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