| name | image | development status | planned use | tld | date released | Registry | Responsible | Restrictions | Website |
|---|---|---|---|---|---|---|---|---|---|
| .arpa | Active | Technical | Infrastructure | 1985 | IANA [Internet_Assigned_Numbers_Authority] | Internet Architecture Board [Internet_Architecture_Board] | No domain registrations possible, new subdomains rarely added | Website | |
| .csnet | Active | Technical | Unspecified/other | 1985 | No longer exists | CREN [Corporation_for_Research_and_Educational_Networking] | Not available | Website | |
| .mobi | Developing | Technical | Sponsored | 2005 | Afilias [Afilias] | Nokia [Nokia] / Vodafone [Vodafone] / Microsoft [Microsoft] / Afilias [Afilias] | Adherence to mobile-compatibility style guidelines can be enforced by challenge process | Website | |
| .net | Active | Technical | Generic | 1985 | Verisign [Verisign] | None | None | Website | |
| .onion | Developing | Technical | 2004 | Tor [Tor_(anonymity_network)] | Tor Project | Automatically generated by the Tor client when a hidden service is configured | Website |