LSE toolsLSE toolsFierce (111)Fierce (111)

Tool and Usage

Project details
Programming languagePython
AuthorMatt Schwager
Latest release1.4.0 []

Project health

This score is calculated by different factors, like project age, last release date, etc.

How it works

Fierce uses DNS information to extract information. This can be from SOA and NS records, but also by obtaining details with a domain zone transfer.

Usage and audience

Fierce is commonly used for information gathering, reconnaissance, or security assessment. Target users for this tool are pentesters and security professionals.

Tool review and remarks

The review and analysis of this project resulted in the following remarks for this security tool:


  • + The source code of this software is available

Author and Maintainers

Fierce is under development by Matt Schwager.


Supported operating systems

Fierce is known to work on Linux.

Fierce alternatives

Similar tools to Fierce:



Async DNS Brute, or aiodnsbrute, is a security tool to help with resolving many DNS entries and the related discovery.



SubBrute is a DNS meta-query spider that enumerates DNS records and subdomains. This can be useful during penetration tests and security assessments.



SubFinder is a subdomain discovery tool. This can be useful to learn more about a particular target and available subdomains.

All Fierce alternatives

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Related tool information


This tool is categorized as a DNS enumeration tool and DNS reconnaissance tool.