| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (703) 550-50** | (703) 550-5000 - (703) 550-5099 | 27 |
| (703) 550-51** | (703) 550-5100 - (703) 550-5185 | 45 |
| (703) 550-53** | (703) 550-5301 - (703) 550-5397 | 43 |
| (703) 550-54** | (703) 550-5402 - (703) 550-5497 | 16 |
| (703) 550-55** | (703) 550-5500 - (703) 550-5599 | 50 |
| (703) 550-56** | (703) 550-5600 - (703) 550-5697 | 50 |
| (703) 550-58** | (703) 550-5800 - (703) 550-5899 | 41 |
US Phone Directory: (703) 550-5***
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