AS13205 British Telecommunications Plc
General Info - AS13205
27,136
0
IP Address Ranges
| Netblock | Number of IPs | |
|---|---|---|
| 31.11.56.0/23 | 512 | |
| 31.11.58.0/23 | 512 | |
| 31.11.60.0/22 | 1,024 | |
| 78.109.0.0/24 | 256 | |
| 78.109.1.0/24 | 256 | |
| 78.109.2.0/23 | 512 | |
| 78.109.4.0/24 | 256 | |
| 78.109.5.0/24 | 256 | |
| 78.109.6.0/24 | 256 | |
| 78.109.7.0/24 | 256 | |
| 78.109.8.0/24 | 256 | |
| 78.109.9.0/24 | 256 | |
| 78.109.10.0/24 | 256 | |
| 78.109.11.0/24 | 256 | |
| 78.109.12.0/22 | 1,024 | |
| 137.213.239.0/24 | 256 | |
| 137.213.252.0/23 | 512 | |
| 193.35.182.0/23 | 512 | |
| 193.35.184.0/21 | 2,048 | |
| 193.35.192.0/22 | 1,024 | |
| 193.35.196.0/24 | 256 | |
| 217.140.0.0/21 | 2,048 | |
| 217.140.8.0/22 | 1,024 | |
| 217.140.12.0/24 | 256 | |
| 217.140.13.0/24 | 256 | |
| 217.140.14.0/23 | 512 | |
| 217.140.16.0/20 | 4,096 | |
| 217.140.32.0/19 | 8,192 |
There are no known IPv6 addresses belonging to this network.
Downstreams
There are no downstreams for this ASN.
What is an Autonomous System (AS)?
An Autonomous System (AS) is a collection of connected networks that operate under a common administrative domain and share routing policies. Each AS is identified by a unique Autonomous System Number (ASN), which is used to exchange routing information with other ASs. AS can control how traffic flows through networks and then filter out unwanted traffic.
