subnet.im

AS131490CERNET Corporation

ChinaRegistryAPNIC

As of 10th November 2026, AS131490 (CERNET Corporation), a network registered in China with APNIC, originates 1 IPv6 prefix. It is seen behind 1 upstream network, most often AS24348 (CERNET2 IX at Tsinghua University). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 0% 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

1

IPv4 addresses

0

IPv6 /64s

4.3B

Upstream graph

The networks AS131490 is seen behind, one and two hops out, drawn from real AS paths.

AS131490Toward the internet core
Upstream graph for AS131490: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS131490CERNET CorporationThis networkAS24348CERNET2 IX at Tsi…AS4538China Education a…AS23910China Next Genera…

Networks observed one and two hops upstream of AS131490 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS131490
NetworkCountryRelationshipPathsVantage pts
AS24348CERNET2 IX at Tsinghua UniversityCNPeer77

Prefixes

The largest blocks AS131490 originates, widest first.

Largest prefixes originated by AS131490
PrefixAddressesVisibility
240c:c0a1::/324.3B × /647/63

Routing health

How AS131490'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%1
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more0.0%0
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%100.0%1

Prefix sizes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 11th Oct 2026.

No announcement by AS131490 started or stopped in this period.

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