Domain Name Max Length

The 15 character maximum referred to is the maximum length of the netbios name of a computer.

Domain name max length. Richard mueller mvp directory services. The samaccountname will be the netbios name with a trailing character so the maximun samaccountname is 16 characters. What is the maximum domain name length.

Here are some interesting statistics related to domain name length. The common name the value of the cn attribute can be up to 64 characters. A domain name can be as long as 253 characters all told but it s rare that one is.

The maximum lengths are hash defined in lmcons h. In the version of this file i have on my xp machine installed as part of visual studio 8 dnlen 15 and unlen 256. Administrators should keep hostname length excluding domain within 19 bytes and domain name length excluding hostnames within 23 bytes.

The maximum number of characters you can have in a website address left of the is 63 characters. According to a report from domain marketplace sedo during 2011 the most popular length for any name traded on the marketplace was 8 characters the longest was 42 characters. Code should deal with hostnames up to 255 bytes long.

Nevertheless i didn t think anything of it until my domain character length criterion of 20 characters was violated realizing the domain was 25 characters long. It s not a law or penalty that a domain should be less than or equal to 20 characters. 63 characters the maximum length of the host name and of the fully qualified domain name fqdn is 63 bytes per label and 255 bytes per fqdn.

Hostnames can be as long as 255 bytes some systems may limit them to 64.