I monitor a LOT of sites and Google issues GA codes with UA-XXXXXX-Z, where the Z is an increasing number.
However when I looked at the source code of the running website I was SHOCKed to see the following message.
<!-- Google Analytics tracking code not shown because users over level 8 are ignored. -->
This is simply NOT True. I have hard coded websites with higher numbers and I get analytic information on them.