| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (240) 237-80** | (240) 237-8005 - (240) 237-8099 | 81 |
| (240) 237-81** | (240) 237-8100 - (240) 237-8197 | 83 |
| (240) 237-82** | (240) 237-8201 - (240) 237-8298 | 80 |
| (240) 237-83** | (240) 237-8300 - (240) 237-8397 | 84 |
| (240) 237-84** | (240) 237-8400 - (240) 237-8499 | 87 |
| (240) 237-85** | (240) 237-8500 - (240) 237-8597 | 86 |
| (240) 237-86** | (240) 237-8600 - (240) 237-8699 | 83 |
| (240) 237-87** | (240) 237-8700 - (240) 237-8799 | 85 |
| (240) 237-88** | (240) 237-8800 - (240) 237-8899 | 83 |
| (240) 237-89** | (240) 237-8900 - (240) 237-8989 | 79 |
US Phone Directory: (240) 237-8***
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