Best Free DNS Monitoring Tools

ManageEngine Site24x7 is a comprehensive observability and monitoring solution designed to help organizations effectively manage their IT environments. It offers monitoring for back-end IT infrastructure deployed on-premises, in the cloud, in containers, and on virtual machines. It ensures a superior digital experience for end users by tracking application performance and providing synthetic and real user insights. It also analyzes network performance, traffic flow, and configuration changes, troubleshoots application and server performance issues through log analysis, offers custom plugins for the entire tech stack, and evaluates real user usage. Whether you're an MSP or a business aiming to elevate performance, Site24x7 provides enhanced visibility, optimization of hybrid workloads, and proactive monitoring to preemptively identify workflow issues using AI-powered insights. Monitoring the end-user experience is done from more than 130 locations worldwide.

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. - Block malicious threats - Block unwanted types of content network wide (ads & trackers, IoT telemetry, adult content, socials, and more) - Deploy in minutes on fleets of devices using RMM - Manage clients using sub-organizations - Gain visibility on network events and usage patterns, with client level granularity - Re-route traffic via proxies (through DNS) for improved privacy and security - Enjoy superior UX and simplicity 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.

Cloudflare is the foundation for your infrastructure, applications, and teams. Cloudflare secures and ensures the reliability of your external-facing resources such as websites, APIs, and applications. It protects your internal resources such as behind-the-firewall applications, teams, and devices. And it is your platform for developing globally scalable applications. Your website, APIs, and applications are your key channels for doing business with your customers and suppliers. As more and more shift online, ensuring these resources are secure, performant and reliable is a business imperative. Cloudflare for Infrastructure is a complete solution to enable this for anything connected to the Internet. Behind-the-firewall applications and devices are foundational to the work of your internal teams. The recent surge in remote work is testing the limits of many organizations’ VPN and other hardware solutions.

ManageEngine Applications Manager is an enterprise-ready platform designed to monitor an entire application ecosystem of a business organization. Our platform helps IT and DevOps teams get visibility into all the dependent components within their application stack. With Applications Manager, it becomes easier to monitor the performance of mission-critical web applications, web servers, databases, cloud services, middleware, ERP systems, messaging components, and more. It has tons of features that fast-track the troubleshooting process and help reduce MTTR. This way, issues are fixed before application end-users are affected. Applications Manager has a fully functional dashboard that can be customized to get performance insights at a glance. By configuring alerts, it constantly keeps a lookout for performance issues within the application stack. Combining this with intelligent machine learning, Applications Manager helps turn performance data into actionable insights.

ClouDNS is a leading global provider of managed DNS services, trusted by businesses of all sizes for its speed, security, and reliability. Powered by a high-performance Anycast DNS network with 60+ Points of Presence across 6 continents, it ensures lightning-fast domain resolution, instant global synchronization, and up to 1000% SLA uptime guarantees. ClouDNS offers a full suite of DNS and domain solutions, including Free DNS, Premium DNS, DDoS Protected DNS, GeoDNS, Domain Registration, SSL Certificates, Real-Time Monitoring, and Google Workspace integration. As an ISO 27001-certified and ICANN-accredited provider, ClouDNS meets the highest standards for security and compliance. Its infrastructure is built to resist DDoS attacks, support DNSSEC, and provide enterprise-grade reliability. All services are backed by 24/7 live chat support, with real DNS experts ready to assist in under 60 seconds.

Paessler PRTG is an all-inclusive monitoring software solution developed by Paessler. Equipped with an easy-to-use, intuitive interface with a cutting-edge monitoring engine, PRTG optimizes connections and workloads as well as reduces operational costs by avoiding outages while saving time and controlling service level agreements (SLAs). The solution is packed with specialized monitoring features that include flexible alerting, cluster failover solution, distributed monitoring, in-depth reporting, maps and dashboards, and more. PRTG monitors your entire IT infrastructure. All important technologies are supported: • SNMP: ready-to-use and custom options • WMI and Windows Performance Counters • SSH: for Linux/Unix and macOS systems • Traffic analysis using flow protocols or packet sniffing • HTTP requests • REST APIs returning XML or JSON • Ping, SQL, and many more

