| Company | Now Known As | Street Address | Customer Contact No. |
|---|---|---|---|
| Baka Computers, Inc | 200 Pleasant Grove Rd Ithaca, NY 14850 | 607-216-7171 | |
| Baltimore-Washington Telephone Company | 3513 Brighton Blvd Suite 482 Denver, CO 80216 | 949-942-6500 | |
| Bandwidth.com CLEC, LLC | 2230 Bandmate Way Raleigh, NC 27607 | 855-513-9666 | |
| Barr Tell USA, Inc. | 218 East Park Ave. Suite 522 Long Beach, NY 11561 | 212-226-4420 | |
| BCE Nexxia Corporation | 1821 Walden Office Square Suit 400 Schaumburg, IL 60173 | 855-848-7155 | |
| BCM One, Inc. | 295 Madison Ave 5th Floor New York, NY 10017 | 888-543-2000 | |
| BCN Telecom, Inc. | 1200 Mount Kemble Avenue 3rd Floor Morristown, NJ 07960 | 866-462-9259 | |
| BIF IV Intrepid OpCo LLC | 11001 W 120th Avenue Suite 305 Broomfield, CO 80021 | 866-371-1860 | |
| Billing Services of America, Inc. | 10161 Park Run Drive Suite 231 Las Vegas, NV 89145 | 952-401-0681 | |
| Block Line Systems, LLC | 2700 Oregon Road Northwood, OH 43619 | 888-808-6111 | |
| BlueBird Communications LLC | 447 Broadway, 2nd FL #155 New York, NY 10013 | 212-380-7974 | |
| Boldyn Networks Fiber US LLC | 121 Innovation Dr Ste 200 Irvine, CA 92617-3094 | 866-265-3961 | |
| Boldyn Networks Infrastructure US LLC | 121 Innovation Dr Ste 200 Irvine, CA 92617-3094 | 866-265-3961 | |
| Boldyn Networks US LLC | 121 Innovation Dr Ste 200 Irvine, CA 92617-3094 | 949-515-1500 | |
| BRIGHT PACKET, INC. | 11756 Artesia Blvd., Suite A Artesia, CA 90701 | 866-375-6032 | |
| Broadband Dynamics, L.L.C. | 8457 E. Via De Commercio First Floor Scottsdale, AZ 85258 | 800-277-1580 | |
| Broadview Networks, Inc. | 4005 North Rodney Parham Road Little Rock, AR 72212 | 855-352-2731 | |
| Broadvox-CLEC, LLC | One North Wacker Drive Suite 2500 Chicago, IL 60606 | 312-384-8000 | |
| Broadwing Communications, LLC. | 100 CenturyLink Dr Monroe, LA 71203 | 800-244-1111 | |
| BTI Communications, Inc. d/b/a TELZEQ Communications | 4203 13th Ave Top Floor Brooklyn, NY 11219 | 718-887-9881 | |
| Business Automation Technologies, Inc. d/b/a Data Network Solutions of New Jersey | 116 Oceanport Avenue Building 1 Little Silver, NJ 07739 | 732-741-5889 | |
| Business Telecom, LLC | 4005 North Rodney Parham Road Little Rock, AR 72212 | 855-352-2731 | |