1.1.1.1 - No blocks
1.1.1.2 - Malware Blocking Only
1.0.0.2 - Malware Blocking Only
1.1.1.3 - Malware and Adult Content Blocking Together
1.0.0.3 - Malware and Adult Content Blocking Together
9.9.9.9 - Malware Blocking, DNSSEC Validation (this is the most typical configuration)
9.9.9.11 - Secured w/ECS: Malware blocking, DNSSEC Validation, ECS enabled
9.9.9.10 - Unsecured: No Malware blocking, no DNSSEC validation (for experts only!)
8.8.8.8 -
8.8.4.4 -