subnet.im

AS38272China Education and Research Network (CERNET)

ChinaRegistryAPNIC

As of 26th September 2026, AS38272 (China Education and Research Network…), a network registered in China with APNIC, originates 1 IPv6 prefix. It is seen behind 1 upstream network, most often AS38255 (China Education and Research Network…), and in front of 39 downstream networks. 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

0

IPv6 prefixes

1

IPv4 addresses

0

IPv6 /64s

4.3B

Upstream graph

The networks AS38272 is seen behind, one and two hops out, drawn from real AS paths.

AS38272Toward the internet core
Upstream graph for AS38272: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS38272China Education a…This networkAS38255China Education a…AS6939Hurricane Electri…AS23911China Next Genera…

Networks observed one and two hops upstream of AS38272 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

80

adjacent networks

Upstreams
11%
Peers
4050%
Downstreams
3949%

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

Upstreams of AS38272
NetworkCountryRelationshipPathsVantage pts
AS38255China Education and Research Network (CERNET)CNPeer2,55764

Prefixes

The largest blocks AS38272 originates, widest first.

Largest prefixes originated by AS38272
PrefixAddressesVisibility
2001:253::/324.3B × /6464/64

Routing health

How AS38272'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 more100.0%1
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 27th Aug 2026.

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