Autonomous System
AS23910 · China Next Generation Internet CERNET2
Overview
AS23910 is announced on the Internet: RIPE RIS route collectors currently see no IPv4 prefix and 6 IPv6 prefixes originated by this network. In the paths the collectors record, it has 3 upstream neighbours (transit providers or peers) and 45 downstream neighbours (customers or networks it carries). Its most visible upstreams are China Next Generation Internet Beijing IX (AS23911), China Education and Research Network Center (AS4538), and No.31,Jin-rong Street (AS4134). AS23910 was assigned by APNIC, and its registration country is China.
Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 10:52 PM UTC. This page is refreshed at most every 12 hours.
Go further
No IPv4 address of this network is known right now, so there is nothing to trace to.
Announced prefixes
IPv4 prefixes (none)
None currently seen.
IPv6 prefixes (6 prefixes)
| Prefix |
|---|
| 2001:250::/32 |
| 2001:251::/32 |
| 2001:da8::/32 |
| 2001:da8:20d::/48 |
| 240c:c000::/20 |
| 240c:c0a9:1000::/40 |
Neighbours
Upstreams (transit or peers) (3)
| AS | Network | Visibility |
|---|---|---|
| AS23911 | China Next Generation Internet Beijing IX | 8,833 |
| AS4538 | China Education and Research Network Center | 289 |
| AS4134 | No.31,Jin-rong Street | 221 |
Downstreams (customers) (45)
| AS | Network | Visibility |
|---|---|---|
| AS133111 | CERNET New Technology Co., Ltd | 2,317 |
| AS24348 | CERNET2 IX at Tsinghua University | 1,134 |
| AS4538 | China Education and Research Network Center | 719 |
| AS24364 | CERNET2 IX at Shanghai Jiaotong University | 483 |
| AS133512 | CERNET New Technology Co., Ltd | 420 |
| AS24357 | CERNET2 IX at South China University of Technology | 395 |
| AS24349 | CERNET2 IX at Peking University | 266 |
| AS24369 | CERNET2 IX at Northeast University | 266 |
| AS24360 | CERNET2 IX at Zhengzhou University | 263 |
| AS24352 | CERNET2 IX at Tianjin University | 255 |
| AS24372 | - | 255 |
| AS24350 | - | 254 |
| AS24371 | - | 252 |
| AS138371 | - | 252 |
| AS24367 | - | 247 |
| AS38587 | - | 247 |
| AS138369 | - | 244 |
| AS24363 | - | 242 |
| AS24362 | - | 240 |
| AS24353 | - | 17 |
| AS24355 | - | 17 |
| AS24356 | - | 17 |
| AS24358 | - | 17 |
| AS24359 | - | 17 |
| AS138376 | - | 17 |
| AS138377 | - | 17 |
| AS138378 | - | 17 |
| AS138381 | - | 17 |
| AS138442 | - | 17 |
| AS24351 | - | 13 |
The 30 most visible of 45.
Visibility is RIPEstat's count of how often the route collectors observed the link. It compares neighbours with each other; it is not a traffic volume.
How to read this page
An Autonomous System (AS) is a network run under one routing policy: an internet provider, a cloud, a content network, a university. Each one has a number, its ASN, assigned by a regional registry (ARIN, RIPE NCC, APNIC, LACNIC, AFRINIC), and uses BGP, the protocol networks use to tell each other where addresses are, to announce the blocks of addresses it delivers to.
A prefix such as 203.0.113.0/24 is a block of addresses: the number after the slash says how many bits are fixed, so a /24 holds 256 IPv4 addresses and a /16 holds 65,536. Networks often announce a large block and smaller pieces of it at the same time, which is why the address total counts each address once.
Neighbours come from the paths themselves. A network that appears just before this one in a path, on the collector's side, is an upstream: a transit provider or a peer. One that appears just after it is a downstream, usually a customer. Peering at an internet exchange also shows up as an upstream, so the upstream list is not a list of paid transit.
The data comes from RIPEstat, run by the RIPE NCC, which gathers the routing tables of hundreds of networks through its RIS route collectors. This page reads it when it is visited and keeps it for 12 hours at most; the BGP viewer reads it live.