Better Stack is an eBPF-based, AI SRE observability tool that helps you ship better software, faster. Schedule on-call rotations, receive actionable alerts, and resolve incidents with ease. Better Stack brings together incident management, uptime monitoring, status pages, log management, and infrastructure monitoring – all in one place. Built for speed and scale, it combines multiple monitoring and alerting workflows into a single, powerful interface that boosts visibility and slashes response times. Key features include an OpenTelemetry-native Kubernetes collector powered by eBPF, real-time alerting, and collaborative dashboards. Under the hood, Better Stack runs on ClickHouse, enabling lightning-fast queries and scalable ingestion across high-cardinality datasets. You can visualize your entire stack, turn all your logs into structured data, and query everything with SQL – as if it were a single database. Seamlessly integrates into your workflow with 100+ integrations.

ITRS Uptrends helps organizations achieve 24x7 reliability and performance for web services (websites, SaaS, APIs), so mission-critical transactions work from anywhere, anytime. ITRS Uptrends’ intuitive no-code/low-code transaction recorder simplifies the monitoring setup, driving rapid time-to-value even across multi-vendor/domain business services. We continuously monitor multistep user journeys from 368 nodes in 67 countries to provide full visibility beyond uptime. Alongside synthetic monitoring, our real user monitoring captures service usage and adoption to show IT's business impact. Integrating with our real-time observability portfolio, ITRS Uptrends offers end-to-end visibility of business services across hybrid infrastructures. As a SaaS solution, ITRS Uptrends is deployment-free unless private checkpoints are required to monitor from within a corporate network.

Splunk AppDynamics delivers full-stack observability for hybrid and on-prem environments, linking technical performance directly to business outcomes. It enables teams to detect anomalies, diagnose root causes, and prioritize issues based on their real business impact. With capabilities ranging from network performance correlation to SAP system optimization, the platform offers deep insights across applications, APIs, and infrastructure. Its runtime security features safeguard applications by detecting vulnerabilities, blocking attacks, and highlighting potential risks. AppDynamics also enhances digital experiences with web, mobile, and synthetic monitoring to understand user journeys. By unifying performance, security, and business analytics, Splunk AppDynamics helps enterprises reduce costs, prevent outages, and deliver seamless customer experiences.

Zabbix is the ultimate enterprise-level software designed for real-time monitoring of millions of metrics collected from tens of thousands of servers, virtual machines and network devices. Zabbix is Open Source and comes at no cost. Detect problem states within the incoming metric flow automatically. No need to peer at incoming metrics continuously. The native web interface provides multiple ways of presenting a visual overview of your IT environment. Save yourself from thousands of repetitive notifications and focus on root causes of a problem with Zabbix Event correlation mechanism. Automate monitoring of large, dynamic environments.Build distributed monitoring solution while keeping centralized control. Integrate Zabbix with any part of your IT environment. Get access to all Zabbix functionality from external applications through Zabbix API.

StatusCake.com is a free website monitoring service ensuring that website owners are alerted the moment their website goes down or is experiencing problems. StatusCake premium plans allow multiple websites to be monitored (300 on the Business plan), as well as selecting the global location from where uptime is tested from. Additional features include page-speed testing, domain monitoring, server monitoring, SSL monitoring, as well as virus and malware scanning. We'll keep an eye on your website performance for you in the background. Website downtime happens. We'll send you a notification letting you know when it does. Sit back. Relax. Focus on your business. Let us worry about your uptime. Website monitoring that does all the hard work for you. We’ll alert you when your website goes down. With 30 second check rates and 30 different countries to monitor from, you’re in safe hands.

Cisco ThousandEyes is a cutting-edge network intelligence platform designed to provide organizations with deep visibility into digital experiences across the internet, cloud, and enterprise networks. By leveraging advanced monitoring and analytics, ThousandEyes helps businesses pinpoint, troubleshoot, and resolve performance issues impacting critical applications, websites, and services. Its comprehensive suite of tools offers insights into network performance, application delivery, and user interactions, enabling organizations to ensure seamless connectivity and optimal user experiences. Widely adopted by Fortune 500 companies and SaaS providers, ThousandEyes is a trusted solution for navigating the complexities of modern hybrid and multi-cloud environments, empowering IT teams to proactively manage and optimize their digital ecosystems.

