| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 669-70** | (301) 669-7000 - (301) 669-7096 | 50 |
| (301) 669-71** | (301) 669-7101 - (301) 669-7199 | 64 |
| (301) 669-72** | (301) 669-7200 - (301) 669-7299 | 65 |
| (301) 669-73** | (301) 669-7300 - (301) 669-7399 | 59 |
| (301) 669-74** | (301) 669-7473 - (301) 669-7497 | 2 |
| (301) 669-75** | (301) 669-7550 - (301) 669-7558 | 6 |
| (301) 669-77** | (301) 669-7707 - (301) 669-7712 | 2 |
| (301) 669-78** | (301) 669-7801 - (301) 669-7897 | 31 |
| (301) 669-79** | (301) 669-7901 - (301) 669-7999 | 51 |
US Phone Directory: (301) 669-7***
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