dug is billed as a powerful global DNS propagation checker that can output in a variety of formats.
The goal of dug is to make it easy to check the propagation of DNS records. It is also capable of providing templated output that can be used in scripts for things like monitoring.
This is free and open source software.
Key Features
- Queries geographically distributed DNS servers in parallel to check DNS propagation.
- Automatically selects reliable nameservers from different continents.
- Watch mode repeatedly checks DNS records and updates the displayed results.
- Supports querying specific DNS record types and selecting individual nameservers.
- Displays results in readable tables or exports them as JSON and CSV.
- Customisable output templates for selecting details such as IP address, location, record value and response time.
- Can import additional DNS servers from local files and remote sources.
- Checks nameserver reliability and can remove unresponsive servers from its server list.
- Automatically localises output using the system’s locale.
Website: github.com/unfrl/dug
Support:
Developer: Matthew Monahan, Unfrl LLC
License: MIT License

dug is written in C#. Learn C# with our recommended free books and free tutorials.
Related Software
| Alternatives to dig | |
|---|---|
| dog | DNS client with colorful output, DNS-over-TLS and DNS-over-HTTPS support |
| doggo | Command-line DNS client for humans |
| drill | Perform DNS lookups and display answers returned from the name server(s) |
| dnslookup | Supports plain DNS, DoH, DoT, DoQ, and DNSCrypt |
| dug | Global DNS propagation checker |
| q | Support for UDP, TCP, DoT, DoH, DoQ and ODoH |
| DNS Clients | |
|---|---|
| dog | Colourful output, understands normal command-line argument syntax |
| doggo | Command-line DNS client for humans |
| q | Tiny command line DNS client supporting UDP, TCP, DoT, DoH, DoQ and ODoH |
| ddclient | Update dynamic DNS entries |
| GoDNS | Dynamic DNS (DDNS) client tool |
| dig | DNS lookup utility |
| awl | DNS lookup tool |
| ZDNS | High-speed DNS resolver and command line utility |
| dnslookup | Make DNS lookups |
| dug | Global DNS propagation checker |
| drill | Perform DNS lookups |
| dness | Dynamic DNS client |
| In-a-Dyn | Small and simple Dynamic DNS, DDNS, client |
| dnsupdate | Modern and flexible dynamic DNS client |
| wig | Simple and lightweight DNS client |
| dyndnsc | Dynamic DNS update client |
Read our verdict in the software roundup.
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