| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (240) 544-00** | (240) 544-0018 - (240) 544-0094 | 4 |
| (240) 544-01** | (240) 544-0105 - (240) 544-0180 | 7 |
| (240) 544-02** | (240) 544-0200 - (240) 544-0263 | 6 |
| (240) 544-03** | (240) 544-0312 - (240) 544-0382 | 4 |
| (240) 544-04** | (240) 544-0401 - (240) 544-0482 | 3 |
| (240) 544-05** | (240) 544-0511 - (240) 544-0593 | 5 |
| (240) 544-06** | (240) 544-0617 - (240) 544-0677 | 4 |
| (240) 544-07** | (240) 544-0701 - (240) 544-0744 | 4 |
| (240) 544-08** | (240) 544-0832 - (240) 544-0875 | 3 |
| (240) 544-09** | (240) 544-0916 - (240) 544-0916 | 1 |
US Phone Directory: (240) 544-0***
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