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Summary
| Country |
 United States
|
| Domain | cogentco.com |
| Size | 4,096 |
| Registry | ARIN |
| Network Name | RCN |
Whois
American Registry for Internet Numbers NET204 (NET-204-0-0-0-0) 204.0.0.0 - 204.255.255.255
Cogent Communications, LLC COGENT-204-240-14 (NET-204-240-0-0-1) 204.240.0.0 - 204.243.255.255
Rackdog, LLC NORTHERN-FIBER (NET-204-242-0-0-1) 204.242.0.0 - 204.242.255.255
NORTHERN CABLE AND FIBER, LLC NORTHERN (NET-204-242-0-0-2) 204.242.0.0 - 204.242.255.255
RCN RCN (NET-204-242-0-0-3) 204.242.0.0 - 204.242.255.255CIDR IP address subranges within 204.242.128.0/20 subnet
- 204.242.128.0/24
- 204.242.129.0/24
- 204.242.130.0/24
- 204.242.131.0/24
- 204.242.132.0/24
- 204.242.133.0/24
- 204.242.134.0/24
- 204.242.135.0/24
- 204.242.136.0/24
- 204.242.137.0/24
- 204.242.138.0/24
- 204.242.139.0/24
- 204.242.140.0/24
- 204.242.141.0/24
- 204.242.142.0/24
- 204.242.143.0/24