Two people have called me in the last few minutes to ask if I'm having internet problems - on in Nashville on AT&T and the other in Memphis - not sure what carr

Two people have called me in the last few minutes to ask if I'm having internet problems - on in Nashville on AT&T and the other in Memphis - not sure what carrier. My Comcast connection just went down for about five minutes while I was typing that... but my open ssh connections, one to a server in Nashville, one to one in Fremont at Hurricane Electric, and one to Rackspace in Dallas - still worked.