| Company | Status | Now Known As | Street Address | Customer Contact No. | |
|---|---|---|---|---|---|
| Z-Tel Communications, Inc.* | Ceased Operations | ||||
| Z-TEL, INC. | Ceased Operations | ||||
| Zap Telecom (USA) Ltd., LLC | Ceased Operations | ||||
| Zayo Bandwidth Northeast Sub LLC | Ceased Operations | n/a | 901 Front St Suite 200 Louisville, CO 80027 | ||
| Zayo Bandwidth Northeast, LLC | Ceased Operations | 400 Centennial Parkway Suite 200 Louisville, CO 80027 | |||
| Zayo Bandwidth, LLC | Ceased Operations | Zayo Group, LLC | 1805 29th Street STE 2050 Boulder, CO 80301 | ||
| Zayo Group, LLC | Active | 1401 Wynkoop St. Suite 500 Denver, CO 80202 | 866-364-6033 | ||
| Zayo Infrastructure Holdco, LLC | Active | 1401 Wynkoop St. Suite 500 Denver, CO 80202 | 866-364-6033 | ||
| Zayo Northeast, LLC | Active | 1401 Wynkoop St. Suite 500 Denver, CO 80202 | 866-364-6033 | ||
| ZCOM Communications Inc. | Ceased Operations | 1417 59th Street Brooklyn, NY 11219 | |||
| Zenex Long Distance, Inc. | Ceased Operations | ||||
| ZenFi Networks, Inc | Ceased Operations | ZenFi Networks, LLC | 90 White Street New York, New York 10013 | ||
| Zenfi Networks, LLC | Ceased Operations | Boldyn Networks Infrastructure US LLC | 30-40 48th Avenue Long Island City, NY 11101 | ||
| Zeptel Communications, Inc. | Ceased Operations | ||||
| ZEUS TELECOMMUNICATIONS, LLC | Ceased Operations | N/A | P.O. BOX 155 TRENTON, TX 75490 | ||
| Zip Call, L.L.C. | Ceased Operations | ||||
| Zipcall, LLC | Ceased Operations | ||||
| Zito New York, LLC | Active | 102 S Main St PO BOX 665 Coudersport, PA 16915 | 800-365-6988 | ||
| Zone Telecom, Inc. | Ceased Operations | ANZ Communications 3130 Pleasant Run Springfield, IL 62711 | |||
| Zone Telecom, LLC | Ceased Operations | 3130 Pleasant Run Springfield, IL 62711 | |||
| Zoom-i-Net Communicatios, Inc | Ceased Operations | 14170 Clubhouse Road Gainesville, VA 20155 | |||
| ZTELEPHONY, LLC d/b/a Worldnet | Ceased Operations | 9211 Irvine Boulevard Irvine, CA 92618 | |||