| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 204-00** | (301) 204-0001 - (301) 204-0060 | 5 |
| (301) 204-01** | (301) 204-0141 - (301) 204-0166 | 2 |
| (301) 204-02** | (301) 204-0271 - (301) 204-0289 | 2 |
| (301) 204-03** | (301) 204-0328 - (301) 204-0347 | 3 |
| (301) 204-04** | (301) 204-0403 - (301) 204-0491 | 10 |
| (301) 204-05** | (301) 204-0582 - (301) 204-0582 | 1 |
| (301) 204-06** | (301) 204-0606 - (301) 204-0680 | 6 |
| (301) 204-07** | (301) 204-0709 - (301) 204-0787 | 4 |
| (301) 204-08** | (301) 204-0808 - (301) 204-0808 | 1 |
| (301) 204-09** | (301) 204-0913 - (301) 204-0974 | 4 |
US Phone Directory: (301) 204-0***
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