Re: UTF-8 characters in domain names
Re: UTF-8 characters in domain names
- Subject: Re: UTF-8 characters in domain names
- From: Tomas Zahradnicky <email@hidden>
- Date: Thu, 30 Jan 2003 08:14:43 +0100
Hello Philip.
I'm having trouble actually finding a website whose domain name
contains UTF-8 characters. UTF-8 domain names have gone live on the
internet, have they not?
I don't think so. UTF-8 domain names shouldn't exist. If you look at
RFC 821, it stricly defines what the domain name is and what
characters can contain --- even this is SMTP RFC. Even domain names
that begin with number such as 10000000.cz should not exist and SMTP
software that strictly sticks with RFC 821 will probably not deliver
e-mail to such domains telling you you specified invalid domain name.
Briefly said, N is the length of domain name element:
char 1 must be {A|B|C|...|Z} or {a|b|c|...|z}
char 2 though N-1 must be {A|B|C|...|Z}, {a|b|c|...|z}, number or dash
char N must be {A|B|C|...|Z}, {a|b|c|...|z} or number
UTF8 domain names SHOULD NOT EXIST since characters > 127 are not
ASCII characters so they are not allowed.
All I really need is someone to respond with an actual (working and
with a website I can visit, preferably) domain name that contains
UTF-8 characters, so that I can see how my app (which has a DNS
lookup feature) deals with it. I just don't want it to choke when a
UTF domain name is returned obviously. I have no idea if that has
even gone live yet and if it has, how many people are really using
it.
Thanks.
- Philip
I think you really don't need to bother with such thing since it does
not exist. Correct me someone, please, if I'm wrong.
-Tomas
--
# Tomas Zahradnicky, Jr
# The Czech Technical University
# Dept of Computer Science, FEE-CTU Prague
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