SUBNET.IM

AS61251Host4Biz sp. z o.o.

PolandRegistryRIPE NCC

At a glance

IPv4 prefixes

4

IPv6 prefixes

1

IPv4 addresses

2.8k

IPv6 /64s

34.4B

Upstream graph

The networks AS61251 is seen behind, one and two hops out, drawn from real AS paths.

AS61251Toward the internet core
Upstream graph for AS61251: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS61251Host4Biz sp. z o.…This networkAS8308NAUKOWA I AKADEMI…AS15694Atman Sp. z o.o.AS6939Hurricane Electri…AS9141P4 Sp. z o.o.AS174Cogent Communicat…AS6461Zayo Bandwidth

Networks observed one and two hops upstream of AS61251 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
233%
Peers
350%
Downstreams
117%

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

Upstreams of AS61251
NetworkCountryRelationshipPathsVantage pts
AS15694Atman Sp. z o.o.PLPeer43043
AS8308NAUKOWA I AKADEMICKA SIEC KOMPUTEROWA - PANSTWOWY INSTYTUT BADAWCZYPLPeer42197

Prefixes

The largest blocks AS61251 originates, widest first.

Largest prefixes originated by AS61251
PrefixAddressesVisibility
77.73.36.0/221k79/80
185.151.244.0/221k79/80
91.195.12.0/2351279/80
91.232.127.0/2425679/80
2a07:7c80::/2934.4B × /6461/62

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