Test eduction

A host name. For example, www.myhost.com.
An IPv4 IP address. For example, 127.0.0.1.
An IPv6 IP address. For example, 1234:5678:90AB:CDEF.
An IPv4-mapped IP address. Any IP address.
Host address.
 For example, www.myhost.com or 192.231.21.2.
E-mail address.
 E-mail address with mailto: prefix.
 HTTP or HTTPS address.
file:// address.
FTP address.
news:// address.
Telnet address.
Gopher address