subnet.im

AS45576Tsinghua University

ChinaRegistryAPNIC

As of 26th September 2026, AS45576 (Tsinghua University), a network registered in China with APNIC, originates 4 IPv6 prefixes. It is seen behind 2 upstream networks, most often AS24348 (CERNET2 IX at Tsinghua University) and AS24239 (TWD2 Education and Research Network), and in front of 1 downstream network. None of its announcements have a valid RPKI ROA. 100% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

0

IPv6 prefixes

4

IPv4 addresses

0

IPv6 /64s

4.3B

Upstream graph

The networks AS45576 is seen behind, one and two hops out, drawn from real AS paths.

AS45576Toward the internet core
Upstream graph for AS45576: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS45576Tsinghua Universi…This networkAS24239TWD2 Education an…AS24348CERNET2 IX at Tsi…AS4842Tianhai InfoTechAS209300Wende TanAS4538China Education a…AS23910China Next Genera…

Networks observed one and two hops upstream of AS45576 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 AS45576
NetworkCountryRelationshipPathsVantage pts
AS24348CERNET2 IX at Tsinghua UniversityCNPeer25264
AS24239TWD2 Education and Research NetworkCNPeer3838

Prefixes

The largest blocks AS45576 originates, widest first.

Largest prefixes originated by AS45576
PrefixAddressesVisibility
2402:f000::/324.3B × /6460/64
2402:f000:2::/4865.5k × /6464/64
2402:f000:3::/4865.5k × /6464/64
2402:f000:4::/4865.5k × /6464/64

Routing health

How AS45576'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

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%4

Propagation

  • Globally propagated90% of full-feed peers or more100.0%4
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv6 — 4 prefixes

  • /324.3B × /6425.0%1
  • /4865.5k × /6475.0%3

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS45576 started or stopped in this period.

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