| CoID | Company | Type | Status | States Served | 24X7 Phone |
|---|---|---|---|---|---|
| TOBH | Town of Bar Harbor | PBX/PS911-/Shared Tenant | A | MA | 207-288-3391 |
| TOBME | Town of Bucksport | PBX/PS911/Shared Tenant | A | ME | 207-951-8204 |
| TODMA | Town of Dedham | PBX/PS911/Shared Tenant | A | MA | 781-310-1141 |
| TOEH | Town of East Haddam | VoIP Provider | A | CT | 860-873-5020 |
| TOFM | Town of Flower Mound | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | A | TX | 972-874-6000 |
| TOFMA | City of Framingham MA | Other - (must identify below) | | A | MA | 978-257-0870 |
| TOG | The Town of Greenwich - CANCELLED | PBX | C | Greenwich | CT | 203-912-1055 |
| TOHNH | Town of Hanover NH | PBX/PS911/Shared Tenant | A | NH | 603-643-2222 |
| TOL | Town of Leesburg | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | A | VA | 800-773-7911 |
| TOLD | The Toledo Telephone Co. Inc. | ILEC | A | WA | 360-508-7059 |
| TOLY | Toly Digital Networks Inc | VoIP Provider Other (must identify below) | Wholesale services to ILECs & CLECs | A | USA - Nationwide | 562-694-8655 |
| TOMTC | Ottoville Mutual Telephone Company | ILEC | A | OH | 419-453-3324 |
| TON01 | TeamOne Networking Inc. - (CANCELLED) | PBX/PS911/Shared Tenant | C | USA - Nation Wide | |
| TONEC | Tone Communication Services LLC | CLEC Reseller | A | USA - Nationwide | 800-515-8182 |
| TONM | Town of New Milford | PBX/PS911/Shared Tenant | A | CT | 860-898-0282 |
| TOPNY | Town of Orchard Park - CANCELLED | VoIP Provider | C | NY | 716-662-6444 |
| TOPS | Topsham Telephone Company | CLEC Facility CLEC Reseller CLEC UNE ILEC | A | NH | VT | 802-439-5325 |
| TOS | Town of Scituate | PBX/PS911/Shared Tenant | A | MA | 781-545-1212 |
| TOT | Town of Thornton | PBX/PS911/Shared Tenant | A | USA - Nationwide | 603-726-8168 |
| TOTAH | Totah Communications Inc. | ILEC | A | OK | KS | 918-697-7871 |
| TOTEL | Totelcom Networks LLC | CLEC Facility | A | TX | 254-842-7039 |
| TOUS | TOUS SOFTWARE CORP | VoIP Reseller VoIP Provider | A | USA - Nationwide | 954-809-3100 |
| TOW | Town Of Wayland - Wayland Public Schools - CANCELLED | PBX/PS911/Shared Tenant | C | MA | 508-358-4747 |
| TOWCT | Town of Westport | VoIP | A | CT | 203-341-5010 |
| TP01 | Talking Platforms LLC. | VoIP Reseller | A | USA - Nation Wide | 202-747-0066 |
| TPAC | Telepacific Communications | CLEC Facility | CLEC Reseller | A | CA | NV | 800-851-6705 |
| TPS | Two Port Support LLC | PBX/PS911/Shared Tenant VoIP Reseller VoIP Provider | A | USA - Nationwide | CT | MA | NH | NY | RI | VT | 860-422-4600 |
| TRAN | Trans-Cascades Telephone Co. | Facility | A | OR | 503-630-4202 |
| TRAPP | Trapp Technology - CANCELLED | VoIP Provider | C | USA - Nationwide | 602-443-9145 |
| TRCL | Three River Communications | CLEC Facility | A | NE | 402-569-2666 |
| TRCNY | TC Wireless Inc. | CLEC Facility | A | KS | 620-767-5153 |
| TRCTC | Three River Community-Tech College (Cancelled) | PBX | C | CT | 886-885-2327 |
| TRDO | Intrado Life & Safety Inc. | VPC | A | USA - Nation Wide | 800-586-1062 |
| TRE | Tim Ron Enterprises LLC | Facility | A | Longview | TX | 903-230-0029 |
| TREST | Tresta Communications Inc. | VoIP Provider | A | USA - Nationwide | 844-287-3782 |
| TRICO | Ritter Communications - CANCELLED | Co-Op/Rural ILEC Internet Protocol Relay Provider VoIP Provider | C | AR | 870-974-9100 |
| TRIDA | Tridacom IT Solutions Inc. | VoIP Reseller VoIP Provider | A | USA - Nationwide | 1-647-478-1960 |
| TRIMO | Triangle Communication System Inc. | Wireless/Cellular/PCS | A | MT | 406-394-7807 |
| TRINE | Trine University | PBX/PS911/Shared Tenant | A | USA - Nation Wide | 260-665-4275 |
| TRIOS | RCCH Trios Health | PBX/PS911/Shared Tenant | A | WA | 509-221-5884 |
| TROWE | T. Rowe Price Associates Inc. | PBX/PS911/Shared Tenant | A | USA | 410-345-5111 |
| TROYC | Troy Cablevision Inc. | CLEC Facility | A | AL | 800-735-9546 |
| TRTC | The Rye Telephone Company | ILEC | A | CO | 719-676-3131 |
| TRTEL | Cingular Wireless (Cancelled - see ATTMO) | Wireless | C | ALL | 800-635-6840 |
| TRTL | Three River Telco | ILEC | A | NE | 402-569-2666 |
| TRTN | Triton PCS, Inc.-Mid-Atlantic Region (Cancelled) | Wireless | C | VA, TN | 888-663-6230 |
| TRU | Trumansburg Telephone Company Inc. | ILEC | A | NY | 866-353-7209 |
| TRU1 | The Arnold Companies | PBX/PS911/Shared Tenant | A | USA - Nationwide | 903-334-7974 |
| TRUE | True On Inc | VoIP Provider | A | CA | 619-650-0028 |
| TRUID | TRUSTID Inc | VoIP Provider | A | USA - Nationwide | 703-547-6008 |