About Global DNS Checker

Global DNS Checker is a free DNS propagation checker that queries DNS records across 400+ DNS servers in 103 countries worldwide. It helps system administrators, web developers, and IT professionals verify that DNS changes have propagated globally.

How It Works

When you perform a DNS lookup, the tool queries hundreds of DNS servers distributed across the globe at the same time. Each server returns the records it currently holds, so you can see which servers have received your updated records and which are still serving cached data.

Features

• Query 48 DNS record types: A, AAAA, CNAME, MX, NS, PTR, SOA, SRV, TXT, CAA, DS, DNSKEY, RRSIG, NSEC, NSEC3, NSEC3PARAM, CDS, CDNSKEY, KEY, SIG, DLV, TA, NXT, HTTPS, SVCB, TLSA, SMIMEA, SSHFP, OPENPGPKEY, CERT, URI, IPSECKEY, DHCID, NAPTR, DNAME, LOC, HINFO, RP, KX, AFSDB, CSYNC, ZONEMD, EUI48, EUI64, SPF, APL, HIP, ANY
• 400+ DNS servers across 103 countries
• Real-time response times and server reliability data
• Interactive map view with global server locations
• REST API and GraphQL API for programmatic access
• SEO-friendly shareable lookup URLs

Technology

Built with Node.js, Express, MongoDB, and EJS templates. DNS queries are performed with the dns2 library over UDP with a TCP fallback.

Feedback

Questions, bug reports, and feature requests are welcome at [email protected].