Address space
AS21369 SEMA-UK-AS
IPv4 prefixes
15
8.70K addresses
IPv6 prefixes
0
Most common size
/23
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.
Geography
Where the space lands
| Country | Name | Prefixes |
|---|---|---|
| GB | United Kingdom | 15 |
Inventory
All prefixes
| Prefix | Family | Addresses | Country | Flags |
|---|---|---|---|---|
| 157.203.6.0/23 | IPv4 | 512 | GB | |
| 157.203.36.0/23 | IPv4 | 512 | GB | |
| 157.203.40.0/22 | IPv4 | 1,024 | GB | |
| 157.203.48.0/23 | IPv4 | 512 | GB | |
| 157.203.52.0/23 | IPv4 | 512 | GB | |
| 157.203.56.0/22 | IPv4 | 1,024 | GB | |
| 157.203.60.0/23 | IPv4 | 512 | GB | |
| 157.203.62.0/24 | IPv4 | 256 | GB | |
| 157.203.63.0/24 | IPv4 | 256 | GB | |
| 157.203.92.0/23 | IPv4 | 512 | GB | |
| 157.203.120.0/23 | IPv4 | 512 | GB | |
| 157.203.176.0/22 | IPv4 | 1,024 | GB | |
| 157.203.180.0/23 | IPv4 | 512 | GB | |
| 157.203.242.0/23 | IPv4 | 512 | GB | |
| 157.203.254.0/23 | IPv4 | 512 | GB |