SUBNET.IM

AS51800FIBER Network s.r.o.

CzechiaRegistryRIPE NCC

At a glance

IPv4 prefixes

1

IPv6 prefixes

1

IPv4 addresses

2k

IPv6 /64s

4.3B

Upstream graph

The networks AS51800 is seen behind, one and two hops out, drawn from real AS paths.

AS51800Toward the internet core
Upstream graph for AS51800: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS51800FIBER Network s.r…This networkAS6939Hurricane Electri…AS8218Zayo EuropeAS24940Hetzner Online Gm…AS49025PRO-ZETA a.s.AS51400SPOJE.NET s.r.o.AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS6461Zayo BandwidthAS34288Kantonsschule ZugAS39392SH.cz s.r.o.AS8251FreeTel, s.r.o.AS47232ISP Alliance a.s.

Networks observed one and two hops upstream of AS51800 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

41

adjacent networks

Upstreams
1024%
Peers
2971%
Downstreams
25%

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

Upstreams of AS51800
NetworkCountryRelationshipPathsVantage pts
AS49025PRO-ZETA a.s.CZPeer131106
AS51400SPOJE.NET s.r.o.CZPeer1616
AS6939Hurricane Electric LLCUSPeer88
AS32590Valve CorporationUSPeer22
AS24940Hetzner Online GmbHDEPeer22
AS49544i3D.net B.VNLPeer22
AS8218Zayo EuropeFRPeer22
AS22356Durand do Brasil LtdaBRPeer11
AS24482SG.GSSGPeer11
AS132337AxclusiveSGPeer11

Prefixes

The largest blocks AS51800 originates, widest first.

Largest prefixes originated by AS51800
PrefixAddressesVisibility
217.28.80.0/212k79/80
2a02:28a8::/324.3B × /6462/62

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