| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (240) 603-80** | (240) 603-8006 - (240) 603-8097 | 10 |
| (240) 603-81** | (240) 603-8113 - (240) 603-8114 | 2 |
| (240) 603-82** | (240) 603-8201 - (240) 603-8282 | 11 |
| (240) 603-83** | (240) 603-8319 - (240) 603-8395 | 8 |
| (240) 603-84** | (240) 603-8404 - (240) 603-8496 | 13 |
| (240) 603-85** | (240) 603-8530 - (240) 603-8596 | 4 |
| (240) 603-86** | (240) 603-8615 - (240) 603-8697 | 10 |
| (240) 603-87** | (240) 603-8750 - (240) 603-8786 | 9 |
| (240) 603-88** | (240) 603-8805 - (240) 603-8899 | 12 |
| (240) 603-89** | (240) 603-8908 - (240) 603-8988 | 11 |
US Phone Directory: (240) 603-8***
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