Exhibit 21.1
| Name | Ownership Percentage | Jurisdiction of Organization | ||
| Tropical Communications, Inc. | 100% | Florida | ||
| Rives-Monteiro Engineering, LLC | 49% | Alabama | ||
| Rives-Monteiro Leasing, LLC | 100% | Alabama | ||
| T N S, Inc. | 100% | Illinois | ||
| ADEX Corporation | 100% | New York | ||
| ADEXCOMM Corporation | 100% | Florida | ||
| ADEX Puerto Rico LLC | 100% | Puerto Rico | ||
| AW Solutions, Inc. | 100% | Florida | ||
| AW Solutions Puerto Rico, LLC | 100% | Puerto Rico | ||
| Integration Partners - NY Corporation | 100% | New Jersey | ||
| RentVM, Inc. | 100% | New Jersey | ||
| VaultLogix, LLC | 100% | Delaware | ||
| Nottingham Enterprise LLC | 40% | Oklahoma | ||
| SDN Essentials, LLC | 100% | California | ||
| Data Protection Services, LLC | 100% | Delaware | ||
| U.S. Data Security Acquisition, LLC | 100% | Delaware |