20 Windows Domain Name Max Length Update

What is the maximum domain name length.

Windows domain name max length. 15 chars i wonder if anyone knows what the limit is either by standard or by the implementation within both windows 2003 and windows 2008 domains. In windows 2000 and in windows server 2003 the maximum host name and the fqdn use the standard length limitations that are mentioned earlier with the addition of utf 8 unicode support. On msdn no length is given and neither in rfc 822.

That s an awfully long url and we don t recommend choosing such a lengthy domain in any circumstances. Before windows 95 windows only allowed file names that were eight characters long with a three character file extension commonly known as an 8 3 filename. This way i can store the values in a database with the correct length.

Why would it need 16 or 17 characters. The maximum length of the dns name is 63 bytes per label. If u use windows for dns.

63 letters 63 letters 63 letters 62 letters the documentation says returns error invalid name if the dns name is longer than 255 octets. The maximum length of the dns name is 63 bytes per label. Now before i revert to the domain username that has a defined length samaccountname is less than 20 chars netbios domain name is max.

A customer didn t understand why the dnsvalidatename was rejecting the following string. This is spelled out in rfc 1035 section 2 3 4. What is the maximum domain name length.

Domain username 21 characters domainnamemaxlength. Want perhaps but not need. For more tips on name selection view our guide to choosing domain names or start your domain name search.