whois.ps1

<#
.SYNOPSIS
Domain name WhoIs
.DESCRIPTION
Performs a domain name lookup and returns information such as
domain availability (creation and expiration date),
domain ownership, name servers, etc..

.PARAMETER domain
Specifies the domain name (enter the domain name without http:// and www (e.g. power-shell.com))

.EXAMPLE
WhoIs -domain power-shell.com 
whois power-shell.com

.NOTES
File Name: whois.ps1
Author: Nikolay Petkov
Blog: http://power-shell.com
Last Edit: 12/20/2014

.LINK
http://power-shell.com
#>
Function WhoIs {
param (
                [Parameter(Mandatory=$True,
                           HelpMessage='Please enter domain name (e.g. microsoft.com)')]
                           [string]$domain
        )
Write-Host "Connecting to Web Services URL..." -ForegroundColor Green
try {
#Retrieve the data from web service WSDL
If ($whois = New-WebServiceProxy -uri "http://www.webservicex.net/whois.asmx?WSDL") {Write-Host "Ok" -ForegroundColor Green}
else {Write-Host "Error" -ForegroundColor Red}
Write-Host "Gathering $domain data..." -ForegroundColor Green
#Return the data
(($whois.getwhois("=$domain")).Split("<<<")[0])
} catch {
Write-Host "Please enter valid domain name (e.g. microsoft.com)." -ForegroundColor Red}
} #end function WhoIs