Best Free DNS Monitoring Tools of 2025

ClouDNS provides a range of DNS hosting services, offering both free and premium options to meet various needs. Services include dynamic DNS, DDoS protection, GeoDNS, and advanced features like DNS Failover, DNSSEC, and Anycast DNS for faster and more reliable performance. The platform features a robust global network with a 10,000% uptime guarantee, ensuring consistent domain availability. Custom DNS solutions are available for hosting companies, along with SSL certificates and domain management tools.

Site24x7 provides unified cloud monitoring to support IT operations and DevOps within small and large organizations. The solution monitors real users' experiences on websites and apps from both desktop and mobile devices. DevOps teams can monitor and troubleshoot applications and servers, as well as network infrastructure, including private clouds and public clouds, with in-depth monitoring capabilities. Monitoring the end-user experience is done from more 100 locations around the globe and via various wireless carriers.

Control D is a customizable DNS filtering and traffic redirection platform that leverages Secure DNS protocols like DNS-over-HTTPS, DNS-over-TLS and DNS-over-QUIC, with support for Legacy DNS. With Control D you can: block malicious threats, block unwanted types of content network wide (ads & trackers, IoT telemetry, adult content, socials, and more), redirect traffic using transparent proxies and gain visibility on network events and usage patterns, with client level granularity. Think of it as your personal Authoritative DNS resolver for the entire Internet that gives you granular control over what domains get resolved, redirected or blocked.

Uptrends is all about cloud-based website performance that keeps track of performance, uptime, and functionality of your websites and APIs. The 24/7 monitoring service that proactively test your website and monitor multi-step transactions. Let’s face it—the Internet is a fragile thing. Stuff breaks or slows every now and then. Uptrends lets you know when it does and what exactly happened. Feel free to try Uptrends for 30 days with our free trial!

ManageEngine Applications Manager is an enterprise-ready tool built to monitor a company's complete application ecosystem. Our platform enables IT and DevOps teams to have access to all of their application stack's dependent components. Monitoring the performance of mission-critical online applications, web servers, databases, cloud services, middleware, ERP systems, communications components, and other systems is simplified with Applications Manager. It contains a range of capabilities that help to expedite the troubleshooting process and minimize MTTR. It's a great tool to resolve performance issues before they harm application end users. Applications Manager has a fully functional dashboard that can be customized to provide quick performance information. By setting alerts, the monitoring tool continually monitors the application stack for performance issues and notifies the appropriate staff without delay. Applications Manager helps transform performance data into meaningful insights by combining this with advanced machine learning.

Paessler PRTG is an all-inclusive monitoring solution with an intuitive, user-friendly interface powered by a cutting-edge monitoring engine. It optimizes connections and workloads, reduces operational costs, and prevents outages. It also saves time and controls service level agreements (SLAs). This solution includes specialized monitoring features such as flexible alerting, cluster failover, distributed monitoring, maps, dashboards, and in-depth reporting.

Cloudflare is the foundation of your infrastructure, applications, teams, and software. Cloudflare protects and ensures the reliability and security of your external-facing resources like websites, APIs, applications, and other web services. It protects your internal resources, such as behind-the firewall applications, teams, devices, and devices. It is also your platform to develop globally scalable applications. Your website, APIs, applications, and other channels are key to doing business with customers and suppliers. It is essential that these resources are reliable, secure, and performant as the world shifts online. Cloudflare for Infrastructure provides a complete solution that enables this for everything connected to the Internet. Your internal teams can rely on behind-the-firewall apps and devices to support their work. Remote work is increasing rapidly and is putting a strain on many organizations' VPNs and other hardware solutions.

Better Stack brings all your observability needs under one roof to help you build and ship more reliable software, faster. Handle on-call scheduling, get clear, actionable alerts, and resolve issues quickly – all from a single tool that covers incident response, uptime checks, status pages, log management, and infrastructure monitoring. Designed to scale with your team, Better Stack unifies your alerting and monitoring workflows into a clean, powerful interface that boosts visibility and shortens response times. Key capabilities include an OpenTelemetry-native Kubernetes collector powered by eBPF, instant alerting, and dashboards built for collaboration. Powered by ClickHouse, Better Stack enables rapid-fire queries and seamless ingestion of massive, high-cardinality datasets. It turns your logs into structured, searchable data, giving you the ability to query everything using SQL – just like a single, unified database. With 100+ integrations, it fits right into your existing workflow, no extra effort needed.

Splunk AppDynamics is a comprehensive observability and security platform designed to optimize hybrid and on-prem applications. Unlike siloed monitoring tools, it connects application performance to measurable business outcomes such as revenue, conversions, and operational efficiency. The solution empowers teams to track critical business transactions like logins, shopping cart activity, and order processing, providing real-time visibility into bottlenecks. With AI-powered anomaly detection and root cause analysis, it ensures that performance issues are identified quickly and accurately. AppDynamics extends beyond performance monitoring by securing applications at runtime, blocking threats, and exposing vulnerabilities before they escalate. Its specialized support for SAP environments enables rapid issue detection, tracing down to ABAP code or database queries. Digital Experience Monitoring adds a customer-focused lens, offering web, mobile, and synthetic insights into user journeys. By combining business performance analytics, runtime security, and full-stack observability, Splunk AppDynamics helps organizations maximize reliability and deliver superior digital experiences.

