An organisation that provides a service by telephone, such as an 0800 (toll free) number. The service provider buys the services of a telecom supplier (e.g. BT) but advertises the service and deals with the calls itself. Increasingly, service providers are now also managing their advanced call-routing.
I take my lunch to work every day and we called our AT&T service provider to lower our service.
In early 2011, the Internet service provider alerted the owner of the IP address that I was seeking his street address.