What are the key differences between Quad9 DNS and OpenDNS Resolver (Cisco)?

Compare Quad9 DNS and OpenDNS Resolver (Cisco) side by side on Lunoo to see detailed feature differences, AI scores, and expert analysis.

How are Quad9 DNS and OpenDNS Resolver (Cisco) scored?

Quad9 DNS has an AI score of 9.2/10 and OpenDNS Resolver (Cisco) has an AI score of 7.5/10. Scores are based on category fit, feature coverage, pricing signals, public reception, and recency.

Quad9 DNS vs OpenDNS Resolver (Cisco) 2026 - Compared

Quad9 DNS

OpenDNS Resolver (Cisco)

WINNER Quad9 DNS

Quad9 DNS edges ahead with a score of 9.2/10 compared to 7.5/10 for OpenDNS Resolver (Cisco). While both are highly rate...

emoji_events WINNER

Quad9 DNS

8.51 Great

DNS Provider Get Quad9 DNS open_in_new

Quad9 DNS edges ahead with a score of 9.2/10 compared to 7.5/10 for OpenDNS Resolver (Cisco). While both are highly rated in their respective fields, Quad9 DNS demonstrates a slight advantage in our AI ranking criteria. A detailed AI-powered analysis is being prepared for this comparison.

emoji_events Winner: Quad9 DNS

verified Confidence: Low

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description Overview

Quad9 DNS

Quad9 is a highly respected DNS service focused heavily on security, specifically blocking known command-and-control servers and malware domains. It operates on a principle of proactive threat intelligence, making it a top choice for users prioritizing malware protection above all else. Its commitment to security standards and rapid list updates ensures that users are protected against emerging th...

OpenDNS Resolver (Cisco)

As a long-established player, OpenDNS (Cisco) remains a highly reliable choice, especially for corporate environments that require predictable, managed filtering policies. It is known for its straightforward implementation into existing network security hardware. While newer, more customizable options exist, its reputation for stable, managed network-level filtering keeps it relevant for many esta...