SUBNET.IM

AS21451Banca Sella Holding S.p.A.

ItalyRegistryRIPE NCC

At a glance

IPv4 prefixes

24

IPv6 prefixes

0

IPv4 addresses

14.8k

IPv6 /64s

0

Upstream graph

The networks AS21451 is seen behind, one and two hops out, drawn from real AS paths.

AS21451Toward the internet core
Upstream graph for AS21451: 8 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS21451Banca Sella Holdi…This networkAS12874Fastweb SpAAS30722Fastweb SpAAS32787Akamai (Prolexic)AS1299Arelion (fka. Tel…AS3303Swisscom (Schweiz…AS3356Lumen (Level 3)AS1273Vodafone Group PLCAS6461Zayo Bandwidth

Networks observed one and two hops upstream of AS21451 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 AS21451
NetworkCountryRelationshipPathsVantage pts
AS32787Akamai (Prolexic)USPeer1,84080
AS12874Fastweb SpAITPeer6161
AS30722Fastweb SpAITPeer1919

Prefixes

The largest blocks AS21451 originates, widest first.

Largest prefixes originated by AS21451
PrefixAddressesVisibility
213.218.32.0/198.2k80/80
213.218.60.0/221k80/80
213.218.32.0/2425680/80
213.218.33.0/2425680/80
213.218.34.0/2425680/80
213.218.35.0/2425680/80
213.218.38.0/2425680/80
213.218.39.0/2425680/80
213.218.40.0/2425680/80
213.218.41.0/2425680/80

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