| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 526-70** | (301) 526-7003 - (301) 526-7098 | 32 |
| (301) 526-71** | (301) 526-7102 - (301) 526-7193 | 25 |
| (301) 526-72** | (301) 526-7202 - (301) 526-7299 | 37 |
| (301) 526-73** | (301) 526-7301 - (301) 526-7396 | 32 |
| (301) 526-74** | (301) 526-7400 - (301) 526-7499 | 34 |
| (301) 526-75** | (301) 526-7508 - (301) 526-7599 | 32 |
| (301) 526-76** | (301) 526-7600 - (301) 526-7695 | 30 |
| (301) 526-77** | (301) 526-7700 - (301) 526-7795 | 24 |
| (301) 526-78** | (301) 526-7809 - (301) 526-7894 | 23 |
| (301) 526-79** | (301) 526-7903 - (301) 526-7999 | 28 |
US Phone Directory: (301) 526-7***
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