tl;dr: control the domains you use
the domain rain.net was on since the early '90s. it used to be the
domain of the isp which became verio which became ntt. lots of local
portland folk had subdomains, email, ...
well, with zero notice, ntt seems to have flogged it off to someone who
does not give a damn, and a lot of folk's email and so forth is dead
dead dead. packets and smtp falling on the floor.
a friend once gave me a tee shirt which says "god helps those who own a
majority share." the corollary is that the goddess helps those who own,
or otherwise control, the domains on which they rely.