Vaj wrote: > > On Aug 26, 2008, at 1:33 PM, Sal Sunshine wrote: > >> >> Thanks, Vaj. I got a "No match for..." but at least I >> know how to try. > > Try "whois.arin.net" in the pop-up menu under the Whois tab in Network > Utility. You probably chose a registry that does not contain the IP > you are looking for. > >> >> How do you get the IP address though? > > > If you're in Apple Mail, double-click on the email to open it. Then go > up to the "View" pull-down men, go to "Message" and "Long Header". > This will show the the normally hidden header that contains all the > routing information for the email you just opened. In a typical Yahoo! > Groups email, it is listed next to the title "X-Yahoo-Post-Ip" If people are using the web site then you select Show Message Option and select View Source which will show you the whole message header. There will often be more than one IP address showing so you probably want the marked X-Originating-IP.
Note that most IP addresses only show the Internet provider or sometimes just the backbone provider. For instance when I was on Earthlink and even had a static IP the listing only showed Covad who provided the backbone services for Earthlink. Sometimes it will show a real business if the company bought a big package maybe even using a T line.
