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