Address space
AS24362 CNGI-HEF-IX-AS-AP CERNET2 IX at University of Science and Technology of China
IPv4 prefixes
11
17.15K addresses
IPv6 prefixes
1
Most common size
/22
IPv4
Flagged
0
Shape
Prefix sizes
How this network carves its IPv4 space. A wall of /24s usually means many small customer assignments or fine-grained traffic engineering; a few short prefixes means large contiguous allocations announced whole.
Shape
Prefix sizes
Geography
Where the space lands
| Country | Name | Prefixes |
|---|---|---|
| CN | China | 12 |
Inventory
All prefixes
| Prefix | Family | Addresses | Country | Flags |
|---|---|---|---|---|
| 121.251.0.0/20 | IPv4 | 4,096 | CN | |
| 121.251.16.0/21 | IPv4 | 2,048 | CN | |
| 121.251.24.0/22 | IPv4 | 1,024 | CN | |
| 121.251.28.0/23 | IPv4 | 512 | CN | |
| 121.251.32.0/22 | IPv4 | 1,024 | CN | |
| 121.251.36.0/23 | IPv4 | 512 | CN | |
| 121.251.48.0/22 | IPv4 | 1,024 | CN | |
| 121.251.52.0/24 | IPv4 | 256 | CN | |
| 121.251.56.0/23 | IPv4 | 512 | CN | |
| 121.251.64.0/20 | IPv4 | 4,096 | CN | |
| 121.251.88.0/21 | IPv4 | 2,048 | CN | |
| 2400:b600::/32 | IPv6 | — | CN |