Since you didn't specify which area code, you have look up the report for your area code at the link below. Look for 305 in the "NXX" column.
http://www.nanpa.com/nas/public/assigned_code_query_step1.do?method=resetCodeQueryModel
You can use the resources from the internet. Type in 305 code as your key word on your search.
322
Many different - see attached list.
I have a 484 area code and its Tmobile if that's what your asking
The 501-258 prefix serves Little Rock, Arkansas. The primary company associated with that prefix is AT&T; however, with number portability, any specific number in the 501-258 prefix could be served by any local telephone company in that area, including both cellular and landline companies.
The (870) 904 prefix is primarily assigned to Verizon Wireless in Magnolia, Arkansas. However, with number portability, a number in that prefix could be served by any phone company (landline or cellular or other) that operates in Magnolia, AR.
The company is located in Miami FL. 305 is the area code.
The Electric Company - 1971 305 3-45 was released on: USA: 21 December 1973
There is no single cell phone prefix for the USA. Most cell phones are given numbers with the local area code of their owner.
Cell
cyto-
the sell
305-954-4495