| CoID | Company | Type | Status | States Served | 24X7 Phone |
|---|---|---|---|---|---|
| WMSCO | Williams County Commissioners | ILEC | A | OH | 419-636-2059 |
| WMT | Walmart.com - CANCELLED | VoIP | C | CA | 650-837-5555 |
| WMTC | Wabash Mutual Telephone Company | CLEC Facility CLEC Reseller ILEC | A | IN | OH | 419-942-1111 |
| WMTEL | Woolstock Mutual Telephone | ILEC | A | IA | 515-839-5571 |
| WMU | Western Michigan University | PBX/PS911/Shared Tenant | A | MI | 269 760-8091 |
| WNA | WinNet Telecommunications Inc. | CLEC Facility CLEC Reseller CLEC UNE VoIP Reseller VoIP Provider | A | IN | KY | 502-387-6800 |
| WNDM | City of Windom Telecommunications Department | CLEC Facility | A | MN | 507-832-8000 |
| WNINC | Watson Networks - CANCELLED | CLEC Facility VoIP Provider | C | USA - Nation Wide | 8553815700 |
| WNSTN | Winston & Strawn LLP - CANCELLED | PBX/PS911/Shared Tenant | C | IL | NY | DC | NC | CA | 312-558-6065 |
| WNSTR | Winstar Communications, LLC (CANCELLED) | Facility | C | All Winstar Service Areas | 888-404-0114 |
| WNT | WorldNet Telecommunications | CLEC Facility | CLEC Reseller | CLEC UNE | VoIP | IXC | A | Puerto Rico | 787-706-2600 |
| WODN | WorldNet L.L.C. - CANCELLED | CLEC | C | KS - Lawrence | 785-312-6965 |
| WOL | Wichita Online Inc | CLEC Facility | A | OK | 405-826-4560 |
| WOODS | Woodstock Telephone Company | ILEC | VoIP Reseller | A | MN | 800-752-9397 |
| WPBB | Westphalia Broadband Inc - (CANCELLED) | CLEC Facility | C | MI | 855-492-4662 |
| WPLLC | Wireless Partners LLC | Wireless/Cellular/PCS | A | ME | 207-808-5003 |
| WPS | Waterford Public Schools | ILEC Facility | A | CT | 860-625-5764 |
| WPSCT | Weston Public Schools | PBX/PS911/Shared Tenant | A | CT | 914-980-1231 |
| WPT | West Plains Telecommunications | ILEC | A | TX | 806-272-5533 |
| WPT07 | West Point Telephone Company Inc (INACTIVE) | ILEC | C | 0 | 765-572-2488 |
| WPTC | Westphalia Telephone Co | CLEC Facility ILEC | A | MI | 855-492-4662 |
| WRR | WireStar Inc. - CANCELLED | CLEC Facility | C | TX | 888-999-1525 |
| WRT | West River Telecommunications Cooperative | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) ILEC VoIP Reseller | A | ND | SD | 701-748-2211 |
| WSCC | Peninsula Fiber Network LLC | CLEC Facility | A | MI | 888-564-8881 |
| WSD | City of Woburn School Department | PBX/PS911/Shared Tenant | A | MA | 781-844-8295 |
| WSDVT | Williston School District | PBX/PS911/Shared Tenant | A | VT | 802-778-0933 |
| WSDWA | Woodland Public Schools | PBX/PS911/Shared Tenant | A | WA | 360-674-4350 |
| WSHCO | Washington County | PBX/PS911/Shared Tenant | A | OR | 503-846-4000 |
| WSLK | WestLink Communications, LLC (Cancelled - See WEST) | Wireless | C | KS | 800-360-7893 |
| WSSU | Washington South Supervisory Union (Cancelled ID) | PBX/PS911/Shared Tenant | C | VT | 802-522-6133 (Unverified) |
| WST | West Side Telecommunications | Facility | A | Laurel point | WV; Daybrook | WV; Core WV | 304-983-2211 |
| WSTAT | Westat(Cancelled) | Co-Op/Rural, PBX/PS911/Shared Tenant | C | MD | 800-773-7911 |
| WSTC | Warm Springs Telecommunications Company | CLEC Facility | A | OR | 541-615-0599 |
| WSTCT | Town of Weston - CANCELLED | PBX/PS911/Shared Tenant | C | CT | 914-980-1231 |
| WSTN | Town of Weston (Cancelled) | PBX | C | Weston, CT | 203-222-2600 |
| WSULK | Wright State University | PBX/PS911/Shared Tenant | A | OH | 937-239-5716 |
| WTAP | Wiretap Telecom | VoIP Provider | A | USA - Nationwide | 405-209-2695 |
| WTC | Westelcom Network Inc. | Facility | A | NY | 800-982-5463 |
| WTCI | Wilson Telephone Company Inc | ILEC | A | Kansas | 800-432-7607 |
| WTCMI | Westphalia Telephone Company (CANCELLED) | Facility | C | Westphalia, MI | 989-587-5000 |
| WTHS | Worcester Technical High School | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | A | MA | 508-799-8606 |
| WTI | Waterfield Technologies | VoIP Reseller | A | USA - Nationwide | 407-575-9480 |
| WTMC | Barnardsville Saluda Service Wilkes | CLEC Facility ILEC VoIP Reseller | A | NC | 336-973-4000 |
| WTRT | West Texas Rural Telephone Coop. | ILEC | A | TX | 806-364-5611 |
| WTSFL | Wavetech Systems LLC. | VoIP Provider | A | USA - Nation Wide | 888-305-3337 |
| WTSI | W.T. Services Inc. | CLEC Facility | A | TX | 806-364-5611 |
| WTSNC | Watson Communications Corp | VoIP Reseller | A | USA - Nationwide | 610-631-5454 |
| WTT | Wes-Tex Telecommunications Ltd | CLEC Facility CLEC Reseller CLEC UNE | A | TX | 432-756-3826 |
| WTTC | Wes-Tex Telephone Cooperative Inc | Co-Op/Rural ILEC | A | TX | 432-756-3393 |
| WTTEC | West Tennessee Telephone Co. dba TEC Bradford Division | ILEC | A | TN | 731-742-2211 |