Secure DNS

DNS server Cisco Umbrella (OpenDNS), according to the manufacturer, prevents malware from working, blocks interaction with C&C servers, and phishing. Nearest mirror in Frankfurt:

• 208.67.222.222
• 208.67.220.220
• 2620:119:35::35
• 2620:119:53::53

Analogs:

Yandex:

• 77.88.8.88
• 77.88.8.2

Quad9 (IBM X-Force): 

• 9.9.9.9
• 149.112.112.112
• 2620:fe::fe
• 2620:fe::9