SUBNET.IM

AS21019S.A. spol. s r.o.

SlovakiaRegistryRIPE NCC

At a glance

IPv4 prefixes

1

IPv6 prefixes

0

IPv4 addresses

4.1k

IPv6 /64s

0

Upstream graph

The networks AS21019 is seen behind, one and two hops out, drawn from real AS paths.

AS21019Toward the internet core
Upstream graph for AS21019: 8 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS21019S.A. spol. s r.o.This networkAS3303Swisscom (Schweiz…AS5578SWAN, a.s.AS49544i3D.net B.VAS6939Hurricane Electri…AS174Cogent Communicat…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3356Lumen (Level 3)

Networks observed one and two hops upstream of AS21019 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

13

adjacent networks

Upstreams
323%
Peers
1077%
Downstreams
00%

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

Upstreams of AS21019
NetworkCountryRelationshipPathsVantage pts
AS5578SWAN, a.s.SKPeer7777
AS3303Swisscom (Schweiz) AGCHPeer11
AS49544i3D.net B.VNLPeer11

Prefixes

The largest blocks AS21019 originates, widest first.

Largest prefixes originated by AS21019
PrefixAddressesVisibility
80.81.224.0/204.1k79/80

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