UK reference URIs

Greetings and salutations,

Several weeks ago I've noticed that reference.data.gov.uk was not 
resolving. It still appears to be the case. Is this a temporary issue?

Same goes for education.data.gov.uk - although this goes back a year or 
two even. I've reported this issue back then, but haven't heard back.

It is sad to see these great resources drop, especially the reference 
URIs in my opinion, because they fit really well in context of 
statistical data.

If anyone has any insiders on this or would like to comment on design 
considerations going forward, that'd be great.

-Sarven