| CoID | Company | Type | Status | States Served | 24X7 Phone |
|---|---|---|---|---|---|
| YHOSP | York Hospital | PBX/PS911/Shared Tenant | A | ME | NH | 207-363-4321 |
| YMESD | Yarmouth School Department | PBX/PS911/Shared Tenant | A | ME | 207-846-3333 |
| YMHIL | Yamhill Communications Agency (CANCELLED) | 9-1-1 Admin-CPE ALI | C | Yamhill County, OR | 503-464-6500 |
| YMX | Ymax Communications Corp | CLEC Reseller | A | USA - Nationwide | 800-357-4911 |
| YOJI | Yoji Inc. - CANCELLED | VoIP Provider | C | CA | 213-537-8280 |
| YOURS | YourSip Telecom | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | A | USA - Nationwide | 727-450-8200 |
| YPE | VoIP PBX Express.Cloud LLC | VoIP Reseller VoIP Provider | A | USA - Nationwide | 206-966-1092 |
| YTC | West Kentucky Rural Telephone Cooperative (INACTIVE) | Wireless/Cellular/PCS | C | TN | 731-643-6121 |
| YTCI | Yeoman Telephone Company Inc. | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | A | IN | 574-965-2100 |
| YTL | Y Tell, Inc. (Cancelled) | CLEC Facility | C | NY | 646-372-7088 |
| YTNJ | Yorktel Telecom | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | A | USA - Nationwide | 786-381-8888 |
| YVFWC | Yakima Valley Farm Workers Clinics | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | A | OR | WA | 509-865-7861 |
| YVS | PBT d/b/a Comporium Communications | CLEC Facility VoIP Provider | A | SC | 803-326-7370 |
| YVT | Yadkin Valley Telecom Inc | CLEC Facility | A | NC | 336-408-2251 |
| YVTMC | Yadkin Valley Telephone | ILEC | A | NC | 336-463-5127 |
| YWTCO | Yukon-Waltz Telephone Company | ILEC | A | PA | 724-722-1110 |
| ZAN | Zan Inc. - CANCELLED | VoIP Provider | C | FL | 954-804-0462 |
| ZEEG | Zee Group | VoIP Reseller | USA - Nationwide | 212-203-7052 | |
| ZEER | The One and Only Corp - CANCELLED | VoIP Provider | C | USA - Nationwide | 650-250-6694 |
| ZELLA | Zella Technologies LLC | VoIP Provider | A | USA - Nationwide | 985-520-4824 |
| ZEN | Zen Communications | VoIP Reseller VoIP Provider | A | CO | NM | UT | 970-232-2120 |
| ZENDA | Zenda Telephone Company Inc. | ILEC | A | KS | 620-243-4924 |
| ZENK | ZENK Group d/b/a Planet Access (CANCELLED) | Facility/Reseller | C | MI | 800-500-6140 |
| ZHILL | City of Zephyrhills | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | A | FL | 813-780-0046 |
| ZIP | Zip911 | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) | A | USA - Nationwide | 844-700-4141 |
| ZIPPY | Zippytech LLC d/b/a Cedar Networks | CLEC Facility CLEC Reseller VoIP Provider | A | CO | NM | 416-408-5266 |
| ZLINY | New Marketing Group Inc | VoIP Reseller VoIP Provider | A | USA - Nation Wide | 516-435-8777 |
| ZMS | Voyant Communications LLC - CANCELLED | AZ | CA | CO | GA | ID | IL | IN | IO | KS | KY | LA | MI | MN | MS | MO | NE | ND | OH | SD | TN | UT | WA | WI | WY | C | A | 888-217-6323 |
| ZNGO | Zingo Telecom, Inc.(Cancelled) | Reseller | C | All | 941-329-6557 |
| ZONIT | Zonitel Solutions | VoIP Reseller | A | USA - Nationwide | 833-966-4835 |
| ZOOM | Zoom Video Communications Inc. | VoIP Reseller VoIP Provider | A | USA - Nationwide | 252-374-3716 |
| ZOOM1 | Zoombak LLC (CANCELLED) | Wireless/Cellular/PCS | C | US | 866-951-0101 |
| ZTBOM | Zurcher Tire | PBX/PS911/Shared Tenant | A | IL | IN | IO | MI | MO | 260-692-0381 |
| ZTEL | Z-Tel Communications (CANCELLED) | CLEC | C | CA, NV | 800-275-0014 |
| ZYFX | Zyfexx Inc. - CANCELLED | VoIP Provider | A | KY | OH | WV | 740-456-0839 |
| ZYIS | Zyis Digital - CANCELLED | 9-1-1 Admin-CPE ALI (9-1-1 Jurisdiction/PSAP ONLY) PBX/PS911/Shared Tenant VoIP Reseller | C | FL | 954-280-8324 |