(from "registry.com":)
The following is a list of rules of each registry. Please note that this list
may not be a complete list and that each registry may adopt additional rules
from time to time.
Domain Names have a variety of basic rules:
GENERAL EXTENSIONS
* .com, .net and .org domain names exceeding a total of 26 characters are
supported by most web browsers. However, certain web browsers, email programs
and other Internet related applications may not support domain names over 26
characters.
Country-Specific Extensions
.AC and .SH Domain Names
- .SH - St. Helena, to be used for both commercial and personal sites
- .AC - Ascension Island, to be used for both commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have at least 3 characters, but less than 23, not including .AC and .SH
.AS Domain Names
- .AS - American Samoa, to be used for commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have at least 3 characters, but less than 23, not including .AS
.BE Domain Names
- .BE - Belgium, to be used for commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have at least 2 characters, not including .BE
.CA Domain Names
- .CA registrants must meet Canadian presence requirements as defined by CIRA (Canadian Internet Registration Authority)
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Length. Domain names must be between 2 and 50 characters long.
.CC Domain Names
- .CC - Cocos (Keeling) Islands, to be used for commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Cannot contain all numbers
- Must have at least 3 characters, but less than 47, not including .CC
.CO.IL and ORG.IL Domain Names
- .CO.IL - Israel, to be used for commercial and personal sites
- .ORG.IL - Israel, to be used for commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have between 3 and 62 characters, not including .IL
- No more than 10 domain names may be registered by any individual or organization.
.CO.UK and .ORG.UK Domain Names
- .CO.UK - United Kingdom TLD used for both commercial and personal sites
- .ORG.UK - United Kingdom TLD used for both commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have at least 3 characters, but less than 23, not including .CO.UK and .ORG.UK
.DE Domain Names
- .DE - Germany, to be used for commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have at least 3 characters, but less than 64, not including .DE
.DK Domain Names
- .DK - Denmark, to be used for commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have less than 23 characters, not including .DK
.FM Domain Names
- .FM - Micronesia, to be used for commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have less than 23 characters, not including .FM
.JP Domain Names
- .JP - Japan, to be used for commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have at least 3 characters, but less than 63, not including .jp
.KZ Domain Names
- .KZ - Kazakstan, to be used for commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have less than 23 characters, not including .KZ
.LT Domain Names
- .LT - Lithuania, to be used for commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have at least 3 characters, but less than 23, not including .LT
.MS, .VG, .TC, .GS and .TF Domain Names
- .MS - Montserrat, to be used for both commercial and personal sites
- .VG - British Virgin Islands, to be used for both commercial and personal sites
- .TC - Turks and Caicos Islands, to be used for both commercial and personal sites
- .GS - South Georgia & South Sandwich Islands, to be used for both commercial and personal sites
- .TF - French Southern Territories, to be used for both commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have less than 23 characters, not including .MS, .VG, .TC, .GS and .TF
.NZ Domain Names
- .CO.NZ - New Zealand, intended organizations pursuing commercial aims & purposes
- .NET.NZ - New Zealand, intended organizations or services providers related to the NZ internet
- .ORG.NZ - New Zealand, intended for non-profit organizations
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have less than 23 characters, not including .CO.NZ, .ORG.NZ, and .NET.NZ
.PH Domain Names
- .PH and .COM.PH - Philippines, to be used for commercial and personal sites.
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have as few as three and as many as 62 characters, not including .com.ph or .ph
.RO Domain Names
- .RO, .COM.RO - Romania, to be used for commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have less than 23 characters, not including .RO
.ST(SiTe) Domain Names
- .ST(SiTe) - São Tomé and Principe, to be used for commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have as few as one and as many as 23 characters, not including .ST
.TO Domain Names
- .TO - Tonga, to be used for commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have less than 23 characters, not including .TO
.TV Domain Names
- .TV - Tuvalu, to be used for commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have less than 63 characters, not including .TV
.US Domain Names
- .US - to be used by U.S. citizens and residents, U.S. corporations and other U.S. organizations and organizations with a presence within the United States
- Use only letters, numbers, or hyphen ("-")
- Domain names cannot begin or end with a hyphen
- Domain names must be longer than 2 characters and cannot exceed 63 characters (this does not include the extension)
.WS Domain Names
- .WS - WebSite, to be used for commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- .WS domains registered through Register.com must have as few as four and as many as 63 characters, not including the .WS extension
.ZA Domain Names
- .CO.ZA - South Africa, to be used for commercial and personal sites
- Use only letters, numbers, or hyphen ("-")
- Cannot begin or end with a hyphen
- Must have less than 23 characters, not including .ZA
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