subnet.im

AS138373CERNET2 regional IX at Fuzhou University

ChinaRegistryAPNIC

As of 10th November 2026, AS138373 (CERNET2 regional IX at Fuzhou University), a network registered in China with APNIC, originates 38 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

38

IPv4 addresses

0

IPv6 /64s

2.5M

Upstream graph

The networks AS138373 is seen behind, one and two hops out, drawn from real AS paths.

AS138373Toward the internet core
Upstream graph for AS138373: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS138373CERNET2 regional …This networkAS23910China Next Genera…AS4538China Education a…AS23911China Next Genera…

Networks observed one and two hops upstream of AS138373 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 AS138373
NetworkCountryRelationshipPathsVantage pts
AS23910China Next Generation Internet CERNET2CNPeer1143

Prefixes

All 38

The largest blocks AS138373 originates, widest first.

Largest prefixes originated by AS138373
PrefixAddressesVisibility
2001:250:6802::/4865.5k × /643/63
2001:250:6803::/4865.5k × /643/63
2001:250:6804::/4865.5k × /643/63
2001:250:6805::/4865.5k × /643/63
2001:250:6806::/4865.5k × /643/63
2001:250:6808::/4865.5k × /643/63
2001:250:680b::/4865.5k × /643/63
2001:250:680c::/4865.5k × /643/63
2001:250:680e::/4865.5k × /643/63
2001:250:680f::/4865.5k × /643/63

Routing health

How AS138373'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%38
  • 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%38

Prefix sizes

IPv6 — 38 prefixes

  • /4865.5k × /64100.0%38

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS138373 started or stopped in this period.

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