Ah big ones.
Sinhost.com company: Southfield, MI
Sinhost servers: Southfield, MI
(Brad doesnt mess around apparently.)
JupiterHosting.com Company: Rocklin, CA ...but special cirumstances here I think.
JupiterHosting.com Servers: Palo Alto, CA (in the PAiX!? Woot.) I think ~100 peering providers in that datacenter. crazy.