  foo42    => "192.0.2.42"
  bar41    => "192.0.2.41"
  foo43    => "cn-x"
  toa      => "a"
  cdn      => "cdn.net."
  missing  => "missing"
  missing2 => "missing.deeper"
  missing3 => "missing.deeper.yet"
  missing4 => "simple.test"
  chain1 => "chain2"
  chain2 => "chain3"
  chain3 => "chain4"
