Phone Prefix | Range | Phones Recorded |
---|---|---|
(301) 681-50** | (301) 681-5000 - (301) 681-5099 | 73 |
(301) 681-51** | (301) 681-5100 - (301) 681-5199 | 77 |
(301) 681-52** | (301) 681-5201 - (301) 681-5299 | 68 |
(301) 681-53** | (301) 681-5300 - (301) 681-5398 | 72 |
(301) 681-54** | (301) 681-5400 - (301) 681-5499 | 66 |
(301) 681-55** | (301) 681-5500 - (301) 681-5599 | 75 |
(301) 681-56** | (301) 681-5600 - (301) 681-5699 | 73 |
(301) 681-57** | (301) 681-5700 - (301) 681-5799 | 73 |
(301) 681-58** | (301) 681-5800 - (301) 681-5899 | 66 |
(301) 681-59** | (301) 681-5900 - (301) 681-5999 | 74 |
US Phone Directory: (301) 681-5***
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