| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (410) 257-70** | (410) 257-7000 - (410) 257-7099 | 82 |
| (410) 257-71** | (410) 257-7100 - (410) 257-7199 | 82 |
| (410) 257-72** | (410) 257-7200 - (410) 257-7298 | 68 |
| (410) 257-73** | (410) 257-7300 - (410) 257-7399 | 77 |
| (410) 257-74** | (410) 257-7401 - (410) 257-7498 | 85 |
| (410) 257-75** | (410) 257-7500 - (410) 257-7599 | 75 |
| (410) 257-76** | (410) 257-7604 - (410) 257-7699 | 75 |
| (410) 257-77** | (410) 257-7700 - (410) 257-7799 | 77 |
| (410) 257-78** | (410) 257-7800 - (410) 257-7899 | 75 |
| (410) 257-79** | (410) 257-7900 - (410) 257-7999 | 73 |
US Phone Directory: (410) 257-7***
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