Host vpscache.avast.com does not exist anymore??

Hello , in the last two days our internal mirror failed to update its definitions, thus our client pcs remained to the last mirrored definitions, which are from 180425-6

I have investigated the mirror log and found out that when it contacts the host http://vpscache.avast.com/iavs5x/
the host name vpscache.avast.com is not resolved and thus the connection fails.
I have checked with three external DNS resolvers and all three fail to resolve it.

Please let us know ASAP what’s happening and preventing our protection!!

HELP!

Kind regards,

Michele Pensotti