| − | An '''IP address''' ("Internet Protocol", commonly known as an ''[[IP]]'') is a number which identifies a computer on the Internet. It is given to a [[computer]] upon accessing the [[Internet]] or a [[LAN]]. | + | An '''IP address''' ("Internet Protocol", commonly known as an ''[[IP]]'') is a number which is an exclusive number all information technology devices including printers, routers, modems, et al. It is given to a [[computer]] upon accessing the [[Internet]] or a [[LAN]]. |
| − | IP addresses may be either ''static'' or ''dynamic''. Static IP addresses do not change, while dynamic IP addresses do. If a computer's dynamic IP address expires, the computer is assigned a new one. | + | IP addresses may be either ''static'' or ''dynamic''. Static IP addresses do not change, while dynamic IP addresses do. Dynamic IP addresses are issued from a pool of IP addresses allocated by your ISP or DHCP Server. If a computer's dynamic IP address expires, the computer is assigned a new one. |
| | IP addresses are often traced to service providers using WHOIS searches such as those provided by the five RIRs. WHOIS search results usually provide useful information for contacting the ISPs to report abuse. | | IP addresses are often traced to service providers using WHOIS searches such as those provided by the five RIRs. WHOIS search results usually provide useful information for contacting the ISPs to report abuse. |
| | + | IP version 4 is what's currently used by most network devices. However, with more and more computers accessing the internet, IPv4 addresses are running out quickly. Just like in a city, addresses have to be created for new neighborhoods but, if your neighborhood gets too large, you will have to come up with an entire new pool of addresses. IPv4 is limited to just 4,294,967,296 addresses. IP version 6 is the replacement for the aging IPv4. The estimated number of unique addresses for IPv6 is 340,282,366,920,938,463,463,374,607,431,768,211,456 or 2^128. |