Maximum Domain Name Length Active Directory. 63 characters in the maximum length of a label part of domain name separated by dot. What Is The Maximum Domain Name Length.
253 characters is the maximum length of full domain name including dots. Fully qualified domain names FQDNs in Active Directory cannot exceed 64 characters in total length including hyphens and periods. So why cant this longer name be used.
Minimum Domain Name Length Is 3 Characters and Maximum of 63.
For example some embedded print servers wont allow names longer than this so your nicely thought out naming schema goes down the drain. The latter is based on the maximum path length possible with an Active Directory Domain name with the paths needed in SYSVOL and it needs to obey to the 260 character MAX_PATH limitation. The user logon name pre-2000 label is obviously confusing things here. 63 characters in the maximum length of a label part of domain name separated by dot.