Provides monitoring of all mission-critical infrastructure components including applications, services, operating systems, network protocols, systems metrics, and network infrastructure. Hundreds of third-party addons provide for monitoring of virtually all in-house applications, services, and systems. Provides a central view of your entire IT operations network and business processes. Powerful dashboards provide at-a-glance access to powerful monitoring information and third-party data. Views provide users with quick access to the information they find most useful. Automated, integrated trending and capacity planning graphs allow organizations to plan for infrastructure upgrades before outdated systems catch them by surprise. Alerts are sent to IT staff, business stakeholders, and end-users via email or mobile text messages, providing them with outage details so they can start resolving issues immediately.

DNS checks made easy. DNS Check enables you to monitor, share, and troubleshoot DNS records easily. Monitor Monitor DNS records and name servers for changes and lookup failures. Get notified if something changes. Import your entire zone file or just those records that you want to monitor. Share Request DNS record updates by sharing a link that shows which records are posted correctly, and which aren't. Get notified as updates are detected. Quickly troubleshoot and resolve DNS issues. If something's broken, our DNS checker allows you to identify whether it's there's a DNS issue involved and, if so, what to fix. The DNS Checker. At the heart of DNS Check is a DNS record checking tool, which compares the DNS records that you enter to what DNS servers are returning in response to queries. If there's an issue, the record checking tool enables you to identify it quickly. Detectable issues include: Unresponsive name server. The wrong IP address returned.

100% cloud-based, load-balanced, geo-distributed, highly available Anycast DNS infrastructure hosted in 25+ countries. Cloud-based web security is delivered at the DNS level, the first layer for everything internet-connected. Block phishing, malware domains, malicious sites, botnets, C&C callback events, spyware, drive-by-downloads, XSS-injected sites, cookie stealing, anonymizers, TOR, encrypted files & all web-borne attacks. Protect, control, and monitor users' web traffic regardless of where they are connecting the internet from. Per company, location, endpoint, mobile device, IP, subnet, and user. Add your own logo, show different pages for each category, or change the messages to serve your needs. Get real-time web visibility for everything internet-connected and schedule reports to be sent to your email. Protect mobile devices seamlessly across 2G, 3G, 4G, LTE cellular networks, and Wi-Fi.

CaptainDNS is a DNS management platform designed for businesses, developers, and system administrators who need full control over their domain infrastructure. Core features include: DNS Management — Create, edit, and organize all your DNS records (A, AAAA, CNAME, MX, TXT, NS, SOA) from a centralized interface. Manage single domains or large portfolios with ease. DNS Health Audit — Run a complete diagnostic of your DNS zone. CaptainDNS checks the full chain: parent delegation, nameservers, SOA records, IPv4/IPv6 connectivity, TCP accessibility, and DNSSEC validation. Issues are flagged clearly for fast troubleshooting. DNS Monitoring — Track the availability and resolution of your domains over time. Get alerted when something goes wrong before it impacts your users. Domain Redirect — Redirect any domain to a target URL with automatic HTTPS and TLS certificate provisioning. No server configuration required.

PerfOps is a comprehensive infrastructure monitoring and analytics platform that enables organizations to measure and optimize the performance of their CDN and DNS providers. It offers a suite of tools, including analytics for detailed performance and availability insights, continuous monitoring through Real User Monitoring (RUM) to assess services as experienced by actual users, and on-demand network tests utilizing a global network of servers for commands like traceroute and curl. The platform provides access to raw logs for in-depth analysis, customizable alerts to notify users of performance degradations, and the ability to schedule white-label PDF reports for sharing insights with teams. PerfOps supports custom private monitoring, allowing users to add their own HTTP or DNS endpoints for internal analysis, and features a robust API for building custom tools. Its user-friendly interface simplifies the visualization of performance data.