| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 505-70** | (301) 505-7000 - (301) 505-7099 | 76 |
| (301) 505-71** | (301) 505-7102 - (301) 505-7199 | 79 |
| (301) 505-72** | (301) 505-7201 - (301) 505-7299 | 72 |
| (301) 505-74** | (301) 505-7474 - (301) 505-7474 | 1 |
| (301) 505-75** | (301) 505-7577 - (301) 505-7577 | 1 |
US Phone Directory: (301) 505-7***
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