| urlHTTP | HTTP Address - normal Web Address. |
| urlMailTo | MailTo Address - normal Email Address. |
| urlFTP | FTP Address - normal File Transfer Address. |
| urlHTTPS | HTTPS Address - secure Web Address. |
| urlNews | News Address - normal News Address. |
| urlNNTP | News Address - News Address using NTTP. |
| urlTelenet | Telnet Address - Interactive Session. |
| urlGopher | Gopher Address - Gopher Protocol. |
| urlWAIS | WAIS Address - Wide Area Information Server Address. |
| urlFile | File Address - a file or registered file type. |
| urlProspero | File Address - Prospero Directory Services Protocal. |