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Which is more popular?
Based on our record, Quad9
seems to be more popular. It has been mentioned
50 times
since March 2021.
social mentions
50 vs 0
Security & Privacy popularity
100% vs 0%
Base details
Website, pricing, platforms and company facts side by side.
Privacy-Focused Quad9 does not store any personal data about users and maintains a stringent privacy policy, ensuring that your DNS queries are not tracked or sold to third parties.
Security Quad9 provides robust security features by blocking access to known malicious domains, which helps protect users from phishing, malware, and other online threats.
Performance With a global network of servers, Quad9 offers fast DNS resolution, which can contribute to quicker website load times and improved overall internet browsing experience.
Easy to Set Up Changing your DNS to Quad9 is straightforward and can be easily configured on most devices without requiring technical expertise.
Free Service Quad9 offers its DNS services free of charge, making it an accessible option for anyone looking to improve their online privacy and security without additional costs.
Possible disadvantages
Limited Customization Quad9 does not offer as many customization options as some competing services, which may be a drawback for advanced users looking for more control over their DNS settings.
Possible Geolocation Issues Using a global DNS resolver like Quad9 can sometimes lead to geolocation issues, where content or services are delivered based on server location rather than user location.
Not as Established Quad9 is a relatively new entrant in the DNS space compared to longstanding providers like Google Public DNS and OpenDNS, which might make some users hesitant.
Dependency on Upstream Filters Quad9's security filtering relies on upstream threat intelligence providers. Therefore, the comprehensiveness of the protection is dependent on the accuracy and timeliness of these third-party sources.
Enhanced Server Stability CloudLinux uses its lightweight virtualization technology (LVE) to isolate each tenant on a shared hosting server, preventing any single user from consuming excessive resources and crashing the server for everyone else. This ensures consistent uptime and performance.
Improved Security with HardenedPHP and KernelCare CloudLinux offers HardenedPHP, which patches old and unsupported PHP versions against known vulnerabilities, and KernelCare, which provides live kernel patching without requiring server reboots. These features significantly enhance server security posture.
Resource Limit Management Administrators can set granular resource limits (CPU, memory, I/O, number of processes, etc.) per user account using LVE Manager. This makes it easy to manage shared hosting environments and ensure fair resource distribution among tenants.
CageFS File System Virtualization CageFS creates a virtualized file system for each user, preventing them from seeing other users on the server, viewing sensitive configuration files, or exploiting server vulnerabilities. This adds an important layer of isolation and security.
Wide Compatibility with Hosting Panels CloudLinux integrates seamlessly with popular hosting control panels such as cPanel, Plesk, and DirectAdmin, making it straightforward for hosting providers to adopt without overhauling their existing infrastructure or workflows.
Possible disadvantages
Additional Licensing Cost CloudLinux requires a paid monthly or annual license on top of the base server cost. For smaller hosting providers or individual server owners, this additional expense can add up and may not always be justifiable compared to free alternatives.
Limited to CentOS/RHEL-Based Systems CloudLinux is built on top of RHEL/CentOS and does not support other Linux distributions like Ubuntu or Debian. This limits its adoption for hosting providers who prefer or already run non-RHEL-based environments.
Learning Curve for Configuration While CloudLinux provides powerful resource management tools, properly configuring LVE limits, CageFS, PHP Selector, and other features requires a solid understanding of the platform. Misconfiguration can lead to users being unnecessarily restricted or resources being poorly allocated.
Potential Performance Overhead The additional layers of virtualization, resource monitoring, and file system isolation introduced by CloudLinux can impose a slight performance overhead on the server compared to running a bare, unmodified Linux distribution without these controls.
Dependency on CloudLinux Ecosystem Adopting CloudLinux means relying on their ecosystem for kernel updates, PHP patches, and security fixes. If the company experiences delays in releasing patches or changes its pricing/licensing model, hosting providers may find themselves locked into a dependency that is difficult to migrate away from.
