An Internet service provider (ISP) is an organisation that provides services for accessing, using, or participating in the Internet. ISP: Internet Service Provider · Dial-up Internet access: It is the oldest technology to provide Internet access by modem to modem connection using telephone lines. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety. An ISP (Internet service provider) is a company that provides individuals and other companies access to the Internet and other related services such as Web site. What does ISP stand for? - Internet Service Provider - Internet Service Provider ( ISP) is a company that provides access to the Internet.