Network Diagnostics
DNS lookups, WHOIS queries, SSL verification, IP geolocation, ping tests, port scanning, and more network tools — all free.
Diagnostics
15
network tools
DNS Lookup
Query A, AAAA, MX, TXT, NS, CNAME, SOA, and PTR records for any domain using live DNS resolution.
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WHOIS Lookup
Retrieve domain registration details, registrar, creation and expiry dates, nameservers, and contact info.
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Reverse IP Lookup
Find all domains hosted on the same IP address with reverse DNS PTR record resolution.
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IP Geolocation
Geolocate any IP address: country, city, region, ISP, timezone, latitude, and longitude.
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What Is My IP
Instantly see your public IP address, ISP, location, and timezone.
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SSL Checker
Verify SSL/TLS certificate validity, issuer, expiry date, and SANs for any domain.
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HTTP Headers Checker
Inspect all HTTP response headers for any URL: status code, server, caching, security headers, and more.
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Ping Test
Measure response time and availability for any domain or IP using HTTP-based latency probes.
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Traceroute
Trace the network path to any host and visualize each hop with latency information.
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Port Scanner
Check whether common ports are open or closed on any host. Tests 30+ well-known service ports.
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MX Lookup
Retrieve MX records for any domain and see mail server priorities for email routing analysis.
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Blacklist Checker
Check if a domain or IP is listed on 40+ DNS-based spam and malware blacklists (DNSBLs).
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MAC Address Lookup
Look up the manufacturer and vendor for any MAC address using the OUI database.
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DNS Propagation Checker
Check DNS propagation across multiple global resolvers to verify record changes have propagated.
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Website Uptime Checker
Check if a website is up or down right now. Measures response time and HTTP status code.
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