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In the context of Vulnerability Assessment, what is the purpose of checking the reverse IP address of an end-point to find all DNS records of ‘A’ type associated with the IP?

I've come across this method whilst reading a vulnerability assessment report but puzzled by what purpose it really serves.

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  • Reverse DNS is a weak way to try to enumerate resources and find "internal" names.
    – Patrick Mevzek
    Commented Jun 2, 2019 at 4:45

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In order to perform a vulnerability assessment you first need an inventory of what you are assessing. Reverse ip lookups for dns entries are one way to start building that inventory.

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