- Top level domain.name
- invalid
- Top level domain.introduced
- 1999
- Top level domain.type
- Reserved top-level domain
- Top level domain.status
- Reserved to prevent conflict and confusion
- Top level domain.intendeduse
- When necessary to show an address guaranteed to be invalid
- Top level domain.actualuse
- Session Initiation Protocol, for identity protection; address munging e.g. on Usenet