AS138371
China Education And Research Network (cernet) — cernic.net
Summary
| Country |
 China
|
| Organization | China Education And Research Network (cernet) |
| Domain | cernic.net |
| Number of IPv4 | 23,296 |
| Number of IPv6 | 5.5463× 1029 |
| AS Type | Education |
| Registry | APNIC |
| Allocated | January 01, 1970 (about 56 years ago) |
| Updated | September 03, 2020 (about 4 years ago) |
IP Ranges
AS138371 announces 13 IPv4 ranges and 34 IPv6 ranges.
That's a total of 23,296 IPv4 addresses and 5.5463× 1029 IPv6 addresses.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 121.249.192.0/20 |
China Education And Research Network
|
4,096 | APNIC | ALLOCATED PORTABLE |
| 121.249.208.0/22 |
China Education And Research Network
|
1,024 | APNIC | ALLOCATED PORTABLE |
| 121.249.212.0/23 |
China Education And Research Network
|
512 | APNIC | ALLOCATED PORTABLE |
| 121.249.214.0/23 |
China Education And Research Network
|
512 | APNIC | ALLOCATED PORTABLE |
| 121.249.216.0/21 |
China Education And Research Network
|
2,048 | APNIC | ALLOCATED PORTABLE |
| 121.249.224.0/20 |
China Education And Research Network
|
4,096 | APNIC | ALLOCATED PORTABLE |
| 121.251.136.0/21 |
China Education And Research Network
|
2,048 | APNIC | ALLOCATED PORTABLE |
| 121.251.208.0/21 |
China Education And Research Network
|
2,048 | APNIC | ALLOCATED PORTABLE |
| 121.251.216.0/21 |
China Education And Research Network
|
2,048 | APNIC | ALLOCATED PORTABLE |
| 121.251.224.0/20 |
China Education And Research Network
|
4,096 | APNIC | ALLOCATED PORTABLE |
| 121.251.232.0/24 |
China Education And Research Network
|
256 | APNIC | ALLOCATED PORTABLE |
| 121.251.233.0/24 |
China Education And Research Network
|
256 | APNIC | ALLOCATED PORTABLE |
| 121.251.234.0/24 |
China Education And Research Network
|
256 | APNIC | ALLOCATED PORTABLE |
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 2001:250:5805::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5806::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5816::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5820::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5821::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5822::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5823::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5828::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:582a::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5831::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5833::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5845::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5846::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5847::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5848::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5849::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:584a::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5862::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5864::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5866::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5875::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:587c::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:587d::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:250:5895::/48 |
Cernet Ipv6 Backbone
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:da8:cc::/48 |
China Next Generation Internet Cernet2
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:da8:7013::/48 |
China Next Generation Internet Cernet2
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 2001:da8:701f::/48 |
China Next Generation Internet Cernet2
|
1.2089× 1024 | APNIC | ALLOCATED PORTABLE |
| 240b:e002::/32 |
China Education And Research Network (cernet)
|
7.9228× 1028 | APNIC | ALLOCATED PORTABLE |
| 240c:ca02::/32 |
China Education And Research Network (cernet)
|
7.9228× 1028 | APNIC | ALLOCATED PORTABLE |
| 240c:ca03::/32 |
China Education And Research Network (cernet)
|
7.9228× 1028 | APNIC | ALLOCATED PORTABLE |
| 240c:ca05::/32 |
China Education And Research Network (cernet)
|
7.9228× 1028 | APNIC | ALLOCATED PORTABLE |
| 240c:ca07::/32 |
China Education And Research Network (cernet)
|
7.9228× 1028 | APNIC | ALLOCATED PORTABLE |
| 240c:ca0c::/32 |
China Education And Research Network (cernet)
|
7.9228× 1028 | APNIC | ALLOCATED PORTABLE |
| 240c:ca23::/32 |
China Education And Research Network (cernet)
|
7.9228× 1028 | APNIC | ALLOCATED PORTABLE |
Peers
AS138371 actively fosters the following peering relationships that enhance network performance through direct, settlement-free traffic exchange. Even with a modest number of peers, each connection serves as a strategic asset—optimizing routing, reducing latency, and minimizing transit costs.
Upstreams
There are currently no upstream providers for AS138371. This means the network doesn’t subscribe to traditional upstream services for global connectivity. Instead, it likely relies on direct peering or its own infrastructure to reach external networks. While this can reduce transit costs, it requires a robust peering strategy to maintain broad reachability and ensure redundancy.
Downstreams
AS138371 serves as a transit provider the following ASes, delivering the BGP routes needed for global connectivity. This downstream relationship underscores AS138371's role in extending Internet access beyond its own infrastructure.