AS5400British Telecommunications (International)

United KingdomRegistryRIPE NCCTypeCarrier

At a glance

IPv4 prefixes

IPv6 prefixes

IPv4 addresses

734k

IPv6 /64s

Upstream graph

The networks AS5400 is seen behind, one and two hops out, drawn from real AS paths.

AS5400Toward the internet core

Networks observed one and two hops upstream of AS5400 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

273

adjacent networks

Upstreams: 3412%
Peers: 17865%
Downstreams: 6122%

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

Upstreams of AS5400
Network	Country	Relationship	Paths	Vantage pts
AS3356Lumen (Level 3)	US	Peer	15,365	48
AS1299Arelion (fka. Telia Carrier)	SE	Peer	12,236	49
AS6453TATA Communications (America) Inc	US	Peer	6,524	18
AS3491PCCW Global (HK) Ltd.	HK	Peer	4,382	11
AS6939Hurricane Electric LLC	US	Peer	3,714	16
AS2497Internet Initiative Japan Inc.	JP	Peer	3,395	5
AS174Cogent Communications, LLC	US	Peer	2,710	15
AS7713PT Telkom Indonesia Tbk	ID	Peer	2,496	2
AS12956Telxius (Telefonica Global)	ES	Peer	2,324	6
AS6762Telecom Italia Sparkle (Seabone)	IT	Peer	2,227	14

Prefixes

All 124

The largest blocks AS5400 originates, widest first.

Largest prefixes originated by AS5400
Prefix	Addresses	Visibility
62.134.0.0/16	65.5k	80/80
62.180.0.0/16	65.5k	80/80
195.100.0.0/16	65.5k	80/80
195.163.0.0/16	65.5k	80/80
206.73.0.0/16	65.5k	80/80
213.15.0.0/16	65.5k	80/80
62.5.0.0/17	32.8k	80/80
62.102.0.0/17	32.8k	80/80
166.49.128.0/17	32.8k	80/80
62.173.192.0/18	16.4k	80/80

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