Yes we do!
Chicago Metro: Ceiley Datacenter in South Bend, IN on our own network
Test Address: in.byteonsite.com Test File: http://in.byteonsite.com/100MBtest.zip
New York Metro: Dupont Fabros Datacenter in Piscataway, NJ with Choopa as our network partner.
Test Address: nj.byteonsite.com Test File: http://nj.byteonsite.com/100MBtest.zip
Phoenix: PhoenixNAP Datacenter in Phoenix, AZ with IOFlood as our network partner.
Test Address: az.byteonsite.com Test File: http://az.byteonsite.com/100MBtest.zip