I am confused about the use of afp urls. On the File Sharing page I see the usual message about users accessing shared files but the afp url is different depending on what router my machine is connected to. Can anyone tell me where that name comes from? For example when one router is connected I see:

...all volumes at afp://tommos-iphone.home

but when another is connected I see:

...all volumes at afp://

I'm concerned because the first one is the name of an iphone of someone who used to visit the house a few years ago, and before I got the current machine.