RPST
208.67.222.222 OpenDNS primary

208.67.220.220 OpenDNS secondary

8.26.56.26 Comodo Secure DNS primary

8.20.247.20 Comodo Secure DNS secondary

9.9.9.9 Quad9 primary

149.112.112.112 Quad9 secondary

64.6.64.6 Verisign DNS primary

64.6.65.6 Verisign DNS secondary