Analysis
An editorial look at what each product does well and who it suits.
Quad9CloudLinux
Overall verdict
Yes, Quad9 is generally considered a good DNS service.
Why this product is good
Quad9 offers a DNS service that prioritizes security, privacy, and performance. It blocks known malicious domains using threat intelligence from multiple sources, enhancing cybersecurity for its users. Additionally, Quad9 respects user privacy by not logging or selling personal data.
Recommended for
Individuals and organizations seeking enhanced security against phishing and malware.
Users concerned about privacy and looking for a DNS provider that respects these values.
Anyone needing a reliable and fast DNS resolver for their internet activities.
IT administrators interested in a robust, secure DNS solution for networks.
Overall verdict
CloudLinux is a well-regarded, mature Linux OS distribution and toolset specifically designed for shared hosting and multi-tenant server environments, offering strong isolation, resource management, and security features that make it a solid choice for hosting providers.
Why this product is good
Provides LVE (Lightweight Virtual Environment) technology for per-tenant resource isolation, preventing 'bad neighbor' effects on shared servers
Enhances server stability and security by isolating users so that one account's issues (crashes, resource spikes) don't affect others
Offers extended lifecycle support (longer than standard CentOS/RHEL support windows), which is valuable for legacy systems
Includes tools like CloudLinux OS Shield, Imunify360 integration, and hardened kernel options for improved security
Compatible with popular control panels like cPanel and Plesk, making it easy to integrate into existing hosting stacks
Backed by an established company with a long track record in the hosting industry and responsive support
Offers granular control over CPU, memory, I/O, and other resources per user account
Provides PHP Selector and multiple PHP version support, useful for hosting providers serving diverse client needs
Recommended for
Web hosting companies running shared or reseller hosting environments
Hosting providers needing to isolate customer accounts on the same physical server
Businesses requiring extended OS support lifecycles beyond standard RHEL/CentOS EOL dates
Enterprises using cPanel or Plesk that want tighter security and resource control
Hosting companies looking to reduce support tickets caused by noisy-neighbor resource contention
IT teams managing multi-tenant infrastructure who need governance and monitoring tools built into the OS layer
The company sells itself on its ability to block malicious domains by collecting intelligence from 'a variety of public and private sources.' It's not clear what these sources are, but the website says Quad9 used 18+...
As the name Quad9 suggests, their primary DNS is 9.9.9.9. Quad9’s DNS is fairly easy to remember as the name indicates. Quad9 focuses on security, performance, privacy, and speed. Though it may not be the fastest DNS,...
Quad9 emphasizes security, privacy and performance — the company was founded on the goal to make the internet safer for everyone. It blocks malicious domains, phishing and malware while maintaining your anonymity....
Recommendations tracked on public social media and blogs since March 2021.
Quad950 mentionsCloudLinux0 mentions
Quad9 (DNS Resolver) to Exit France
Https://quad9.net/ lists as being founded by Global Cyber Alliance, which was founded by City of London police, Manhattan District Attorney’s Office and Center for Internet Security. Quad9 openly operate in threat intelligence:...
- Source: Hacker News
/
13 days ago
The Great DNS Trail
So assuming the answer to a query of what something like dev.to is mainly starts at the locally designated DNS servers. This will most likely be your ISP but it's not uncommon to utilize public DNS servers such as Quad9, Google, and...
- Source: dev.to
/
6 months ago
Maybe consider using https://quad9.net for DNS? It's nice having archive.today work. Otherwise you can always copy/paste the link to TFA into https://archive.org.
- Source: Hacker News
/
over 2 years ago
Soon you'll be able to create your own private DNS server that will protect your personal data, block ads and trackers, and allow you to control access to specific Internet content.
An organization of hobbyists who run an alternative DNS network, also provides access to domains not administered by ICANN. People also askWhat is OpenNIC?Which is the fastest DNS server?What is DNS by Comodo?
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