An IP address is a string of numbers in the format xxx.xxx.xxx.xxx, where xxx ranges from 0 to 255. An IP is used to represent a computer on the internet, and it is specified by RFC 791.

In the context of web hosting, an IP address specifies where your website is hosted. The **nameservers** of your domain are used to find this IP address.

It is possible to host multiple websites on one IP address. This is referred to as virtual web hosting (multiple domains resolve to one virtual address). A dedicated IP implies that an IP address is allocated to only one domain.