Secure Access DNS Resolvers
Required by applications or devices connecting to the Secure Access DNS resolvers, including Cisco Secure Client deployments with the Umbrella Roaming Security module (DNS-layer security).
IPv4 | IPv6 | Port/Protocol | Description |
---|---|---|---|
208.67.222.222 | 2620:119:35::35 | 53 TCP/UDP | Primary |
208.67.220.220 | 2620:119:53::53 | 53 TCP/UDP | Secondary |
208.67.222.220 | n/a | 53 TCP/UDP | Tertiary |
208.67.220.222 | n/a | 53 TCP/UDP | Quaternary |
208.67.221.76 | 2620:119:17::76 | 53 TCP/UDP | USA only Primary (For more information, see Best Practices.) |
208.67.223.76 | 2620:119:76::76 | 53 TCP/UDP | USA only Secondary (For more information, see Best Practices.) |
208.67.222.64 | 2620.119.53::64 | 53 TCP/UDP | DNS64 Primary (For more information, see Best Practices.) |
208.67.220.64 | 2620:119:53::64 | 53 TCP/UDP | DNS64 Secondary (For more information, see Best Practices.) |
146.112.70.70 | 2a04:e4c0:170::170 | 53 TCP/UDP | Saudi Arabia-Alternate Primary |
146.112.71.71 | 2a04:e4c0:171::171 | 53 TCP/UDP | Saudi Arabia-Alternate Secondary |