oasis.connectedcommunity.org seems to be down/broken

Hey folks,
 
In our documentation we're linking to the MQTT SN specification on the OASIS website.
Our link is https://www.oasis-open.org/committees/document.php?document_id=66091
 
And it looks like this is returning 404 status codes at the moment:
Site 'oasis.connectedcommunity.org' not found
Unable to locate a site configured for that domain.

The same happens with links that are indexed by Google, e.g. search for "mqtt sn site:oasis-open.org" which returns https://www.oasis-open.org/committees/download.php/66091/MQTT-SN_spec_v1.2.pdf as search result. This gives the same 404 error.
 
Same for your own search and results, e.g. https://www.oasis-open.org/?s=mqtt+sn with the same link as Google.
 
Could you please have a look if that's something on your side?
 
Kind regards,
David Sondermann