| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (240) 776-40** | (240) 776-4000 - (240) 776-4099 | 87 |
| (240) 776-41** | (240) 776-4100 - (240) 776-4199 | 74 |
| (240) 776-42** | (240) 776-4200 - (240) 776-4296 | 63 |
| (240) 776-43** | (240) 776-4301 - (240) 776-4399 | 70 |
| (240) 776-44** | (240) 776-4400 - (240) 776-4499 | 72 |
| (240) 776-45** | (240) 776-4500 - (240) 776-4598 | 61 |
| (240) 776-46** | (240) 776-4600 - (240) 776-4688 | 45 |
| (240) 776-47** | (240) 776-4725 - (240) 776-4764 | 4 |
| (240) 776-49** | (240) 776-4961 - (240) 776-4997 | 3 |
US Phone Directory: (240) 776-4***
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