AS21730 Halstad Telephone Company
General Info - AS21730
12,288
9,223,372,036,854,775,808
IP Address Ranges
| Netblock | Number of IPs | |
|---|---|---|
| 65.61.64.0/19 | 8,192 | |
| 199.199.224.0/21 | 2,048 | |
| 204.73.192.0/21 | 2,048 |
| Netblock | Number of IPs | |
|---|---|---|
| 2606:4500::/32 | 79,228,162,514,264,337,593,543,950,336 |
Upstreams
Downstreams
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.
