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Domain Names Forum

    
63 characters
includes http:// or not?
eljefe3




msg:687342
 9:19 am on Apr 12, 2001 (gmt 0)

Searched through old threads but couldn't find the answer to the question as to whether the http:// is counted as part of the 63 characters or not in a domain name. Anyone have the info on this? Thanks.

 

Brett_Tabke




msg:687343
 9:57 am on Apr 12, 2001 (gmt 0)

No they do not.

Mike_Mackin




msg:687344
 10:27 am on Apr 12, 2001 (gmt 0)

I don't think that they count the www either.

eljefe3




msg:687345
 12:56 pm on Apr 12, 2001 (gmt 0)

Great,

That nice long descriptive 57 character domain name will be perfect then for those directory submissions :).

Xoc




msg:687346
 9:56 pm on Apr 16, 2001 (gmt 0)

The http: does not count. However, the technical limit on a domain name looks to be 255 characters, but each individual part separated by periods has a limit of 63 characters, at least based off what I could find among the Internet RFCs. Go to [ietf.org...] to find the RFCs. If I read this right, you could use [[i]60charactersubdomain[...] These excerpts come from RFC1034:

To simplify implementations, the total number of octets that represent a
domain name (i.e., the sum of all label octets and label lengths) is
limited to 255.

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.

seth_wilde




msg:687347
 10:19 pm on Apr 16, 2001 (gmt 0)

I think one of the biggest limitations of the 63 character domain names is that some versions of netscape can only handle 59 characters.....

Xoc




msg:687348
 10:25 pm on Apr 16, 2001 (gmt 0)

Realize that all RFCs are the spec. Software gets written to the spec. Software frequently has bugs when you get to boundary conditions. So if you try the domain that I mentioned above, it might work. But each machine it passes through may have a bug where it doesn't pass through. You could lose access half the world's machines if that bug does exist.

Netscape has so many bugs compared to the IETF and W3C specs, that you really have to try things to see if they will work in specific versions of Netscape.

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