80 Domain Name Maximum Length New

The latter is based on the maximum path length possible with an active directory domain name with the paths needed in sysvol and this needs to obey to the 260 character max path limitation.
Domain name maximum length. It s not a law or penalty that a domain should be less than or equal to 20 characters. The full domain name may not exceed the length of 253 characters in its textual representation. Here are some interesting statistics related to domain name length.
Internet co uk may not be more than sixty four characters long in total including the sld and tld. A domain name can be as long as 253 characters all told but it s rare that one is. So i assume it s safe to use 255 length varchar to save domain name while using sql db.
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. Now if you search around many have tried to register domain names with these 63 characters and claim to have the longest domain name. The maximum number of characters you can have in a website address left of the is 63 characters.
If all your e mail addresses are mapped to a top level domain name with mx records and mta address rewriting assuming a more reasonable username alias length limit of 16 you get a maximum domain name length of 23 bytes for a 40 byte e mail address like useruseruseruser not so long example com. The maximum lengths are hash defined in lmcons h. Even if you want it is difficult to find a 63 character word which makes any sense.
For more tips on name selection view our guide to choosing domain names or start your domain name search. 63 characters in the maximum length of a label part of domain name separated by dot. The maximum length of the host name and of the fully qualified domain name fqdn is 63 bytes per label and 255 characters per fqdn.
What is the maximum domain name length. Lukas liesis jun 16 17 at 7 38. We intend to allow longer domain names where the third level domain has a maximum of 63 characters.