🚀 go-pugleaf

I was quite sure that underscores (_), ascii dec(95) were not allowed
in host and domain names. If memory serves, BIND in its later versions
enforces this (unless explicitly overwritten). I'm not aware of
an RFC that relaxed the host name requirements later than RFC 1123
(which relaxed the rules such that a non-toplevel domain part may
begin with a digit). But then, there are a lot of RFCs issued these
days, and I don't read them all :-)

But there seem to be three second-level domains under .ch:

   be_first.ch         Wonderman Cato Johnson AG, Zurich
   royal_agency.ch     Royal Agency SA, Grolley
   sli_ag.ch           SLI Consulting AG, Frauenfeld

Comments?

 - Andi Karrer