| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 336-00** | (301) 336-0000 - (301) 336-0099 | 79 |
| (301) 336-01** | (301) 336-0101 - (301) 336-0199 | 79 |
| (301) 336-02** | (301) 336-0200 - (301) 336-0299 | 77 |
| (301) 336-03** | (301) 336-0300 - (301) 336-0398 | 74 |
| (301) 336-04** | (301) 336-0400 - (301) 336-0499 | 71 |
| (301) 336-05** | (301) 336-0500 - (301) 336-0599 | 72 |
| (301) 336-06** | (301) 336-0600 - (301) 336-0699 | 72 |
| (301) 336-07** | (301) 336-0701 - (301) 336-0798 | 79 |
| (301) 336-08** | (301) 336-0803 - (301) 336-0899 | 73 |
| (301) 336-09** | (301) 336-0900 - (301) 336-0999 | 74 |
US Phone Directory: (301) 336-0***
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