DNS (Domain Name System) translates human-readable domain names into IP addresses. The InfraHub DNS Toolbox lets you query any domain for its DNS records — A (IPv4), AAAA (IPv6), MX (mail), TXT (verification/SPF/DMARC), CNAME (alias), NS (nameservers), and more — using Google's and Cloudflare's public DNS-over-HTTPS resolvers directly from your browser.

The toolbox also validates DNSSEC signatures and visualizes global DNS propagation so you can see how a recent DNS change is spreading across different regions.

DNS queries are made via the DNS-over-HTTPS (DoH) protocol to resolve.googleapis.com and cloudflare-dns.com. DoH encrypts DNS queries as standard HTTPS traffic, preventing eavesdropping. Records are parsed and displayed in a structured, readable format. DNSSEC validation checks the cryptographic signature chain from the root zone down to the queried domain.

DevOps engineers use the DNS Toolbox to confirm that new DNS records have propagated after a deployment. Email administrators verify SPF and DMARC TXT records to prevent spoofing. Web developers confirm CNAME chains for CDN configurations. Security analysts check for unexpected MX records that could indicate email hijacking.