0.0/1665.5k77/77
75.121.0.0/1665.5k77/77
99.194.0.0/1665.5k77/77
99.195.0.0/1665.5k77/77
207.118.0.0/1665.5k77/77
207.119.0.0/1665.5k77/77
69.29.0.0/1732.8k77/77

Routing health

How AS22561'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

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%314

Propagation

  • Globally propagated90% of full-feed peers or more100.0%314
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 314 prefixes

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

80 announced and 98 withdrawn in all; the most recent are shown.

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