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Enter the website name or IP address you want and press the GO button to continue.
DomainTools
DomainTools is a tool to perform the reverse IP lookup on any website.
bang out its domain name or IP address into the text box and click Lookup.
It rapidly gives the results you want.
MXToolBox
MXToolBox tool is a very simple tool to use.
Enter an IP address in the input field to perform the reverse DNS lookup.
This tool is not pre-installed in Linux.
you should probably install it manually from their GitHubrepository.
Crips is a collection of online IP Tools for quickly obtaining information about IP Addresses and DNS records.
Go to that directory and trigger the tool using python.
Next, choose the option you want.
For example, here I am performing a Reverse IP lookup using the Crips tool.
In a few seconds, it gives the result after entering the target domain address.
And finally, the output will be saved in an index file in the same directory.
Next, lets understand the concepts of reverse DNS lookup and reverse IP lookup.
What is Reverse DNS lookup?
This is known as forward resolution and has a forward DNS record.
This is done each time you go to a website on the internet.
A reverse DNS record is the exact opposite of a forward DNS record.
You just begin by looking up the IP address to see what domain or hostname is associated with it.
Reverse DNS, often known as rDNS, is not as widely utilized as conventional DNS lookups.
Without even an rDNS record, domains will still load.
Reverse DNS entries are stored in a particularPTR-recordtype.
Performing a Reverse DNS lookup on an IP can be done easily by running commands in a terminal.
On Windows, Mac, and Linux, there is a command called nslookup.
This does a lookup and first tells where its getting the information from.
Here, it shows the details about DNS resolver information first.
Then, it shows the hostname that the reverse DNS record points to for the given IP.
What is Reverse IP Lookup?
It finds all the DNS A records associated with a specific IP address.
It essentially returns a list of all domain names with the same IP address.
After all, they are not hacker targets.
Lets say website A is the target web tool, and hackers couldnt find any vulnerabilities to exploit.
As a result, the attacker will also have access to all the information on website A.
These websites may belong to the same organization or different organizations.
To stop a thief, one has to think like a thief.
Thats why knowing about Reverse IP lookup is very important for security researchers.
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