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- Bealls Communications Group
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- Bechtel Telecommunications Crp
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- Beeper Repair Three
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- Bentus Networks LLC
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- Bes Tel Inc
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- Bestcom Inc
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- Bit Central Inc
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- Black Box Network Svc
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- Blaze International LLC
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- Block Town Satellite Uplink
- Blue Chip Telecom Inc
- Blue Communication
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- BN-Rrsf Telecom
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- Bob Mills Communications
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- Boe-Tel
- Bonneville Telecommunications
- Bootheel Telecommunication
- Bordercomm
- Borthern Development Corp
- Bortly Neon Corp USA
- Bos' N
- Boston Applied Technologies
- Boston Conferencing Inc
- Bottom Line Communications
- Bottom Line Svc Inc
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- Bowen Research & Development
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- Bowthorpe Telecom Group
- Box Telecom
- Bradley Broadcast Sales
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- Brandenburg Telecom LLC
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