IsDomain Function

Indicates if a Host address represents a valid Domain name.

Pascal

function IsDomain(
    const S: String
): Boolean;

Parameters

Parameters	Description
S	Domain name to be validated.

Returns

Boolean - True when not an IP Address or Top-Level Domain Name.

Description

IsDomain is a Boolean function that indicates if the value in S represents a Domain name. The value is considered a Domain name when it does not contain a valid IP address in dotted-decimals format, and it is not a Host name or Top-Level Domain name.