Glossary: ISP (Internet Service Provider)
An ISP is a company that provides internet access to customers.
Role of ISPs
ISPs are the gateway between your devices and the internet. They provide the infrastructure and services necessary for internet connectivity, including IP address assignment, routing, and DNS resolution.
Types of ISPs
- Tier 1: Global backbone providers with settlement-free peering
- Tier 2: Regional providers that peer and purchase transit
- Tier 3: Local ISPs that purchase transit from larger providers
ISP Services
- Internet connectivity
- IP address allocation
- DNS resolution
- Email services
- Web hosting
- Content filtering (in some regions)