IANA
An organization who oversees core internet infrastructure management parameters, including port assignments.

ICANN
The not for profit organization responsible for managing the internet’s domain name system, including IP address space allocation.

Image Map
An image that contains more than one hyperlink on a Web page. Clicking different parts of the image links the user to other resources on another part of the Web page, a different Web page, or a file. Often, an image map, which can be a photograph, a drawing, or a composite of several different drawings or photographs, is used as a map to the resources that can be found on a particular Web site.

Inbound Links
A hypertext link to a particular page from elsewhere, bringing traffic to that page. Inbound links are counted to produce a measure of the page popularity. Searches for the inbound links to a page can be made on Altavista, Infoseek and Hotbot or with the Google Toolbar's "backward links".

Intellectual Property
Content of the human intellect deemed to be unique and original and to have marketplace value—and thus to warrant protection under the law. Intellectual property includes but is not limited to ideas; inventions; literary works; chemical, business, or computer processes; and company or product names and logos. Intellectual property protections fall into four categories: copyright (for literary works, art, and music), trademarks (for company and product names and logos), patents (for inventions and processes), and trade secrets (for recipes, code, and processes). Concern over defining and protecting intellectual property in cyberspace has brought this area of the law under intense scrutiny.

Internet
The Internet is the enormous collection of interconnected networks, connected using TCP/IP protocols. Probably the largest Wide Area Network in the world, the Internet connects tens of thousands of independent networks.

InterNIC
InterNIC was originally started as a joint effort between Network Solutions and AT&T, to perform many of the functions now performed by ICANN. The InterNIC is no longer functioning, but hosts an information site regarding domain name registrations.

Interstitial
Advertising creative placed in-between the origin website and the destination website, either physically or in time. Also called a pop-up window. The interstitial is analogous to the advertising inserts in the Sunday paper that usually go straight to the trash. Newer concepts called superstitials or metastitials attempt to be more acceptable to consumers by being less intrusive, subtle and more interesting with the use of rich media components such as video.

Invoice
The bill for a domain name registration fee or renewal (re-registration) fee. Invoices are sent to the billing contact via both postal mail and email.

IP Address
A unique number given to each domain name that is used to specify hosts and networks. For example 217.118.82.208 is an IP address.

IP Delivery
Also called cloaking, this technique presents different content depending on the IP address of the client. It is very difficult to view pages hidden using this technique, because the real page is only visible if your IP address is the same as (for example) a search engine's spider.

IP Number
Every computer connected to the Internet has a unique number called an IP number, or Internet Protocol number. An IP number is like a name identifying that computer. It consists of four sections separated by dots. An example of an IP number is: 165.113.245.2

ISP - Internet Service Provider
Companies that provide access to the Internet for money. AOL with their mass marketing campaigns is a popular Internet Service Provider, or ISP.