CNN has been reporting on the MCI fiber cut in Manhattan. Since various
other carriers lease each other's facilities, it has also been affecting
worldcom, uunet and others. Sprint and AT&T claim they haven't been
affected. The last report I got around 6pm, MCI hadn't located the
actual fiber cut or cause; only the general vicinity. I have not found
an official statement on this outage on the MCI web site.
I had posted the following a couple of weeks ago to the
outage-discuss@academ.com mailing list, but other network operators may
be interested in methods for keeping their customers informed about
operational issues (besides relying on CNN).