| American Communication Services of Colorado Spring | e.spire | Herndon, VA | Inactive |
| American Communication Services of Columbia, Inc. | e.spire | Herndon, VA | Inactive |
| American Communication Services of Columbus, Inc. | e.spire | Herndon, VA | Inactive |
| American Communication Services of Corpus Christi, | e.spire | Herndon, VA | Inactive |
| American Communication Services of D.C., Inc. | e.spire | Herndon, VA | Inactive |
| American Communication Services of Dallas, Inc. | e.spire | Herndon, VA | Inactive |
| American Communication Services of El Paso, Inc. | e.spire | Herndon, VA | Inactive |
| American Communication Services of Fort Worth, Inc | e.spire | Herndon, VA | Inactive |
| American Communication Services of Greenville, Inc | e.spire | Herndon, VA | Inactive |
| American Communication Services of Irving, Inc. | e.spire | Herndon, VA | Inactive |
| American Communication Services of Jackson, Inc. | e.spire | Herndon, VA | Inactive |
| American Communication Services of Jacksonville, I | e.spire | Herndon, VA | Inactive |
| American Communication Services of Kansas City, In | e.spire | Herndon, VA | Inactive |
| American Communication Services of Las Vegas, Inc. | e.spire | Herndon, VA | Inactive |
| American Communication Services of Lexington, Inc. | e.spire | Herndon, VA | Inactive |
| American Communication Services of Little Rock, In | e.spire | Herndon, VA | Inactive |
| American Communication Services of Louisiana, Inc. | e.spire | Herndon, VA | Inactive |
| American Communication Services of Louisville, Inc | e.spire | Herndon, VA | Inactive |
| American Communication Services of Maryland, Inc. | e.spire | Herndon, VA | Inactive |
| American Communication Services of Mobile, Inc. | e.spire | Herndon, VA | Inactive |
| American Communication Services of Montgomery, Inc | e.spire | Herndon, VA | Inactive |
| American Communication Services of Pima County, In | e.spire | Herndon, VA | Inactive |
| American Communication Services of Rio Rancho, Inc | e.spire | Herndon, VA | Inactive |
| American Communication Services of Roanoke, Inc. | e.spire | Herndon, VA | Inactive |
| American Communication Services of San Antonio, In | e.spire | Herndon, VA | Inactive |
| American Communication Services of Savannah, Inc. | - | Herndon, VA | Inactive |
| American Communication Services of Shreveport, Inc | e.spire | Herndon, VA | Inactive |
| American Communication Services of Spartanburg, In | e.spire | Herndon, VA | Inactive |
| American Communication Services of Tulsa, Inc. | e.spire | Herndon, VA | Inactive |
| American Communication Services of Virginia, Inc. | - | Herndon, VA | Inactive |
| American Connect Services, LLC | - | Cape Canaveral, FL | Active |
| American Datapath, Inc | - | Sheridan, CO | Inactive |
| American Fiber Network, Inc. | American Fiber Network, Inc | Overland Park, KS | Inactive |
| American Fiber Systems of Georgia, Inc. | - | Rochester, NY | Inactive |
| American Fiber Systems, Inc. | - | Louisville, CO | Inactive |
| American Lightwave Communications, Inc. | American Telephone Network | Houston, TX | Inactive |
| American Money Corporation | Quick Connect | Indianapolis, IN | Inactive |
| American Warrior Networks, LLC. | - | Palm Beach Gardens, FL | Inactive |
| Ameritel, Inc. | - | Northridge, CA | Inactive |
| Antilles Wireless, LLC | USA Digital and Cable USA | Kearney, NE | Active |
| Apogee Telecom, Inc. | Aegis | Austin, TX | Inactive |
| Apollo Communications, LLC | - | Colorado Springs, CO | Inactive |
| Applied Communications Technology, Inc. | - | Arapahoe, NE | Active |
| Applied Technology Solutions, Inc. | - | Davie, FL | Inactive |
| Arialink Telecom, LLC | - | Denver, CO | Active |
| Aries Network, Inc. | - | CARLSBAD, CA | Active |
| Arizona Dialtone, Inc. | - | Tempe, AZ | Inactive |
| Arlington County, Virginia | ConnectArlington | Arlington, VA | Inactive |
| Armstrong Telecommunications, Inc. | - | Butler, PA | Active |
| Arrival Communications, Inc. | TelePacific Communications | Los Angeles, CA | Active |