Free DNS & Network Tools
A complete toolkit for diagnosing domains and connectivity. Query DNS records, check global propagation after a change, verify mail records (MX, SPF, DMARC), and trace network paths with ping and traceroute. Useful for sysadmins, developers, and anyone debugging a domain.
- DNS LookupQuery public DNS records for any domain — A, AAAA, MX, TXT, NS, CNAME, SOA, SRV, CAA, and PTR.
- DNS Propagation CheckerCheck DNS record propagation across global public resolvers. Compare answers from Google, Cloudflare, Quad9, and more.
- MX Record LookupLook up mail exchange (MX) DNS records for a domain, sorted by priority with mail host IP resolution.
- SPF Record CheckerLook up and validate SPF TXT records for a domain. Parse mechanisms, count DNS lookups, and review policy strength.
- DMARC CheckerLook up and parse DMARC DNS records for a domain. Review policy, reporting tags, and SPF alignment hints.
- IP Address LookupLook up geolocation, ISP, ASN, reverse DNS, and IP format details for any public IPv4 or IPv6 address.
- Ping TestPing a hostname or IP from the server. Check reachability, packet loss, and round-trip latency.
- Traceroute ToolTrace the network path to a hostname or IP. Shows each hop, round-trip times, and whether the route completed.
- Port ScannerScan common TCP ports on a public host — check which services are reachable from the server.
Frequently asked questions
- What is the difference between DNS lookup and DNS propagation?
- A DNS lookup queries the current records for a domain. A propagation check queries many resolvers worldwide so you can see whether a recent change has rolled out everywhere.
- Do I need to install anything to run these network tools?
- No. They run server-side on demand and return results to your browser — there is nothing to install or configure.