Updated 2019-02-06 11:20 US/EST: The outage has been resolved.
We are aware that internet traffic into and out of the Charlottesville offices of NRAO (including NAASC, the North American ALMA Science Center) is currently down. Internal inter-site traffic is not affected, nor is access to archive.nrao.edu. ALMA Science portal users should use the European or East Asian portals instead for now.