Incase you are dependant on ALTER.NET's SFO ATM link
its having problems. Thus you may not be able to get
to A, J, L and M root servers or

No other info is available at this time.

jmbrown, A, & J perhaps.
I don't know why you lump L and M in this list.

L and M exhibited the same symptoms as A and J,
otherwords when doing a trace route to these servers
I received a ICMP Time Exceeded message from the
ALTER.NET router in SFO.

At the time of the outage I gronked a perl script to
read my hints file and ran a trace to those that
were not pingable. While crude it at least showed
those servers that were having problems. This is
how I gen'd the list of "problem" machines.

Hope this answers your question......
John M. Brown