There are two types of protected names:
1. Protected names under all public domains
These names cannot be registered under any public domain, so neither directly under .hu nor under second level public subdomains (e.g., co.hu, info.hu, etc.).
| ac | info | nom | sport | |
| arpa | internet | ns | tm | |
| biz | firm | iskola | nui | web |
| co | ftp | org | www | |
| com | gov* | mx | pp | |
| dns | ind | net | priv |
Although the above names cannot be registered, but under some of them you can register a domain. These are: co.hu, info.hu, org.hu, priv.hu, sport.hu, tm.hu, which are second-level public domains. See the second level subdomain paragraph above for more information.
*Names can also be registered under gov.hu, see the related rules here.
2. Names protected under .hu only
These names cannot be registered as .hu domains, but they can be registered under any of the second level public subdomains.
| accomodation | broker | jacht | pc | turizmus |
| aruhaz | business | kamat | search | voip |
| aukcio | butor | konyv | szabadido | vpn |
| auto | cash | magazin | telek | |
| befektetes | credit | oras | trade | |
| house | orszag | translation | travel |
So names like business.co.hu domain or travel.info.hu can be applied for.