If you're trying to host a Facebook page, FP requires a https:// address. To get that, you'll need to pay your hosting company for an SSL certificate. If you pay extra for a wildcard (*) certificate then subdomains on that domain will also be covered by that SSL certificate. So you could have facebookpage1.ourcompany.com and facebookpage2.ourcompany.com both covered by the ourcompany.com certificate. Hope that helps.