| Relationships | Role | Relationship Start | Relationship End |
| Gs Global Infrastructure Partners I, L.P. | Parent | 9/21/2008 | 12/9/2014 |
| Gs Infrastructure Carrix Holdings, L.P. | Parent | 9/21/2008 | 12/9/2014 |
| Gs Institutional Infrastructure Partners I, L.P. | Parent | 9/21/2008 | 12/9/2014 |
| Kalorama, L.P. | Parent | 9/21/2008 | 12/9/2014 |
| Gspx Carrix Llc | Parent | 9/21/2008 | 12/9/2014 |