Network Diagnostic Tools
Professional-grade tools for network administrators and IT professionals to diagnose, troubleshoot, and optimize network connectivity and performance.
What Are Network Diagnostic Tools?
Network diagnostic tools are essential utilities that help IT professionals identify, troubleshoot, and resolve network connectivity issues. These tools provide insights into how data moves across networks, where bottlenecks or failures occur, and how to optimize network performance.
Whether you're diagnosing slow internet connections, troubleshooting email delivery problems, or setting up new network infrastructure, these tools provide the visibility needed to understand what's happening behind the scenes.
Our suite of network diagnostic tools includes DNS lookup utilities, connectivity testers, and performance measurement tools—all designed to give you accurate, actionable information about your network's health and performance.
Network Diagnostic Tools
DNS Lookup
Query DNS records for domains with comprehensive results including A, AAAA, MX, CNAME, TXT, NS and SOA records.
Reverse DNS Lookup
Find domain names associated with an IP address by querying PTR records from DNS servers.
Ping Test
Measure network latency and packet loss to diagnose connectivity issues with remote hosts.
Port Checker
Test if specific TCP ports are open on remote servers to troubleshoot connectivity and firewall issues.
Network Speed Test
Measure upload and download speeds to evaluate your internet connection performance.
Common Network Diagnostic Scenarios
Troubleshooting Email Delivery Issues
When emails aren't being delivered properly, DNS issues are often the culprit. Use our DNS Lookup tool to check MX records, SPF, DKIM, and DMARC configurations to ensure proper email routing and authentication.
Use DNS Lookup Tool →Diagnosing Website Connection Problems
If users can't access your website, you need to determine whether it's a DNS issue, network connectivity problem, or server failure. Our Ping Test and Port Checker tools help identify where the connection is breaking down.
Identifying Unknown Devices on Your Network
Security-conscious administrators need to identify all devices connected to their networks. Our MAC Address Lookup tool helps you determine the manufacturer of unknown devices by their MAC address.
Use MAC Address Lookup Tool →Verifying DNS Propagation
After making DNS changes, it's important to monitor propagation across the internet. Use our DNS Lookup tool to check if your DNS changes have propagated to different DNS servers worldwide.
Use DNS Lookup Tool →Frequently Asked Questions About Network Diagnostics
What's the difference between ping, traceroute, and port checking?
Ping tests basic connectivity by measuring round-trip time to a host. Traceroute shows the path packets take through the network, revealing where delays occur. Port checking verifies if specific services (like web servers on port 80) are accessible and responding on a remote host.
How do I interpret DNS lookup results?
DNS lookup results show various records associated with a domain. A records show IPv4 addresses, AAAA show IPv6 addresses, MX records indicate mail servers, CNAME records are aliases, and NS records show nameservers. The TTL (Time To Live) value indicates how long the record can be cached.
Why would I need to perform a reverse DNS lookup?
Reverse DNS lookups are useful for identifying the domain name associated with an IP address. This is valuable for troubleshooting, verifying email server configurations, investigating security incidents, and identifying unknown connections in your logs.
How accurate are network speed tests?
Network speed tests provide a good approximation of your connection speed, but results can vary based on factors like server location, current network congestion, and your device's capabilities. For the most accurate results, run multiple tests at different times of day.
Can these tools help diagnose VPN connection issues?
Yes, our network diagnostic tools can help troubleshoot VPN issues. Use the Ping Test to check basic connectivity, Port Checker to verify if VPN ports are open, and DNS Lookup to ensure DNS is resolving correctly when connected to the VPN.
Ready to Diagnose Your Network?
Our professional-grade network diagnostic tools are free to use and provide instant results. Start troubleshooting your network issues now.