| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (240) 242-40** | (240) 242-4003 - (240) 242-4099 | 87 |
| (240) 242-41** | (240) 242-4100 - (240) 242-4199 | 92 |
| (240) 242-42** | (240) 242-4200 - (240) 242-4299 | 89 |
| (240) 242-43** | (240) 242-4300 - (240) 242-4399 | 93 |
| (240) 242-44** | (240) 242-4400 - (240) 242-4499 | 91 |
| (240) 242-45** | (240) 242-4500 - (240) 242-4599 | 91 |
| (240) 242-46** | (240) 242-4600 - (240) 242-4699 | 92 |
| (240) 242-47** | (240) 242-4700 - (240) 242-4799 | 91 |
| (240) 242-48** | (240) 242-4800 - (240) 242-4899 | 89 |
| (240) 242-49** | (240) 242-4900 - (240) 242-4999 | 94 |
US Phone Directory: (240) 242-4***
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