How do some tools give Personally Identifiable Information like for ex – Company names of website visitors going on a specific website? They claim to so it with reverse IP lookup.
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IP addresses function very much like the addresses written on an envelope of traditional snail mail.
Every time you go to a website it’s likely that your source IP address (the address on your packets) is logged by that website.
Each IP address is in turn in a database that says who owns it, be it a datacenter, a business, or an ISP.
IP addresses can also be associated with DNS names, like Reddit or another website.
All of this information can be easily looked up if you know where to look.
If you come to my website I can see your source IP Address instantly. With your IP address I can very quickly look up which country you are in, what ISP you are using, and if that IP is associated with a website, a business, or email. It’s fairly trivial.
An IP address though doesn’t necessarily represent a specific person, in the same way that a phone call from a business or a house could be from anyone in that home or business.
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