Parallel multi-server queries
Query 84 built-in public resolvers in parallel and aggregate all results. More servers means more confidence you're seeing the full picture.
All four protocols
DNS over UDP, TCP, TLS (DoT), and HTTPS (DoH). Ships with 84 configurations across Cloudflare, Google, Quad9, Mullvad, Wikimedia, and DNS4EU.
Discover subdomains
10+ discovery strategies: Certificate Transparency logs, wordlists, AXFR, NSEC walking, SRV probing, TXT mining, permutation, recursive depth, and more.
Validate DNS configuration
13 lints check SOA, NS delegation, MX, SPF, DMARC, CAA, DNSSEC, HTTPS/SVCB, TTL consistency, zone transfer exposure, and delegation consistency.
Propagation, diff, verify, trace
Check propagation across public resolvers. Diff records between nameservers or JSON snapshots. Verify live DNS against BIND zone files. Trace the full delegation chain.
Interactive TUI + Rust library
mdive is an interactive terminal UI for exploring DNS with drill-down navigation and real-time discovery. Plus an async Rust library for your own projects.