Address space
AS3661 ERX-CUHKNET The Chinese University of Hong Kong
IPv4 prefixes
14
73.98K addresses
IPv6 prefixes
2
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 |
|---|---|---|
| HK | Hong Kong | 16 |
Inventory
All prefixes
| Prefix | Family | Addresses | Country | Flags |
|---|---|---|---|---|
| 103.49.160.0/22 | IPv4 | 1,024 | HK | |
| 123.255.64.0/21 | IPv4 | 2,048 | HK | |
| 137.189.0.0/17 | IPv4 | 32,768 | HK | |
| 137.189.128.0/18 | IPv4 | 16,384 | HK | |
| 137.189.192.0/22 | IPv4 | 1,024 | HK | |
| 137.189.196.0/24 | IPv4 | 256 | HK | |
| 137.189.197.0/24 | IPv4 | 256 | HK | |
| 137.189.198.0/23 | IPv4 | 512 | HK | |
| 137.189.200.0/21 | IPv4 | 2,048 | HK | |
| 137.189.208.0/20 | IPv4 | 4,096 | HK | |
| 137.189.224.0/19 | IPv4 | 8,192 | HK | |
| 175.159.224.0/22 | IPv4 | 1,024 | HK | |
| 202.40.216.0/24 | IPv4 | 256 | HK | |
| 203.188.64.0/20 | IPv4 | 4,096 | HK | |
| 2001:ce0:3::/48 | IPv6 | — | HK | |
| 2405:3000::/32 | IPv6 | — | HK |