dnsglobe is a terminal-based DNS propagation checker that queries public resolvers around the world in parallel and compares the answers they return. It is designed for checking how a DNS change is spreading without relying on a browser-based propagation service.
The interface combines resolver results with geographical information and can continue polling a record until the responses converge. It also provides tools for investigating GeoDNS behaviour, resolver caches and the actual anycast sites answering queries, making it useful for more than a simple propagation check.
This is free and open source software.
Key Features
- Queries 34 public DNS resolvers around the world in parallel.
- Supports A, AAAA, CNAME, MX, NS, TXT and SOA records.
- Displays resolver status on either a flat world map or a rotating 3D globe, with automatic selection based on terminal width.
- Supports EDNS Client Subnet queries for checking how GeoDNS answers differ for specified client networks.
- Watch mode repeatedly queries resolvers until propagation reaches 100%.
- Shows response latency, TTL information and expiry countdowns, and can identify stale cached answers or upstream servers still returning old data.
- Uses NSID and resolver-specific identification queries to determine the actual anycast site answering a request where possible.
- Groups answers sharing records so round-robin DNS configurations are not incorrectly treated as inconsistent.
- Allows resolvers to be added or removed during a session and supports permanent custom resolver definitions through a TOML configuration file.
- Offers a non-interactive mode for scripts, including comparison of results across multiple ECS client subnets.
- Supports custom interface themes using ANSI colours, indexed colours or true-colour values.
- Falls back to TCP when DNS responses are truncated.
Website: github.com/514-labs/dnsglobe
Support:
Developer: Nicolas Joseph
License: MIT License
dnsglobe is written in Rust. Learn Rust with our recommended free books and free tutorials.
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