That's what I'm seeing where it's saying offline-that's without the www bit (I typed it in but the site checker doesn't require it apparently)

The latest from these scumbags: instaflowgram.com
I just went to their web site and curiously (and probably by mistake) they have uploaded an old web site to their new URL because it shows their old address and phone number (101st Ave SE, Kent, WA 98030, 253-243-1149) rather than the latest one (18 Richmond St, Albany, NY, 516-926-1772), but the footer of the web page still reads "MG-Dot Advertising".

It's actually a shame that registering a domain is so inexpensive these days. It gives creeps like these the ability to set up their scam sites on dozens of domains without costing them a lot of cash. Here's their two latest: serp-booster.com and newseopackages.com (they set up newseopackages.net a while back).
I just visited both sites to confirm that they are indeed live. Both show MG-Dot Advertising as the business name. Phone number 516-926-1772 and address, 18 Richmond St, Albany, New York, are the usual.
Curiously, the newseopackages.com also shows the name "Conversion SEO" (one of their other domain names) and uses that as the <title> tag for the page. Probably a cut-and-paste error on the part of the scammers hurriedly setting up another new web site. It also states that they're a Google Partner, which is simply a lie.

First one: Out of China and been up 29 days with high number of suspicious sites on the server
Second one: Same as above in all respects
In fact, they're ON the same server

Yep. I show them both at 118.144.94.80 – one of those sleazy (even by Chinese standards) hosts that doesn't even list an abuse address. "serp-booster.com" domain is registered in the Bahamas but with anonymizing to conceal the criminals behind it. "newseopackages.com" is through a Chinese registry but also with anonymizing.