Please explain the difference between isp and nsp.

ISP is the abbreviation of Internet Service Provider, which means "Internet Service Provider". The service here mainly refers to Internet access service, that is, connecting your computer or other terminal equipment to the Internet through telephone lines. Such as Oriental Netscape and Yinghaiwei.

ISP is a company and organization that provides users with Internet access and/or Internet information services. The former is also called IAP (Internet Access Provider) and the latter is also called ICP (Internet Content Provider). The definition we see now is usually that ISP is an Internet access service provider, but it is not accurate.

NSP (network server provider)

The definition is basically the same as ISP, and the scope is not limited to the Internet, but includes all computer networks.