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Apps / Digger

Digger

Modern, advanced DNS lookup tool

Thiago Fernandes ✓ Verified

io.github.tobagin.digger
View on Flathub ↗

Digger is a feature-rich DNS lookup tool designed for the GNOME desktop. It provides an intuitive interface for exploring DNS records, from simple queries to complex diagnostics.

Key features include:

  • Support for all major DNS record types (A, AAAA, MX, TXT, NS, etc.)
  • Advanced options like reverse lookups, trace options, and custom servers
  • DNS Blacklist (DNSBL) checking and performance monitoring
  • Malware domain checking and DNSSEC chain-of-trust validation
  • History with search and favorites management
  • Batch lookup and server comparison tools
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Screenshots

Main application window
Main application window
Query results with DNSSEC validation
Query results with DNSSEC validation
Query history and search
Query history and search
Preferences and configuration
Preferences and configuration

Observed history

App ChangeVersionWhen ↓
updated2.9.14 Oct 2026

Upstream releases

Release notes supplied by the developer. These dates are not Flathub package publication times.

2.9.14 Oct 2026

Bug fix release

  • Fixed a crash when running a lookup with any DNS server other than System Default
  • Fixed command output from dig and whois being read past its end
2.9.01 Oct 2026

Feature release with new DNS tools, plus a runtime and dependency refresh

  • Malware Domain Check - VirusTotal and Spamhaus DBL threat intelligence with safety scoring (Ctrl+Shift+T)
  • Query Templates - save and reuse named query templates with {{param}} macros (Ctrl+Shift+L)
  • DNS Record Validator - RFC syntax and compliance checks for common record types
  • IPv6 Connectivity Testing - dual-stack detection and AAAA reachability over IPv6
  • Updated to the GNOME 51 runtime
  • Bundled BIND updated to 9.20.29, replacing the end-of-life 9.16 branch
  • DNSSEC signatures are now actually validated; the previous build shipped dig without crypto support
2.8.017 Jul 2026

Feature release with new DNS tools and security hardening

  • DNS Propagation Check - compare a record across eight public resolvers (Ctrl+Shift+G)
  • Subdomain Enumeration - discover live subdomains from a built-in wordlist (Ctrl+Shift+E)
  • DNSSEC Chain of Trust - visualize the chain from the TLD down to the domain (Ctrl+Shift+K)
  • Domain Monitoring - watch domains for record changes with desktop notifications (Ctrl+Shift+W)
  • Security: fixed a DNS-over-HTTPS parser out-of-bounds read and hardened input validation and exports
  • DNS-over-HTTPS now decodes all common record types and follows RFC 8484
2.7.17 Jun 2026

Bug fix release

  • Increased default window height so the "Look up DNS records" button is fully visible on launch