Obviously it is a WIFI network available in your area, although chances are that you have to suscribe to use it. At home, I see an average of 8 networks or APs at any given time!!! Almost all home based APs though.
I think that sometime ago, former GTE was deploying a network called “mobilenet”, but the name is common enough, it could just be your the girl next door’s AP
Where are you located?
Regards,
Marcelo