The current DNS server addresses for Sisqtel.net are:

Primary DNS Server- 137.119.78.254 

Secondary DNS Server - 137.118.1.32

Tertiary DNS Server - 137.118.1.33

As of October 28, 2016, the previous DNS server address, 208.19.107.240, will no longer be accessible. If your router is configured with a static DNS server address, this may cause a disruption in service. You can verify your current DNS server via the free, online tool at: www.ipleak.net