| CoID | Company | Type | Status | States Served | 24X7 Phone |
|---|---|---|---|---|---|
| TAFT | Taft College | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | A | CA | 661-763-7737 |
| TAG07 | TAGHELPS - CANCELLED | Database Management System Provider | C | FL | 904-679-1780 |
| TALK | Talk America | CLEC Facility CLEC Reseller CLEC UNE | A | AL | CA | FL | GA | IL | IN | KY | LA | MD | MA | MI | MS | MO | NV | NJ | NY | NC | OH | PA | SC | TN | VA | WA | WI | 800-200-1989 option 3 |
| TALKO | TalkOn (CANCELLED) | Reseller | C | CO | 720-323-5255 |
| TALKV | CommSuite LLC dba TALKVOX | VoIP Provider | A | USA - Nationwide | 503-913-9051 |
| TALLG | TallGrass Communications, Inc (Cancelled) | Facility | C | OH, IL, MI, WI, IN | 248-766-9601 |
| TAMUS | Texas A&M University - Telecom | PBX/PS911/Shared Tenant; VoIP | A | TX A&M University | 979-845-8300 |
| TANC | The Academy of the New Church - CANCELLED | PBX | C | PA | 215-947-4200 |
| TARID | Taridium Canada - CANCELLED | PBX/PS911/Shared Tenant VoIP Reseller VoIP Provider | C | USA - Nationwide | 289-288-3617 |
| TASVS | Talk America Services LLC - CANCELLED | CLEC Reseller | C | USA - Nation Wide | 855-546-5000 |
| TATUM | Tatum Telephone Company | ILEC | A | TX | 405-826-4560 |
| TAYCO | Tex-Link Communications - CANCELLED | Facility | C | TX | 210-892-4100 |
| TAYL | Taylor Telephone Coop Inc. dba Taylor Telecom | CLEC Facility ILEC VoIP Provider | A | TX | 800-238-4155 |
| TAYLR | Taylor Community | PBX/PS911/Shared Tenant | A | NH | 603-366-1217 |
| TAYLT | Taylor Telecommunications (INACTIVE) | Cellular | C | TX | 325-846-4111 |
| TBC | TotalBC Inc. | VoIP Reseller | A | USA - Nationwide | 704-334-7350 emergency op |
| TBEAM | Transbeam Inc - CANCELLED | CLEC Facility | CLEC Reseller | VoIP Provider | C | USA | 646-571-1000 |
| TBI | Telebeam (Cancelled) | Reseller | C | PA | 814-238-0000 |
| TBTC | Tularosa Basin Telephone Co. | CLEC Facility ILEC | A | NM | 575-585-8222 |
| TC3 | TC3 Telecom Inc | CLEC Facility|CLEC Reseller | A | MI | 734-279-1339 |
| TCAST | TCAST Communications - CANCELLED | Facility | C | CA | 661-253-5030 |
| TCC | Tidewater Community College | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | A | VA | 757-822-1577 |
| TCCD | Tarrant County College | PBX/PS911/Shared Tenant | A | USA | 817-515-8911 |
| TCCH | The Children's Center of Hamden Inc. (Cancelled ID) | PBX/PS911/Shared Tenant | VoIP | C | CT | 203-627-2273 (Unverified) |
| TCCU | Columbia Teachers College (CANCELLED) | Facility | C | NY | 212-678-8210 |
| TCCWA | Tacoma Community College - CANCELLED | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | C | WA | 253-566-5111 |
| TCG | AT&T Local Services | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | A | USA - Nationwide | 888-249-4980 |
| TCGEN | Tech Com(Cancelled) | CLEC Facility | C | WI | 608-985-7202 |
| TCHD | Travis County Healthcare District - CANCELLED | VoIP Provider | C | TX | 512-978-8457 |
| TCHFN | TechFinity - CANCELLED | VoIP Reseller VoIP Provider | C | USA - Nationwide | 615-800-8472 |
| TCI | Cingular Wireless (Cancelled - see ATTMO) | Wireless | C | ALL | 800-635-6840 |
| TCIAK | TelAlaska Inc. | Wireless/Cellular/PCS | A | AK | 907-751-4325 |
| TCK | TCK Solutions LLC | VoIP Reseller | A | USA - Nationwide | 808-825-5564 |
| TCLS | The Telephone Connection Local Services LLC - CANCELLED | CLEC UNE | C | CA | 800-274-9539 |
| TCMXX | TechMaxx LLC - CANCELLED | CLEC Reseller | VoIP Reseller | C | TX | 956-986-2400 |
| TCNA | Toyota Connected | Other (must identify below) | Telematics Service Provider | A | USA - Nationwide | 469-315-1146 |
| TCNX | TeleConnx Inc. | VoIP Reseller | A | USA - Nationwide | 888-894-6505 |
| TCORP | Triggerfish Corporation -CANCELLED | VoIP Provider | C | USA - Nation Wide | 816-676-0434 |
| TCS | Comtech Telecommunications Corp. | Database Management System Provider VPC | A | USA - Nation Wide | 800-959-3749 |
| TCT | Tri County Telephone Ass'n Inc | CLEC Facility | Co-Op/Rural | ILEC | VoIP Provider | A | MT | WY | 307-568-1000 |
| TCTMC | Tri-County Telephone Membership Corp | CLEC Facility ILEC VoIP Reseller | A | North Carolina | 336-973-4000 |
| TD678 | Tadiran Telecom | PBX/PS911/Shared Tenant VoIP Provider | A | USA - Nationwide | 678-506-7200 |
| TDC | Telnet Corporation | VoIP Provider | A | USA - Nation Wide | 614-842-2700 |
| TDN | Tolowa Dee-ni' Nation | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | A | CA | OR | 707-487-9255 |
| TDPC | TDPC dba NCOL.NET, Inc. (Cancelled) | CLEC UNE | C | NC | 919-702-0083 |
| TDPT | Telco Depot Corp | VoIP Reseller | A | USA - Nation Wide | 203-521-7077 |
| TDS | TDS Telecom | ILEC | A | USA - Nation Wide | 888-790-1216 |
| TDSNH | The Derryfield School | PBX/PS911/Shared Tenant | A | NH | 208-720-2239 |
| TDSVP | TDS | VoIP Provider | A | USA - Nation Wide | 888-790-1216 |
| TEC | Tampa Electric Company - CANCELLED | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | C | FL | 813-225-5139 |