How do I exactly test my referrer...CPA-R and iFrame?

I've set up a site with an iframed email submit offer, and I wanna make sure that my referrer is 100% faked to avoid the banhammer as I've worked on this everyday for the past week and have limited networks.

Here's a quick overview of my setup:

I have a BH site with a main page that has a link to the iframed email submit offer. Visitors click the link and are brought to the iframed offer. They fill in their email, and are redirected back to the main page upon clicking "submit" to avoid seeing the second page of the offer.

I have my CPA-R affiliate link with my magic number placed inside the iframe code.

I have a WH site set up with CPA-R.

My Q is...how do I test to see if my referrer is faked and appears to come from my WH site? I've done a search but can't find anything, nor anything up to date.

Any brief step-by-step guides or advice will be helpful, and will be appreciated.

you can use this php code to see referer

echo $_SERVER['HTTP_REFERER'];

Or you let CPA-R redirect to a page like this:

look in your cpanel recent visiotrs, shows referrer