I think you may have meant "Internet Service Provider" (ISP). An Internet Service Provider (ISP) is a company that provides Internet access to customers. ISPs provide services such as connectivity to the Internet via broadband (DSL, cable, fiber-optic), dial-up, or mobile broadband, and may also offer services such as email, web hosting, and virtual private networking (VPN). ISPs are responsible for maintaining the infrastructure required to connect customers to the Internet and provide a high-speed, reliable Internet connection. Some examples of ISPs are Comcast, Verizon, AT&T, and Time Warner Cable.
Here are some links for more information about Internet Service Providers (ISPs):
Federal Communications Commission (FCC) - https://www.fcc.gov/internet-service-providers
ConsumerReports.org - https://www.consumerreports.org/internet-service-providers/
BroadbandNow - https://broadbandnow.com/
PCMag - https://www.pcmag.com/picks/the-best-internet-service-providers
These websites offer information about ISPs, internet speeds, coverage areas, prices, and other important details that can help you make an informed decision when choosing an Internet Service Provider.