| CoID | Company | Type | Status | States Served | 24X7 Phone |
|---|---|---|---|---|---|
| TLTC | Twin Lakes Telephone Cooperative Corp. | CLEC Facility | ILEC | A | Gainesboro | TN | 931-268-0281 |
| TLX | Telnyx LLC | VoIP Provider | A | USA - Nation Wide | 888-980-9750 |
| TMC | Turtle Mountain Communications Inc. | Facility | A | ND | 701-256-1100 |
| TMG | The Maynard Group | PBX/PS911/Shared Tenant VoIP Reseller VoIP Provider | A | USA - Nationwide | 831-462-0777 |
| TMLP | Taunton Municipal Lighting Plant | ILEC | A | MA | 508-824-5844 |
| TMOB | T-Mobile USA | Wireless/Cellular/PCS | A | USA - Nationwide | 888-662-4662 |
| TMP | TMP Corp dba Simmetry Communications - CANCELLED | Wireless/Cellular/PCS | C | IL | MO | 866-220-6867 |
| TMPLU | Temple University | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | A | PA | 215-204-6207 |
| TMS | Tailored Management Services LLC | PBX/PS911/Shared Tenant | A | ID | OR | WA | 208-661-5239 |
| TMTN2 | Templeton Telephone Company | ILEC | A | IA | 712-669-3311 |
| TNARR | Town of Narragansett RI - CANCELLED | PBX/PS911/Shared Tenant | C | RI | 401-789-1091 |
| TNC | TNC Communications inc. | CLEC Facility CLEC Reseller VoIP Provider | A | USA - Nationwide | 919-275-5172 |
| TNCC | Thomas Nelson Community College | VoIP | C | VA | 757-825-2732 |
| TNCII | Trans National Communications International - CANCELLED | CLEC Facility | CLEC Reseller | CLEC UNE | C | 800-800-8400 | |
| TNETS | TalkingNets Inc. - CANCELLED | Facility | C | AZ | CA | CO | DC | FL | GA | IL | MA | MD | MI | MN | MO | NY | NC | OH | PA | TX | UT | VA | WA | 877-375-6621 |
| TNETW | Data Monster LLC dba Total Networks | VoIP Provider | A | 602-412-5000 | |
| TNETX | Trunetex LLC | PBX/PS911/Shared Tenant VoIP Reseller VoIP Provider | A | USA - Nationwide | 401-479-9984 |
| TNI | TNI Telecom Inc - CANCELLED | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) VoIP Provider | C | USA - Nationwide | 214-396-8324 |
| TNL | Tiagis Networks, LLC (Cancelled-See Telspirion TUS) | C | 0 | 956-657-4000 | |
| TNLLC | Triton Networks LLC | CLEC Reseller VoIP Reseller | A | TX | 214-632-2338 |
| TNLTD | Telesphere Networks, Ltd. (Cancelled) | CLEC Reseller, VoIP | C | AZ | 800-680-2203 |
| TNLV | Telesphere a Vonage Company | VoIP Reseller VoIP Provider | A | USA - Nation Wide | 480-385-7000 |
| TNN67 | Top Notch Networking LLC | VoIP Provider | A | CA | 760-241-6518 |
| TNORT | Teldelnort Communications LLC - CANCELLED | VoIP Reseller | C | USA - Nationwide | 956-369-9600 |
| TNTC | Tenino Telephone Company | ILEC | A | WA | 360-264-5151 |
| TNTI | Terra Nova Telecom Inc | CLEC Facility | CLEC Reseller | A | FL | 941-600-0333 |
| TNX | Telnexus LLC - CANCELLED | VoIP Reseller | VoIP Provider | C | USA | 510-991-1114 |
| TOAMA | Town of Andover | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | A | MA | 978-623-8324 |
| TOAV | Town of Apple Valley - CANCELLED | VoIP Provider | C | CA | 760-240-7000 |
| TOB | Town of Burlington, Massachusetts (INACTIVE) | PBX | C | MA | 781-272-1212 |
| 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. | LEC | 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 | LEC | 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 |