AS23520Columbus Networks USA, Inc.

United StatesRegistryARINTypeCarrier

At a glance

IPv4 prefixes

125

IPv6 prefixes

IPv4 addresses

441k

IPv6 /64s

8.6B

Upstream graph

The networks AS23520 is seen behind, one and two hops out, drawn from real AS paths.

AS23520Toward the internet core

Networks observed one and two hops upstream of AS23520 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

407

adjacent networks

Upstreams: 236%
Peers: 21052%
Downstreams: 17443%

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

Upstreams of AS23520
Network	Country	Relationship	Paths	Vantage pts
AS1299Arelion (fka. Telia Carrier)	SE	Peer	260,816	140
AS6830Liberty Global Europe Holding B.V.	EU	Peer	180,691	142
AS174Cogent Communications, LLC	US	Peer	154,715	107
AS6762Telecom Italia Sparkle (Seabone)	IT	Peer	84,789	91
AS3257GTT Communications Inc.	US	Peer	40,701	122
AS3303Swisscom (Schweiz) AG	CH	Peer	7,738	2
AS7195EdgeUno	CO	Peer	1,052	46
AS22356Durand do Brasil Ltda	BR	Peer	274	2
AS27951Media Commerce Partners S.A	CO	Peer	240	76
AS16735Algar Telecom	BR	Peer	143	2

Prefixes

All 127

The largest blocks AS23520 originates, widest first.

Largest prefixes originated by AS23520
Prefix	Addresses	Visibility
69.79.0.0/16	65.5k	2/80
72.252.0.0/16	65.5k	2/80
190.242.0.0/16	65.5k	79/80
63.245.0.0/17	32.8k	79/80
67.230.0.0/17	32.8k	79/80
69.79.128.0/17	32.8k	79/80
63.245.0.0/18	16.4k	79/80
67.230.64.0/18	16.4k	79/80
69.79.0.0/18	16.4k	79/80
190.131.192.0/18	16.4k	79/80

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