- 174 – Cogent
- 209 – CenturyLink (formerly Qwest)
- 701 – Verizon (formerly MCI / Worldcom / UUNet)
- 812 – Rogers
- 852 – Telus
- 1239 – Sprint
- 2828 – XO Communications
- 2914 – NTT
- 3356 – Level 3
- 3549 – Level 3 (formerly Global Crossing)
- 3561 – Savvis
- 6939 – Hurricane Electric
- 7018 – AT&T
- 8075 – Microsoft
- 12182 – InterNap
- 16467 – NextWeb
- 17111 – Covad
- 22773 – Cox
Layer 77 