| Prefix | Company | Number of IPs |
|---|---|---|
| 72.19.64.0/18 | University of Massachusetts - AMHERST | 16,384 |
| 128.119.0.0/16 | University of Massachusetts - AMHERST | 65,536 |
| 192.80.83.0/24 | University of Massachusetts - AMHERST | 256 |
| 192.189.138.0/24 | University of Massachusetts - AMHERST | 256 |
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.
AS1249 has no peers recorded.
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.
AS1249 uses these Autonomous Systems as its upstreams.
An upstream (or transit provider) is another AS that AS1249 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.
AS1249 has no downstreams recorded.
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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