| CoID | Company | Type | Status | States Served | 24X7 Phone |
|---|---|---|---|---|---|
| UCNJ | County of Union NJ | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | A | NJ | 908-654-9800 |
| UCNVG | Pacific Bell / Navigator UNE Complex (Cancelled) | UNE-Comp | C | CA, NV | 800-275-0014 |
| UCPNJ | Pacific Bell/Pacific Centrex Services (Cancelled) | UNE | C | CA | 800-275-0014 |
| UCPS | Union County Public School | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) PBX/PS911/Shared Tenant Other - (must identify below) | PS/ALI from Frontier | A | NC | 704-296-3160 |
| UCR | University of California Riverside | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) PBX/PS911/Shared Tenant | A | CA | 909-938-9378 |
| UCRIM | Pacific Bell/TMC Communications (Cancelled) | UNE-Comp | C | California | 800-275-0014 |
| UCS | Unique Communications Solutions | Database Management System Provider VPC | A | USA - Nationwide | 702-216-0266 |
| UCSB | University of California Santa Barbara - CANCELLED | PBX/PS911/Shared Tenant | C | CA | 805-893-3446 |
| UCSD | University of California San Diego | PBX/PS911/Shared Tenant | A | USA - Nationwide | California | 858-964-8198 |
| UCSDH | UCSD Health System | PBX/PS911/Shared Tenant | A | CA | 619-543-6222 |
| UCTEL | UComtel Inc | VoIP Reseller VoIP Provider | A | USA - Nation Wide | 845-625-9000 |
| UCVH | Upper Connecticut Valley Hospital | PBX/PS911/Shared Tenant | A | USA - Nationwide | 603-237-4971 |
| UCVUL | Pacific Bell/Vertex Broadband (Cancelled) | UNE-Comp | C | California | 800-275-0014 |
| UCWMA | Pacific Bell / Anew Telecommun. Cor. (Cancelled) | UNE - Comp. | C | CA | 800-275-0014 |
| UDAC | USDATANET (INACTIVE) | Facility | C | NY | 315-952-8574 |
| UDALS | West Safety Services | PBX/PS911/Shared Tenant | A | 4807198557 | 4807198557 |
| UEA | Sun-Tel USA (INACTIVE) | CLEC Reseller, CLEC UNE | C | FL, KY | 904-731-9995 |
| UEM | CynergyComm.net Inc. - CANCELLED | CLEC Facility | C | MI | 888-257-1042 |
| UFT | United Farmers Telephone/Evertek | ILEC | A | IA | 800-242-0154 |
| UHART | University of Hartford | PBX/PS911/Shared Tenant | A | CT | 860-768-7985 |
| UHCIN | Unity Healthcare LLC | PBX/PS911/Shared Tenant | A | IN | 765 446-5321 |
| UHLTH | UConn Health | PBX/PS911/Shared Tenant | A | CT | 860-679-1000 |
| UID | Lightyear Network Solutions LLC - CANCELLED | CLEC UNE | VoIP | C | All States | 866-614-8647 |
| UIL | United Illuminating Company | PBX | A | CT | 203-926-4540 |
| UM119 | Unique Management Services - CANCELLED | PBX/PS911/Shared Tenant | C | IN | 502-817-7388 |
| UMB | University of Maryland Baltimore | PBX/PS911/Shared Tenant | A | MD | 410-706-6882 |
| UMI | Mid-Iowa Telecom LLC | CLEC Facility | A | IA | 855-643-4692 |
| UML | University of Massachusetts - Lowell(Cancelled) | PBX | C | University of Massachusetts - Lowell | 978-934-4000 |
| UMMC | University of Mississippi Medical Center - CANCELLED | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | C | MS | 601-850-8574 |
| UMONY | Umony Limited | VoIP Reseller | A | USA - Nationwide | +441223659231 |
| UMS | University of Maine System - CANCELLED | PBX/PS911/Shared Tenant | C | ME | 207-592-3521 |
| UNBND | Unbound Systems LLC | PBX/PS911/Shared Tenant VoIP Reseller VoIP Provider | A | USA - Nationwide | 888-530-2120 |
| UNCCH | University of North Carolina at Chapel Hill (CANCELLED) | PBX/PS911/Shared Tenant, VoIP | C | UNC at Chapel Hill | 919-962-6503 |
| UNDP | United Nations Development Programme | Other - (must identify below) | Non profit International Organization | A | NY | 212-906-5000 |
| UNHQ | United Nations - CANCELLED | PBX/PS911/Shared Tenant | C | NJ | NY | 212-963-6666 |
| UNIFI | Unified Telecom Inc. DBA CCSi Communications | VoIP Reseller VoIP Provider | A | USA - Nationwide | 630-241-0600 |
| UNIMT | Univision Inc. | VoIP Reseller | A | USA - Nationwide | 406-721-8876 |
| UNION | Union Telephone Company | ILEC Wireless/Cellular/PCS VoIP Provider | A | WY | 307-782-6131 |
| UNITS | The Ohio State University | PBX/PS911/Shared Tenant | A | OH | 614-292-2525 |
| UNITY | Unitel Inc | CLEC Facility ILEC VoIP Provider | A | ME | 207-948-5757 |
| UNIV | Oahu Transit Services Inc - CANCELLED | UNIV | C | HI | 877-374-4530 |
| UNL | Broadwing Local Services Inc. (Cancelled) | Reseller | C | OH, IN, KY | 800-735-3030 |
| UNRV | Union River Telephone Company | ILEC | A | ME | 207-944-9279 |
| UNTEL | United Telephone Association Inc. | ILEC | A | KS | 620-227-8641 |
| UNWLS | United Wireless Communications Inc. | Wireless/Cellular/PCS | A | KS | 620-682-5108 |
| UO-UO | Unified Office Inc | VoIP Provider | A | USA - Nation Wide | 603-427-9500 |
| UOFID | University of Idaho - CANCELLED | PBX/PS911/Shared Tenant | C | ID | 208-885-6111 |
| UofR | University of Rochester | PBX/PS911/Shared Tenant | A | NY | 585-756-4800 |
| UOP | University of the Pacific - CANCELLED | PBX/PS911/Shared Tenant | C | CA | 209-946-3968 |
| UOR | University of Redlands | PBX/PS911/Shared Tenant | A | CA | 909-748-8888 |