AS24350CERNET2 IX at Beijing University of Posts and Telecommunications
ChinaRegistryAPNICAs of 26th September 2026, AS24350 (CERNET2 IX at Beijing University of…), a network registered in China with APNIC, originates 34 IPv6 prefixes. It is seen behind 1 upstream network, most often AS23910 (China Next Generation Internet CERNET2). 88% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 12% of its routes reach at least 90% of full-feed peers, and 34 prefixes are also originated by another network.
At a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS24350 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS24350 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.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS23910China Next Generation Internet CERNET2 | CN | Peer | 462 | 63 |
Prefixes
All 34The largest blocks AS24350 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 2402:2000::/32 | 4.3B × /64 | 63/64 |
| 240c:c018::/32 | 4.3B × /64 | 7/64 |
| 2001:250:20b::/48 | 65.5k × /64 | 7/64 |
| 2001:da8:ad::/48 | 65.5k × /64 | 7/64 |
| 2001:da8:202::/48 | 65.5k × /64 | 7/64 |
| 2001:da8:205::/48 | 65.5k × /64 | 7/64 |
| 2001:da8:206::/48 | 65.5k × /64 | 7/64 |
| 2001:da8:207::/48 | 65.5k × /64 | 7/64 |
| 2001:da8:208::/48 | 65.5k × /64 | 7/64 |
| 2001:da8:214::/48 | 65.5k × /64 | 7/64 |
Routing health
How AS24350'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
- Valid88.2%30
- Invalid0.0%0
- No ROA11.8%4
Propagation
- Globally propagated90% of full-feed peers or more11.8%4
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%88.2%30
Prefix sizes
IPv6 — 34 prefixes
- /324.3B × /645.9%2
- /4865.5k × /6494.1%32
Recent changes
Announcements that started or stopped since 28th Aug 2026.
- Withdrawn121.194.224.0/1921st Sept 2026
- Withdrawn202.112.10.0/2421st Sept 2026
- Withdrawn202.112.42.0/2421st Sept 2026
- Withdrawn202.112.9.0/2421st Sept 2026
- Withdrawn202.127.254.0/2421st Sept 2026
- Withdrawn211.71.192.0/2021st Sept 2026
- Withdrawn58.200.125.0/2421st Sept 2026
- Withdrawn58.200.21.0/2421st Sept 2026
- Withdrawn58.200.22.0/2421st Sept 2026
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.