Preferred Setting
If your firewall solution accepts Classless Inter-Domain Routing (CIDR) and can support Class 8 C notation please include the following:
CIDR | Starting IP | Ending IP |
208.65.144.0/21 | 208.65.144.0 | 208.65.151.255 |
208.81.64.0/21 | 208.81.64.0 | 208.81.71.255 |
Alternate Setting (1)
If your firewall solution accepts Classless Inter-Domain Routing (CIDR) and only supports Class 1 C notation, you will need to include the following entries to the entire subnet:
CIDR | Starting IP | Ending IP |
208.65.144.0/24 | 208.65.144.0 | 208.65.144.255 |
208.65.145.0/24 | 208.65.145.0 | 208.65.145.255 |
208.65.146.0/24 | 208.65.146.0 | 208.65.146.255 |
208.65.147.0/24 | 208.65.147.0 | 208.65.147.255 |
208.65.148.0/24 | 208.65.148.0 | 208.65.148.255 |
208.65.149.0/24 | 208.65.149.0 | 208.65.149.255 |
208.65.150.0/24 | 208.65.150.0 | 208.65.150.255 |
208.65.151.0/24 | 208.65.151.0 | 208.65.151.255 |
208.81.64.0/24 | 208.81.64.0 | 208.81.64.255 |
208.81.65.0/24 | 208.81.65.0 | 208.81.65.255 |
208.81.66.0/24 | 208.81.66.0 | 208.81.66.255 |
208.81.67.0/24 | 208.81.67.0 | 208.81.67.255 |
208,81.68.0/24 208.81.68.0 208.81.68.255
208.81.69.0/24 208.81.69.0 208.81.69.255
208.81.70.0/24 208.81.70.0 208.81.70.255
208.81.71.0/24 208.81.71.0 208.81.71.255
Alternate Setting (2)
If your firewall solution does not accept Classless Inter-Domain Routing (CIDR) notation, you will need to include the starting and ending IP address for either the Class 8 C addresses or the Class 1C addresses which are included above.
For the 208.65.144.0/21 range, use the following:
Netmask = 255.255.248.0. HostMin = 208.65.144.1 HostMax = 208.65.151.254
For the 208.81.64.0/21 range, use the following:
Netmask = 255.255.248.0. HostMin = 208.81.64.1 HostMax = 208.81.71.254
