| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 587-80** | (301) 587-8000 - (301) 587-8099 | 66 |
| (301) 587-81** | (301) 587-8100 - (301) 587-8199 | 70 |
| (301) 587-82** | (301) 587-8202 - (301) 587-8299 | 55 |
| (301) 587-83** | (301) 587-8300 - (301) 587-8395 | 65 |
| (301) 587-84** | (301) 587-8400 - (301) 587-8499 | 55 |
| (301) 587-85** | (301) 587-8500 - (301) 587-8599 | 54 |
| (301) 587-86** | (301) 587-8600 - (301) 587-8698 | 63 |
| (301) 587-87** | (301) 587-8700 - (301) 587-8796 | 53 |
| (301) 587-88** | (301) 587-8800 - (301) 587-8899 | 71 |
| (301) 587-89** | (301) 587-8900 - (301) 587-8999 | 69 |
US Phone Directory: (301) 587-8***
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