Address space
AS24349 CNGI-BJ-IX3-AS-AP CERNET2 IX at Peking University
IPv4 prefixes
2
288 addresses
IPv6 prefixes
36
Most common size
/24
IPv4
Flagged
1
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 | 38 |
Review
Flagged prefixes
| Prefix | Family | Addresses | Country | Flags |
|---|---|---|---|---|
| 202.38.140.0/27 | IPv4 | 32 | CN | Too specific |
A flag is an observation, not an accusation. Very large and very specific prefixes are both legitimate in the right context.
Inventory
All prefixes
| Prefix | Family | Addresses | Country | Flags |
|---|---|---|---|---|
| 162.105.126.0/24 | IPv4 | 256 | CN | |
| 202.38.140.0/27 | IPv4 | 32 | CN | Too specific |
| 2001:250:205::/48 | IPv6 | — | CN | |
| 2001:250:207::/48 | IPv6 | — | CN | |
| 2001:250:20c::/48 | IPv6 | — | CN | |
| 2001:250:210::/48 | IPv6 | — | CN | |
| 2001:250:212::/48 | IPv6 | — | CN | |
| 2001:250:218::/48 | IPv6 | — | CN | |
| 2001:250:21e::/48 | IPv6 | — | CN | |
| 2001:250:223::/48 | IPv6 | — | CN | |
| 2001:250:22d::/48 | IPv6 | — | CN | |
| 2001:250:22e::/48 | IPv6 | — | CN | |
| 2001:250:234::/48 | IPv6 | — | CN | |
| 2001:250:236::/47 | IPv6 | — | CN | |
| 2001:250:252::/48 | IPv6 | — | CN | |
| 2001:250:5060::/48 | IPv6 | — | CN | |
| 2001:da8:ac::/48 | IPv6 | — | CN | |
| 2001:da8:201::/48 | IPv6 | — | CN | |
| 2001:da8:204::/48 | IPv6 | — | CN | |
| 2001:da8:20f::/48 | IPv6 | — | CN | |
| 2001:da8:21c::/48 | IPv6 | — | CN | |
| 2001:da8:22d::/48 | IPv6 | — | CN | |
| 2001:da8:230::/48 | IPv6 | — | CN | |
| 2001:da8:233::/48 | IPv6 | — | CN | |
| 2001:da8:234::/46 | IPv6 | — | CN | |
| 2001:da8:23b::/48 | IPv6 | — | CN | |
| 2001:da8:240::/48 | IPv6 | — | CN | |
| 2001:da8:244::/48 | IPv6 | — | CN | |
| 2001:da8:246::/48 | IPv6 | — | CN | |
| 2001:da8:253::/48 | IPv6 | — | CN | |
| 2001:da8:259::/48 | IPv6 | — | CN | |
| 2001:da8:274::/47 | IPv6 | — | CN | |
| 2001:da8:279::/48 | IPv6 | — | CN | |
| 2001:da8:27b::/48 | IPv6 | — | CN | |
| 2001:da8:27e::/48 | IPv6 | — | CN | |
| 2401:ec00::/32 | IPv6 | — | CN | |
| 240c:c001::/32 | IPv6 | — | CN | |
| 240c:c017::/32 | IPv6 | — | CN |