LSE top 100LSE top 100Fierce (78)Fierce (78)

Tool and Usage

Fierce is a security tool that helps with DNS reconnaissance. It can locate non-contiguous IP space, but using DNS information.

Screenshot for Fierce tool review

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

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

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

Tool review

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.


Support operating systems

Fierce is known to work on Linux.

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Project details
Latest release1.2.1rc2 [2018-02-10]
Last updatedFeb. 12, 2018

Project health

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GitHub iconFierce GitHub project

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