![]() Sometimes when designing a new web site, you may need to test certain aspects of the site before launching the site live to the general public. Why Would I Want to Edit The Host Files On My Computer? Therefore, most of the time your computer will ask for the IP addresses of web sites you wish to visit from your ISP. ![]() You will probably have very few (if any) entries within your Local Hosts file. ![]() The majority of the time, you will not have all the IP Addresses of all the web sites from the entire Internet in your “address book”. If not, your computer will ask the DNS Server belonging to your Internet Service Provider for the associated IP address for the corresponding web site and connects you to that web site. If you do, then your computer will use that number it has on file locally to “call” and the corresponding web site opens. Exactly like the example above, when you type an address like into your web browser, the Hosts file on your own computer is referenced to see if you have the IP address or “telephone number” for that web site. Simply put, the Hosts file is similar to an address book. COM domain is being hosted by a web server with the IP Address of 201.983.756.4” and forwards you to that location and before you know it, you are looking at the web site for Joe’s Pizza. The DNS Server is thinking “The web site JOESPIZZA in the. This Domain Name Server (DNS) looks through all its domain name entries for Joe’s Pizza. In the world of the Internet, this “411” Operator is know as a Domain Name Server. When you hit the Enter key, your request is sent to the “Internet 411 Operator” used by your Internet Service Provider company (or ISP for short). You happen to know that the web site address for your favorite pizza joint is (because that’s a lot easier to remember than some four part numerical value). Now let’s use the first example of placing a traditional phone call into the context of visiting a web site using your computer’s browser to explain how web addresses work. Host names are the web site addresses you see every day: We used these “words” like so humans don’t need to remember the long IP address numbers when they want to visit a web site. However it would be impossible to remember that the IP Address for Joe’s Pizza is 201.983.756.4, so the Domain Name System was created. Most people do not realize that Internet servers can only be addressed via IP addresses. ![]() Just like every company out there will have a different and unique phone number, every web site out of the Internet will have a specific numeric address assigned to it known as an IP address or “Internet Protocol Address”. The Internet is the same way for the most part. I will connect you now…” and the next thing you know you are speaking with Joe’s Pizza ordering your dinner. The Operator replies “The phone number for Joe’s Pizza in Paramus New Jersey is 201.983.7564. You ask the operator “What’s the phone number of Joe’s Pizza in Paramus, New Jersey?” The Operator looks through all the company listings in that area and finds the listing for Joe’s Pizza. Think of yourself placing a phone call to the 411 Operator. There are times when you may wish to test a web site you have designed before the actual domain name’s DNS (Domain Name System) entry is updated. ![]()
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