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I went to GoDaddy, typed it in, and got "Invalid domain name syntax". A google search revealed that two letter domains are no longer allowed to be registered, and all existing ones will not be renewed.
Why? I read about some technical problem, but it seems that's no longer an issue.
Talk about sending me sky-high and dropping me like a rock.
But, on the flip-side, the whole domain name syntax discussion can get confusing. For example, RFC1035 [ftp.rfc-editor.org] states...
The labels must follow the rules for ARPANET host names. They must
start with a letter, end with a letter or digit, and have as interior
characters only letters, digits, and hyphen. There are also some
restrictions on the length. Labels must be 63 characters or less.
A.A domain name can be up to 63 characters (letters, numbers or combination) long plus the 4 characters used to identify the domain extension (.com, .net, .org). The only symbol character domain names can include is a hyphen (-) although the domain name cannot start or end with a hyphen.
2.1 Host Names and Numbers
The syntax of a legal Internet host name was specified in RFC-952
[DNS:4]. One aspect of host name syntax is hereby changed: the
restriction on the first character is relaxed to allow either a
letter or a digit. Host software MUST support this more liberal
Also, it seems that Internationalized Domain Names (IDN) [ietf.org] comes up quite often when searching for DOMAIN NAME SYNTAX issues. The closest thing I could find to the minimum 3 character-naming convention is in a [idn] naming syntax rules discussion [ops.ietf.org] at IETF.
This stuff is pretty in depth. I'm done for now. Hopefully somebody else can shed some light. It's been fun!
I checked a few registrars and all of them said 'no way' to two letter domains (.com and .co.uk).
Something to do with BT all but owning the UK network me thinks...
Albert, no, AFAIK underscores are not allowed in second level domains.
Two letter .com .net and .org domains were allowed with the Verisign registry. However, upon the transition of the management of .org to PIR (Public Interest Registry) the ICANN agreement placed all two letters domains in a reserved status. Under this agreement no two letters domains can be registered. All two letter domain names that are current and have not been deleted or expired will continue to operate.
All two-character labels shall be initially reserved. The reservation of a two-character label string shall be released to the extent that the Registry Operator reaches agreement with the government and country-code manager, or the ISO 3166 maintenance agency, whichever appropriate.The Registry Operator may also propose release of these reservations based on its implementation of measures to avoid confusion with the corresponding country codes.
It appears I could register a 2 letter domain for .tv, .com, .net, .org and .org.uk. However the domains .co.uk, .me.uk, .info and .biz can only be less than 62 characters or more than 3 characters.
It is also interesting to note that apparantly transfers from one party to another is conisdered acceptable for these domains. However, if they ever expire...