We have absolutely no context with which to answer your question. It could mean anything, it could even mean nothing at all. Why do you think it is important?
Typically used to separate the username (and password) part from the address part in a url. ftp://dilver@98.53.213.43/ or ftp://dilver:dilvers_password@98.53.213.43/
"Best guess: it means "at". E.g. "program foo is running @ 1.2.3.4". "
can you tell me more about it as I could not understand the meaning :)
Typically used to separate the username (and password) part from the address part in a url.
ftp://dilver@98.53.213.43/ or ftp://dilver:dilvers_password@98.53.213.43/
UserDude123 is on the machine with the address 192.168.1.23
The @ symbol is essentially just shorthand for "at", or as JLBorges pointed out; a syntactical symbol with a meaning very analogous to "at" in English.