Forum Thread: Get a Email from an Ip-Adress?

OK, Joe, let's first make a big assumption - that your victim's IP address is static - i.e. it's not just one of 10,000 new, random, dynamic IP addresses their ISP or mobile data provider allocates to them every time their router or mobile phone connects/reconnects/reboots, as is the case with most people. If that is true, and your victim always has the same IP, you can derive at least some info from that which may relate to their current email address. But then again, it may not... Huh?

Well, for example, I have a static IP address and it is 203.59.106.999 (everything but last 3 digits are true). If I run a traceroute on 203.59.106.999, I see 17 hops down the line, until the trail runs cold at something.dyn.iinet.net.au. Well, iinet.net.au is my ISP and, yes, when I signed up with them they generously provided me with mychosenusername@iinet.net.au. So, if you know your victim's ISP username or could make an educated guess as to what it may be and use something awful and false-positive happy like https://email-checker.net/, you may find their good old default ISP email. Do I use my 1337h4x0r@iinet.net.au email, though? No... of course not. I use Gmail like everyone else on earth. So, alas, your results could be mixed at best.

You could scour every corner of the inter-ma-net in hopes of some finding some poorly admin'd forum which published/cached server logs showing the victim's IP when he posted cat-breading pictures back in 2011? I don't like your chances, though.

At the end of the day, no, there is no way of easily ascertaining someone's email address from their temporary (most likely) or even permanent IP address as one in no way informs the other. I could be advertising an IP address allocated by the McDonalds free Wifi I am using as I login and check my manager@burgerking.com email.

I wish I had better news but unless anyone else can think of something I have missed, knowing an IP does not = knowing an email. At best, guessing what their ISP (if that IS their ISP) may have allocated to them upon signup.

Good luck, though!

oh, okay! thanks!

To be honest if you're doxing someone, IP addresses are pretty much a dead end. They can be useful to get a general location of the person to check which address is theirs and you might be able to social engineer their ISP into giving you information about the IP if you're good at that but for the most part they're not going to give you a goldmine of information.