Phone Prefix | Range | Phones Recorded |
---|---|---|
(301) 604-50** | (301) 604-5000 - (301) 604-5099 | 66 |
(301) 604-51** | (301) 604-5101 - (301) 604-5199 | 67 |
(301) 604-52** | (301) 604-5200 - (301) 604-5298 | 52 |
(301) 604-53** | (301) 604-5301 - (301) 604-5399 | 65 |
(301) 604-54** | (301) 604-5400 - (301) 604-5499 | 74 |
(301) 604-55** | (301) 604-5500 - (301) 604-5598 | 67 |
(301) 604-56** | (301) 604-5600 - (301) 604-5619 | 11 |
(301) 604-57** | (301) 604-5760 - (301) 604-5799 | 29 |
(301) 604-58** | (301) 604-5800 - (301) 604-5897 | 69 |
(301) 604-59** | (301) 604-5900 - (301) 604-5999 | 69 |
US Phone Directory: (301) 604-5***
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