SIRIUS XM RADIO INC. AND SUBSIDIARIES
EXHIBIT 21.1
Subsidiaries
| Satellite CD Radio, Inc. |
State of Delaware | |
| Sirius Asset Management Company LLC |
State of Delaware | |
| Sirius Entertainment Promotions LLC |
State of Delaware | |
| Spend LLC |
State of Maryland | |
| Earth Station Ecuador Cia. Ltda. |
Quito, Ecuador | |
| XM Satellite Radio Holdings Inc. |
State of Delaware | |
| XM Satellite Radio Inc. |
State of Delaware | |
| XM Equipment Leasing LLC |
State of Delaware | |
| XM EMall Inc. |
State of Delaware | |
| XM Radio Inc. |
State of Delaware | |
| XM Innovations Inc. |
State of Delaware | |
| XM Capital Resources Inc. |
State of Delaware | |
| XM 1500 Eckington LLC |
State of Delaware | |
| XM Investment LLC |
State of Delaware | |
| Effanel Music, Inc. |
State of New York | |
| Interoperable Technologies LLC |
State of Delaware | |
| Satellite Public Radio Inc. |
Washington, D.C. |