360 Networks/Group Telecom
Aliant
Bell Canada
Citizens/Frontier
CenturyTel
Cogent
FiberNet Telecom Group/Zayo
Global Crossing
Level 3
Microcell
MTS Allstream
NTS Communications
Ontario Lottery Corp
PAETEC
Qwest
Rogers Telecom
SaskTel
TELUS
Verizon