We check this website, now vlabcenter.com is up and dont blocked for our system and other users of the Internet.
So, answer to question: Is vlabcenter Down Right Now? - NO! vlabcenter is up!
If you have problem with access to site vlabcenter, and domain vlabcenter.com is not avalible.
Clear browser cache and/or try other web browser
(Chrome, Firefox or Safari).