Host Name Guidelines

Host names can contain from 2 to 63 alphanumeric uppercase or lowercase characters (a-z, A-Z, 0-9). Fully qualified host names (for example, mysys.example.com) can contain a maximum of 254 characters. Each component of the domain name can contain up to 63 characters, and components must be separated by periods.

Host names must begin with a letter.

Hyphens ( - ) are permitted in host names.

Underscores ( _ ) are not permitted in host names.

Periods ( . ) are permitted in fully qualified domain names.

Before deciding upon a host name, consult with your site administrator to make sure you select a unique name that adheres to your corporate host naming conventions.