Phone Prefix | Range | Phones Recorded |
---|---|---|
(301) 512-50** | (301) 512-5000 - (301) 512-5088 | 6 |
(301) 512-51** | (301) 512-5112 - (301) 512-5138 | 3 |
(301) 512-52** | (301) 512-5223 - (301) 512-5289 | 4 |
(301) 512-53** | (301) 512-5335 - (301) 512-5368 | 2 |
(301) 512-54** | (301) 512-5414 - (301) 512-5493 | 2 |
(301) 512-55** | (301) 512-5531 - (301) 512-5594 | 6 |
(301) 512-56** | (301) 512-5641 - (301) 512-5685 | 2 |
(301) 512-57** | (301) 512-5759 - (301) 512-5784 | 3 |
(301) 512-58** | (301) 512-5821 - (301) 512-5881 | 3 |
(301) 512-59** | (301) 512-5919 - (301) 512-5973 | 3 |
US Phone Directory: (301) 512-5***
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