Will the IP address reveal this?
Answers:
Sometimes the IP address will reveal it, however in that are some difficulties.
Most Internet Service Providers dynamically allocate their IP address, so when someone dials up they acquire an alternative or smaller quantity "at random" from their pool of available IP address. You'd necessitate to contact the ISP to find out who be logged on and when, and they probably wouldn't narrate you lacking a court lay down.
Most corporates largely own fixed address, but later they will also use a proxy server, so adjectives of the network traffic from their organisation comes from alike address, making it harder to trace.
Some ISPs (Demon in the UK used to do this; I don't know if they still do) allocate static IP address to their customers, and set up reverse DNS appropriately, so you can bring up to date who the domestic device is. However, next to the address space on the Internet running a bit low today, this practice is becoming a bit more infrequent, and normally they tender it as a "premium service" (meaning it costs more), if they propose it at adjectives.
It's not adjectives doomed to failure though - use Sam Spade to do some address digging and that will give support to you. Sometimes the binary of it disappears past its sell-by date the site (it's regularly below attack because it's also a severely moral anti-spam tool), so own a hunt around; I reason CNet and Filehippo mirror copies of it. Version 1.4 be the final one that I know of.