Summary
| Country |
 United States
|
| Domain | cerf.net |
| Size | 1,024 |
| Registry | ARIN |
| Network Name | CERFNET-BLK-5 |
Whois
American Registry for Internet Numbers NET63 (NET-63-0-0-0-0) 63.0.0.0 - 63.255.255.255
CERFnet CERFNET-BLK-5 (NET-63-240-0-0-1) 63.240.0.0 - 63.242.255.255
CIDR IP address subranges within 63.240.240.0/22 subnet
- 63.240.240.0/24
- 63.240.241.0/24
- 63.240.242.0/24
- 63.240.243.0/24