| SBC ADVANCED SOLUTIONS, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Aug 16, 1999 | Withdrawn |
| USINTERNETWORKING, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Oct 21, 1999 | Withdrawn |
| SBC ASSET MANAGEMENT, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Nov 2, 1999 | Active |
| AT&T SERVICES, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Mar 13, 2000 | Active |
| CREDITWATCH SERVICES, LIMITED PARTNERSHIPLocation not reported, CT · Cancelled | Location not reported, CT | Partnership | Apr 20, 2000 | Cancelled |
| USI CHARITABLE FOUNDATION, INCORPORATEDLocation not reported, CT · Revoked | Location not reported, CT | Corporation | Aug 28, 2000 | Revoked |
| SUMMIT GLOBAL PARTNERS OF TEXAS, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Apr 6, 2001 | Withdrawn |
| ASI LEASING (GP) COMPANYLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Nov 8, 2001 | Withdrawn |
| ASI LEASING (LP) COMPANYLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Nov 8, 2001 | Withdrawn |
| SBCSI PURCHASING & LEASING LIMITED PARTNERSHIPLocation not reported, CT · Revoked | Location not reported, CT | Partnership | Nov 14, 2003 | Revoked |
| SBC INTERNET SERVICES, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Jan 18, 2005 | Withdrawn |
| SBC LONG DISTANCE, LLCLocation not reported, CT · Active | Location not reported, CT | LLC | May 6, 2005 | Active |
| AT&T ENTERPRISE SERVICES, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Nov 10, 2005 | Withdrawn |
| AT&T BROADBAND SERVICES PURCHASING AND LEASING, LLCLocation not reported, CT · Cancelled | Location not reported, CT | LLC | Oct 26, 2006 | Cancelled |
| AT&T TELEHOLDINGS, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Nov 2, 2006 | Withdrawn |
| CLEARVIEW ELECTRIC INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Jun 4, 2007 | Withdrawn |
| LES HOTEL LESSEE, LLCLocation not reported, CT · Cancelled | Location not reported, CT | LLC | Jun 7, 2007 | Cancelled |
| VEHICLE ACCEPTANCE CORPORATIONLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Mar 27, 2008 | Withdrawn |
| BELLSOUTH COMMUNICATION SYSTEMS, LLCLocation not reported, CT · Cancelled | Location not reported, CT | LLC | Sep 21, 2009 | Cancelled |
| AG&E ASSOCIATES, LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Oct 23, 2009 | Active |
| AMBIT CONNECTICUT, LLCLocation not reported, CT · Dissolved | Location not reported, CT | LLC | May 20, 2010 | Dissolved |
| AMBIT MARKETING LIMITED PARTNERSHIPLocation not reported, CT · Cancelled | Location not reported, CT | Partnership | Apr 8, 2011 | Cancelled |
| WAYPORT, LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Sep 3, 2013 | Active |
| AT&T SUPPLY I, LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Feb 7, 2014 | Active |
| AT&T DATACOMM, LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Jun 23, 2015 | Active |
| BROWN AND RIDING INSURANCE SERVICES, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Aug 24, 2016 | Active |
| DKSH USA, LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Dec 8, 2017 | Active |
| AVIGILON USA CORPORATIONLocation not reported, CT · Active | Location not reported, CT | Corporation | Jan 8, 2019 | Active |
| AT&T INVESTMENT OPERATIONS I, LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Jul 7, 2020 | Active |
| AT&T INVESTMENT OPERATIONS II, LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Jul 14, 2020 | Active |
| EMBURSE, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Jun 17, 2022 | Active |
| Clarity Quest LLCLocation not reported, CT · Active | Location not reported, CT | LLC | May 17, 2023 | Active |
| AMP Connecticut, P.C.Location not reported, CT · Active | Location not reported, CT | Corporation | May 23, 2023 | Active |
| AMP East, LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Jun 27, 2023 | Active |
| AT&T ENTERPRISES, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Dec 19, 2023 | Withdrawn |
| AT&T ENTERPRISES, LLCLocation not reported, CT · Active | Location not reported, CT | LLC | May 28, 2024 | Active |
| AT&T WIRELINE HOLDINGS, LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Oct 28, 2024 | Active |
| AT&T CONNECTED LIFE, LLCLocation not reported, CT · Active | Location not reported, CT | LLC | May 2, 2025 | Active |
| AMP CS Holdings II, LLCLocation not reported, CT · Active | Location not reported, CT | LLC | Dec 30, 2025 | Active |
| AG&E ASSOCIATES, L.L.C.Location not reported, OR · Active | Location not reported, OR | LLC | May 15, 2014 | Active |
| AT&T DATACOMM, LLCLocation not reported, OR · Active | Location not reported, OR | LLC | Jun 17, 2015 | Active |
| AT&T SERVICES, INC.Location not reported, OR · Active | Location not reported, OR | Corporation | Oct 30, 2015 | Active |
| HIGHLEVEL INC.Location not reported, OR · Active | Location not reported, OR | Corporation | Jul 3, 2018 | Active |
| AVIGILON USA CORPORATIONLocation not reported, OR · Active | Location not reported, OR | Corporation | Mar 11, 2019 | Active |
| AT&T INVESTMENT OPERATIONS 1, LLCLocation not reported, OR · Active | Location not reported, OR | LLC | Jul 7, 2020 | Active |
| LEADCONNECTOR LLCLocation not reported, OR · Active | Location not reported, OR | LLC | Mar 1, 2021 | Active |
| NORTHWEST FARMER-STOCKMAN, LLCLocation not reported, OR · Active | Location not reported, OR | LLC | Jun 13, 2022 | Active |
| EMBURSE, INC.Location not reported, OR · Active | Location not reported, OR | Corporation | Jun 23, 2022 | Active |
| SECURE BENEFITS ALLIANCE, LLCLocation not reported, OR · Active | Location not reported, OR | LLC | Aug 4, 2022 | Active |
| AMP WEST, LLCLocation not reported, OR · Active | Location not reported, OR | LLC | Dec 19, 2022 | Active |