An alias given to a computer on a TCP/IP network to identify it on the network. Host names are a friendlier way of identifying TCP/IP hosts than IP addresses, and host names can be resolved into IP addresses by host name resolution using a DNS server or hosts files.
Host names can include the characters a–z, A–Z, 0–9, period, and dash (-). To ensure full compatibility with the Domain Name System (DNS), do not use any other special characters in host names.
To find out the host name of a computer running Windows NT or Windows 2000, type hostname at the command prompt.