| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (240) 838-30** | (240) 838-3000 - (240) 838-3099 | 92 |
| (240) 838-31** | (240) 838-3100 - (240) 838-3199 | 87 |
| (240) 838-32** | (240) 838-3200 - (240) 838-3299 | 90 |
| (240) 838-33** | (240) 838-3300 - (240) 838-3399 | 84 |
| (240) 838-34** | (240) 838-3400 - (240) 838-3499 | 87 |
| (240) 838-35** | (240) 838-3500 - (240) 838-3599 | 83 |
| (240) 838-36** | (240) 838-3600 - (240) 838-3699 | 81 |
| (240) 838-37** | (240) 838-3702 - (240) 838-3799 | 71 |
| (240) 838-38** | (240) 838-3801 - (240) 838-3899 | 80 |
| (240) 838-39** | (240) 838-3900 - (240) 838-3998 | 86 |
US Phone Directory: (240) 838-3***
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