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