Address space
AS18183 NCREE National Center for Research on Earthquake Engineering
IPv4 prefixes
7
5.63K addresses
IPv6 prefixes
9
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 |
|---|---|---|
| TW | Taiwan, Province of China | 16 |
Inventory
All prefixes
| Prefix | Family | Addresses | Country | Flags |
|---|---|---|---|---|
| 61.56.0.0/22 | IPv4 | 1,024 | TW | |
| 61.56.4.0/24 | IPv4 | 256 | TW | |
| 61.56.5.0/24 | IPv4 | 256 | TW | |
| 61.56.6.0/23 | IPv4 | 512 | TW | |
| 61.56.8.0/21 | IPv4 | 2,048 | TW | |
| 103.189.132.0/23 | IPv4 | 512 | TW | |
| 202.5.12.0/22 | IPv4 | 1,024 | TW | |
| 2001:4500::/36 | IPv6 | — | TW | |
| 2001:4500:1000::/39 | IPv6 | — | TW | |
| 2001:4500:1200::/39 | IPv6 | — | TW | |
| 2001:4500:1400::/38 | IPv6 | — | TW | |
| 2001:4500:1800::/37 | IPv6 | — | TW | |
| 2001:4500:2000::/35 | IPv6 | — | TW | |
| 2001:4500:4000::/34 | IPv6 | — | TW | |
| 2001:4500:8000::/33 | IPv6 | — | TW | |
| 2400:85a0::/32 | IPv6 | — | TW |