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| ACC TELECOM CORP | VIENNA, VA | (703) 281-3400 |
| ANSWERING SERVICE OF TYSONS CORNERS | VIENNA, VA | (703) 255-4525 |
| CINGULAR WIRELESS | 1927 OLD GALLOWS RD VIENNA, VA | (703) 318-2060 |
| DIGI-TEL COMMUNICATIONS | 8501 TYCO RD VIENNA, VA | (703) 883-9740 |
| FOX MIKE | VIENNA, VA | (703) 319-1919 |
| MICROTECH-TEL | 8618 WESTWOOD CENTER DR VIENNA, VA | (703) 714-2320 |
| SHORELINE COMMUNICATIONS | 8000 TOWERS CRESCENT DR VIENNA, VA | (703) 848-1848 |
| THRASHER TECHNOLOGIES LLC | 1850 BRENTHILL WAY VIENNA, VA | (703) 749-9360 |
| VOICESTREAM WIRELESS | 8150 LEESBURG PIKE VIENNA, VA | (703) 893-6161 |
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