subnet.im

AS138375CERNET2 regional IX at Inner Mongolia University

ChinaRegistryAPNIC

As of 26th September 2026, AS138375 (CERNET2 regional IX at Inner Mongolia…), a network registered in China with APNIC, originates 41 IPv6 prefixes. It is seen behind 1 upstream network, most often AS23910 (China Next Generation Internet CERNET2). 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.

At a glance

IPv4 prefixes

0

IPv6 prefixes

41

IPv4 addresses

0

IPv6 /64s

4.3B

Upstream graph

The networks AS138375 is seen behind, one and two hops out, drawn from real AS paths.

AS138375Toward the internet core
Upstream graph for AS138375: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS138375CERNET2 regional …This networkAS23910China Next Genera…AS4134China Telecom Bac…AS4538China Education a…

Networks observed one and two hops upstream of AS138375 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 AS138375
NetworkCountryRelationshipPathsVantage pts
AS23910China Next Generation Internet CERNET2CNPeer2877

Prefixes

All 41

The largest blocks AS138375 originates, widest first.

Largest prefixes originated by AS138375
PrefixAddressesVisibility
240c:c246::/324.3B × /647/64
2001:250:e00::/4865.5k × /647/64
2001:250:e01::/4865.5k × /647/64
2001:250:e02::/4865.5k × /647/64
2001:250:e04::/4865.5k × /647/64
2001:250:e05::/4865.5k × /647/64
2001:250:e06::/4865.5k × /647/64
2001:250:e07::/4865.5k × /647/64
2001:250:e08::/4865.5k × /647/64
2001:250:e09::/4865.5k × /647/64

Routing health

How AS138375'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%41
  • 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%41

Prefix sizes

IPv6 — 41 prefixes

  • /324.3B × /642.4%1
  • /4865.5k × /6497.6%40

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS138375 started or stopped in this period.

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