subnet.im

AS51400SPOJE.NET s.r.o.

CzechiaRegistryRIPE NCC

As of 10th November 2026, AS51400 (SPOJE.NET s.r.o.), a network registered in Czechia with RIPE NCC, originates 1 IPv4 prefix covering 2k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 25,846th-largest of the 80,733 networks we see originating IPv4, and the 214th-largest of 576 in Czechia. It is seen behind 3 upstream networks, most often AS8251 (FreeTel, s.r.o.) and AS51800 (FIBER Network s.r.o.), and in front of 1 downstream network. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

1

IPv6 prefixes

1

IPv4 addresses

2k

IPv6 /64s

65.5k

Upstream graph

The networks AS51400 is seen behind, one and two hops out, drawn from real AS paths.

AS51400Toward the internet core
Upstream graph for AS51400: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS51400SPOJE.NET s.r.o.This networkAS8251FreeTel, s.r.o.AS47232ISP Alliance a.s.AS51800FIBER Network s.r…AS1299Arelion (fka. Tel…AS6939Hurricane Electri…AS49025PRO-ZETA a.s.

Networks observed one and two hops upstream of AS51400 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

7

adjacent networks

Upstreams
343%
Peers
343%
Downstreams
114%

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

Upstreams of AS51400
NetworkCountryRelationshipPathsVantage pts
AS8251FreeTel, s.r.o.CZPeer145127
AS51800FIBER Network s.r.o.CZPeer88
AS47232ISP Alliance a.s.CZPeer44

Prefixes

The largest blocks AS51400 originates, widest first.

Largest prefixes originated by AS51400
PrefixAddressesVisibility
77.87.240.0/212k76/76
2001:67c:2190::/4865.5k × /6463/63

Routing health

How AS51400's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid100.0%2
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%2
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS51400 started or stopped in this period.

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