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