PerfOps is an all-encompassing platform for infrastructure monitoring and analytics, designed to help organizations assess and enhance the efficiency of their CDN and DNS service providers. It presents a variety of tools, such as in-depth analytics that deliver insights into performance and uptime, along with continuous monitoring via Real User Monitoring (RUM) that evaluates services based on real user experiences. Additionally, it facilitates on-demand network tests through a worldwide network of servers, allowing users to execute commands like traceroute and curl efficiently. Users can access detailed raw logs for thorough analysis, set up customizable alerts to inform them of any performance issues, and create scheduled white-label PDF reports for distributing insights among team members. PerfOps also enables custom private monitoring, permitting users to incorporate their own HTTP or DNS endpoints for internal examinations, and provides a powerful API for developing tailored tools. With its intuitive interface, the platform makes it easy to visualize performance metrics, ensuring that even less technical users can grasp the data effectively. This combination of features positions PerfOps as a vital resource for organizations striving to maintain optimal performance across their digital services.

Zabbix stands out as a premier enterprise-level tool created for the real-time observation of vast amounts of metrics gathered from numerous servers, virtual machines, and network devices. As an Open Source platform, Zabbix offers its powerful features at no cost. It automatically identifies problematic states within the incoming flow of metrics, eliminating the need for continuous manual monitoring. The built-in web interface allows for various visual presentations of your IT landscape, enhancing usability. With Zabbix's Event correlation mechanism, you can reduce the influx of repetitive notifications and concentrate on identifying the root causes of issues. It facilitates automated monitoring for large, dynamic environments and supports the development of a distributed monitoring system while maintaining centralized oversight. Furthermore, Zabbix can seamlessly integrate with all components of your IT infrastructure, and users can access its comprehensive functionalities from external applications via the Zabbix API. This integration capability ensures that Zabbix remains adaptable to a variety of operational needs.

StatusCake.com provides website owners with a free website monitoring service that alerts them when their website is experiencing downtime or other problems. StatusCake Premium plans allow you to monitor multiple websites (300 on the Business plan), and also allow you to choose the location where your website will be tested for uptime. Additional features include page speed testing, domain monitoring and server monitoring, SSL monitoring, and virus/malware scanning.

Cisco ThousandEyes is an innovative platform for network intelligence that equips organizations with profound insights into digital interactions across various environments, including the internet, cloud, and enterprise networks. Utilizing sophisticated monitoring and analytics capabilities, ThousandEyes enables businesses to identify, troubleshoot, and rectify performance challenges that affect essential applications, websites, and services. Its extensive array of tools delivers valuable information regarding network performance, application delivery, and user engagement, allowing organizations to maintain uninterrupted connectivity and enhance user experiences. This platform is widely embraced by Fortune 500 companies and SaaS providers alike, establishing itself as a reliable solution for navigating the intricacies of contemporary hybrid and multi-cloud landscapes. Additionally, ThousandEyes empowers IT teams by equipping them with the tools needed to proactively manage, optimize, and refine their digital infrastructures for improved operational efficiency.

Monitors all mission-critical infrastructure components, including services, applications, operating systems, network protocols and metrics, as well as network infrastructure. There are hundreds of third-party add-ons that allow for the monitoring of virtually all of your in-house services and applications. This dashboard provides a central view of all IT operations and business processes. The dashboards are a powerful way to quickly access third-party data and monitoring information at a glance. Views allow users to quickly access the most relevant information. Organizations can plan for infrastructure upgrades with automated, integrated trending graphs and capacity planning graphs before they are caught by surprise by outdated systems. IT staff, business stakeholders and end-users receive alerts via email or text message. They provide outage details so that they can resolve issues immediately.

Simplifying DNS checks. With DNS Check, you can effortlessly monitor, share, and troubleshoot your DNS records. You can keep an eye on DNS records and name servers for any alterations or lookup failures, receiving notifications whenever a change occurs. You have the option to import your complete zone file or selectively monitor only the records that matter most. For sharing purposes, you can request updates on DNS records by providing a link that indicates which records are accurate and which are not, with alerts for any detected updates. Troubleshooting DNS issues is a breeze; if something malfunctions, our DNS checker will help you determine if a DNS problem exists and guide you on what needs fixing. Central to DNS Check is the DNS record checking tool that evaluates the DNS records you input against the responses from DNS servers. If a problem arises, this tool allows for quick identification of issues, including unresponsive name servers and incorrect IP addresses being returned. Additionally, our service aims not only to identify issues but also to empower users with knowledge on how to effectively resolve them.

This infrastructure features a fully cloud-based, load-balanced, and geo-distributed Anycast DNS system, ensuring high availability and operational efficiency across more than 25 countries. Web security is provided at the DNS layer, serving as the first line of defense for all internet-connected devices. It effectively blocks various threats, including phishing attempts, malware domains, harmful sites, botnets, command-and-control callback events, spyware, drive-by-downloads, XSS-injected pages, cookie theft, anonymizers, TOR activity, encrypted files, and all forms of web-borne attacks. This comprehensive solution safeguards, regulates, and monitors users' web traffic, regardless of their internet connection point, whether by company, location, endpoint, mobile device, IP address, subnet, or user identity. Users can customize the experience by adding their own logo, displaying different pages for each category, or modifying messages to align with their specific requirements. Gain real-time visibility of all internet-connected activities and set up scheduled reports to be delivered directly to your inbox. Additionally, it provides seamless protection for mobile devices across various cellular networks, including 2G, 3G, 4G, and LTE, as well as Wi-Fi connections. With this robust security framework, organizations can better manage their online presence and respond swiftly to emerging threats.