DNS recon Alternatives

Apps similar to DNS recon include Fierce, which is free and open source. Other options are SubBrute and Knockpy. In total there are three apps like DNS recon for Linux, Mac and Windows.

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DNS recon alternatives page was last updated Jun 12, 2025

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Fierce
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Fierce is a semi-lightweight scanner that helps locate non-contiguous IP space and hostnames against specified domains.
Cost / License
Free
Open Source
Platforms
Linux
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Good alternative?Is Fierce a good alternative to DNS recon?
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SubBrute
2 likes
SubBrute is a DNS meta-query spider that enumerates DNS records, and subdomains.
Cost / License
Free
Open Source
Platforms
Linux
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Good alternative?Is SubBrute a good alternative to DNS recon?
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Knockpy
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Knockpy is a portable and modular python3 tool designed to quickly enumerate subdomains on a target domain through passive reconnaissance and dictionary scan.
Cost / License
Free
Open Source (GPL-3.0)
Origin
Italy
EU
Platforms
Windows
Linux
Mac
Python
Italy
EU
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Good alternative?Is Knockpy a good alternative to DNS recon?