We check this website, now 480253.8b.io is up and dont blocked for our system and other users of the Internet.
So, answer to question: Is 480253 Down Right Now? - NO! 480253 is up!
If you have problem with access to site 480253, and domain 480253.8b.io is not avalible.
Clear browser cache and/or try other web browser
(Chrome, Firefox or Safari).