| Prefix | Company | Number of IPs |
|---|---|---|
| 64.189.15.0/24 | Apogee Telecom Inc. | 256 |
| 140.104.0.0/16 | Carroll College | 65,536 |
| 140.189.0.0/16 | WiscNet | 65,536 |
| 143.109.64.0/19 | Ripon College | 8,192 |
| 143.109.192.0/19 | Ripon College | 8,192 |
| 144.89.0.0/18 | Board of Trustees of Beloit College | 16,384 |
| 148.59.44.0/24 | School District of Janesville | 256 |
| 160.32.0.0/22 | Chippewa Valley Technical College | 1,024 |
| 165.128.0.0/16 | Western Technical College | 65,536 |
| 170.125.0.0/16 | Dane County | 65,536 |
| 170.125.238.0/23 | Dane County | 512 |
| 192.156.230.0/24 | City of New Berlin | 256 |
| 192.206.48.0/24 | Milwaukee Public Museum | 256 |
| 198.150.0.0/16 | WiscNet | 65,536 |
| 199.197.64.0/18 | Madison Metropolitan School District | 16,384 |
| 199.233.44.0/23 | Rock County Information Technology Department | 512 |
| 199.233.44.0/24 | Rock County Information Technology Department | 256 |
| 199.233.45.0/24 | Rock County Information Technology Department | 256 |
| 199.233.84.0/24 | Milwaukee County Federated Library System | 256 |
| 199.233.86.0/24 | Milwaukee County Federated Library System | 256 |
| 199.233.142.0/24 | Milwaukee County Federated Library System | 256 |
| 199.242.176.0/24 | Winnefox Library System | 256 |
| 199.248.186.0/24 | City of Oshkosh | 256 |
| 204.128.233.0/24 | Milwaukee County Federated Library System | 256 |
| 204.128.234.0/24 | Milwaukee County Federated Library System | 256 |
| 204.128.235.0/24 | Milwaukee County Federated Library System | 256 |
| 204.128.236.0/24 | Milwaukee County Federated Library System | 256 |
| 204.128.237.0/24 | Milwaukee County Federated Library System | 256 |
| 204.128.238.0/24 | Milwaukee County Federated Library System | 256 |
| 204.128.240.0/24 | Milwaukee County Federated Library System | 256 |
| 204.128.241.0/24 | Milwaukee County Federated Library System | 256 |
| 204.128.242.0/24 | Milwaukee County Federated Library System | 256 |
| 204.145.232.0/24 | La Crosse Public Library | 256 |
| 205.213.0.0/16 | WiscNet | 65,536 |
| 208.85.28.0/22 | City of La Crosse | 1,024 |
| 216.56.0.0/16 | WiscNet | 65,536 |
| 216.56.252.0/23 | WiscNet | 512 |
| 2001:4e0::/32 | WiscNet | 7.92 × 1028 |
| 2620:11f:f000::/40 | Northeast Wisconsin Technical College | 3.09 × 1026 |
IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.
AS2381 peers with these other Autonomous Systems.
Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.
AS2381 provides internet connectivity to these downstream Autonomous Systems.
A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.
Discover your public IP address and detailed information about your connection.
Convert CIDR notation to IP address ranges and vice versa. Useful for network configuration and security.
Perform a reverse DNS (rDNS) lookup to get the hostname for an IP address.
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