SUBNET.IM

AS21301Natwest Markets PLC

United KingdomRegistryRIPE NCC

At a glance

IPv4 prefixes

12

IPv6 prefixes

0

IPv4 addresses

4.4k

IPv6 /64s

0

Upstream graph

The networks AS21301 is seen behind, one and two hops out, drawn from real AS paths.

AS21301Toward the internet core
Upstream graph for AS21301: 8 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS21301Natwest Markets P…This networkAS1273Vodafone Group PLCAS2856British Telecommu…AS32787Akamai (Prolexic)AS6667Elisa OyjAS41811CONVERGENCE (GROU…AS5400British Telecommu…AS9002RETN LimitedAS6461Zayo Bandwidth

Networks observed one and two hops upstream of AS21301 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

6

adjacent networks

Upstreams
350%
Peers
350%
Downstreams
00%

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

Upstreams of AS21301
NetworkCountryRelationshipPathsVantage pts
AS32787Akamai (Prolexic)USPeer72080
AS1273Vodafone Group PLCEUPeer16379
AS2856British TelecommunicationsGBPeer1515

Prefixes

The largest blocks AS21301 originates, widest first.

Largest prefixes originated by AS21301
PrefixAddressesVisibility
155.136.56.0/221k79/80
155.136.200.0/2351249/80
155.136.202.0/2351250/80
155.136.56.0/2425680/80
155.136.57.0/2425680/80
155.136.58.0/2425680/80
155.136.59.0/2425680/80
155.136.144.0/2425680/80
155.136.146.0/2425680/80
155.136.151.0/2425680/80

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