| Relationships | Role | Relationship Start | Relationship End |
| Mbd Advisors, L.L.C. | Parent | 11/23/2015 | |
| Kalorama Gp, L.L.C. | Parent | 9/21/2008 | 11/22/2015 |
| Gs Global Infrastructure Partners I Cooperatieve U.A. | Subsidary | 9/21/2008 | |
| Gspx, L.P. | Subsidary | 9/21/2008 | 12/9/2014 |
| Kalorama Carrix Holdings Gp, Llc | Subsidary | 9/21/2008 | 12/9/2014 |
| Kalorama Carrix Cayman Holdings, L.P. | Subsidary | 9/21/2008 | 12/9/2014 |
| Kalorama Carrix Holdings, L.P. | Subsidary | 9/21/2008 | 12/9/2014 |