| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 927-50** | (301) 927-5000 - (301) 927-5097 | 66 |
| (301) 927-51** | (301) 927-5100 - (301) 927-5199 | 55 |
| (301) 927-52** | (301) 927-5200 - (301) 927-5299 | 65 |
| (301) 927-53** | (301) 927-5301 - (301) 927-5399 | 62 |
| (301) 927-54** | (301) 927-5400 - (301) 927-5498 | 60 |
| (301) 927-55** | (301) 927-5501 - (301) 927-5599 | 54 |
| (301) 927-56** | (301) 927-5600 - (301) 927-5698 | 62 |
| (301) 927-57** | (301) 927-5701 - (301) 927-5799 | 65 |
| (301) 927-58** | (301) 927-5801 - (301) 927-5899 | 63 |
| (301) 927-59** | (301) 927-5900 - (301) 927-5999 | 68 |
US Phone Directory: (301) 927-5***
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