| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 204-70** | (301) 204-7020 - (301) 204-7091 | 4 |
| (301) 204-71** | (301) 204-7101 - (301) 204-7190 | 6 |
| (301) 204-72** | (301) 204-7202 - (301) 204-7266 | 4 |
| (301) 204-73** | (301) 204-7370 - (301) 204-7383 | 2 |
| (301) 204-74** | (301) 204-7414 - (301) 204-7496 | 3 |
| (301) 204-75** | (301) 204-7527 - (301) 204-7578 | 5 |
| (301) 204-76** | (301) 204-7613 - (301) 204-7678 | 5 |
| (301) 204-77** | (301) 204-7733 - (301) 204-7798 | 3 |
| (301) 204-78** | (301) 204-7820 - (301) 204-7889 | 5 |
| (301) 204-79** | (301) 204-7918 - (301) 204-7992 | 3 |
US Phone Directory: (301) 204-7***
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