Run DNS lookup, ping, traceroute, reverse DNS, TCP port checks, RDAP and IP checks from one place. For connection performance, use our Internet & WiFi Speed Test.
The Network Diagnostics Suite brings together DNS lookup, ping, traceroute, reverse DNS, RDAP registration checks, TCP port testing and bandwidth unit conversion in one workflow-friendly page. Each tool answers a different question, so you can narrow down connectivity, naming, routing or service-access problems without installing desktop software.
These checks are intended for public domains and IP addresses you own or are authorised to test. Private, reserved and local-network targets are blocked for safety. For headline connection speed, latency and upload measurement, use the dedicated Internet Speed Test after basic reachability checks pass.
Start with the narrowest check that matches the symptom, then move outward only if the earlier step does not explain the problem.
Check whether common TCP service ports respond on a public domain or IP address you are authorized to test.
Use the dedicated tracker for current-IP detection, location fallback and map results.
Run these diagnostics only for infrastructure you own or are authorized to test.
Enter a positive bandwidth value to convert between BPS, KBPS, MBPS and GBPS.
Each test answers a different troubleshooting question. Begin with the narrowest check that matches the problem.
Confirm the addresses, mail routes and name-server records published for a domain.
Check basic reachability and round-trip response to a public destination.
Inspect the routed path when latency or reachability changes between networks.
Review public registration details for an IP range or domain.
Test an authorized public TCP service such as web, mail or remote access.
Translate line-rate units without confusing bits and bytes.
DNS lookup shows live name records such as website addresses, mail servers and text verification entries. RDAP shows public registration metadata for a domain or IP range, such as status, country and registration dates.
Use ping when you only need to know whether a destination responds and how stable the round-trip time is. Use traceroute when ping works but performance is poor and you need to see which network hops add delay.
Reverse DNS maps an IP address back to a hostname. It is commonly checked by mail servers and some security systems, and it can help confirm whether an address belongs to the provider you expect.
Only test public systems you own or have permission to assess. Private, reserved and local-network targets are blocked, and port checks should never be used for unauthorised scanning.
DNS answers depend on resolver caching, TTL values and recent record changes. A record that was updated recently may appear at one resolver before another.
A closed port usually means nothing is listening on that service at the target. A filtered result often indicates a firewall or network policy is blocking the probe before it reaches the service.
No. This page runs diagnostics from the website server path, which can differ from your home or office route. Use it for quick checks, then compare with local tools when the path matters.
After naming and reachability look correct, run the speed test to measure throughput, then use the dedicated port checker or IP tools if a specific service still fails.
Combine DNS, ping and port checks when troubleshooting offices on Zerolink broadband or leased lines across Panipat, Karnal and Gharaunda.