How Will You Describe a Domain Name? - Without DNS, we'd...
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Without DNS, we'd all have to memorize long numbers instead of URLs or E-mail addresses. What a mess that would be! Guidelines for the registering a domain names
Internet Corporation for Assigned Names and Numbers (ICANN). Ihe ICANN coordinates the assignment of Internet Domain Names, IP address numbers, protocol parameter and port numbers and identifiers that must be globally unique for the Internet to function. Domain name guidelines:
1. The main part of the name ('yahoo') can only contain the letters a-z, the digits 0-9, and a dash (-).
2. The dash can't be at the beginning or end of a name.
3. Underscore (_) and other special characters are not allowed.
4. The name may not exceed 63 characters, excluding the characters used to identify the Top Level Domain (such as, .com, .biz, .info, .net, .org).
5. Upper and lower-case characters are equivalent: YAHOO.COM is the same as yahoo.com.
6. The end of the name (e.g. '.com') is called the TLD (Top Level Domain). Conventions for TLD's are discussed below.
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