Those messages are produced by mIRC, not by the server, and so do not have raws. mIRC keeps track of who is online from your notify list using /ison or /watch if it is supported by the server.
$notify(0) returns how many people are on your notify list.
$notify(N).ison returns $true if the Nth person in your notify list is online, $false if he isn't and null if there isn't an Nth entry.
