AS3128 University of Wisconsin System
General Info - AS3128
655,616
1.27 Nonillion
IP Address Ranges
| Netblock | From IP | To IP | Number of IPs | |
|---|---|---|---|---|
| 131.210.0.0/16 | 131.210.0.0 | 131.210.255.255 | 65,536 | |
| 137.81.0.0/16 | 137.81.0.0 | 137.81.255.255 | 65,536 | |
| 137.104.0.0/16 | 137.104.0.0 | 137.104.255.255 | 65,536 | |
| 138.49.0.0/17 | 138.49.0.0 | 138.49.127.255 | 32,768 | |
| 138.49.128.0/19 | 138.49.128.0 | 138.49.159.255 | 8,192 | |
| 138.49.160.0/22 | 138.49.160.0 | 138.49.163.255 | 1,024 | |
| 138.49.164.0/22 | 138.49.164.0 | 138.49.167.255 | 1,024 | |
| 138.49.168.0/21 | 138.49.168.0 | 138.49.175.255 | 2,048 | |
| 138.49.176.0/20 | 138.49.176.0 | 138.49.191.255 | 4,096 | |
| 138.49.192.0/18 | 138.49.192.0 | 138.49.255.255 | 16,384 | |
| 139.225.0.0/16 | 139.225.0.0 | 139.225.255.255 | 65,536 | |
| 141.233.0.0/16 | 141.233.0.0 | 141.233.255.255 | 65,536 | |
| 143.200.0.0/16 | 143.200.0.0 | 143.200.255.255 | 65,536 | |
| 143.235.0.0/16 | 143.235.0.0 | 143.235.255.255 | 65,536 | |
| 143.236.0.0/16 | 143.236.0.0 | 143.236.255.255 | 65,536 | |
| 144.13.0.0/16 | 144.13.0.0 | 144.13.255.255 | 65,536 | |
| 192.35.81.0/24 | 192.35.81.0 | 192.35.81.255 | 256 |
| Netblock | From IP | To IP | Number of IPs | |
|---|---|---|---|---|
| 2600:1d00::/28 | 2600:1d00:: | 2600:1d0f:ffff:ffff:ffff:ffff:ffff:ffff | 1.27 Nonillion |
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.
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