| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (410) 507-40** | (410) 507-4005 - (410) 507-4094 | 47 |
| (410) 507-41** | (410) 507-4100 - (410) 507-4199 | 44 |
| (410) 507-42** | (410) 507-4200 - (410) 507-4297 | 40 |
| (410) 507-43** | (410) 507-4303 - (410) 507-4399 | 36 |
| (410) 507-44** | (410) 507-4404 - (410) 507-4499 | 37 |
| (410) 507-45** | (410) 507-4500 - (410) 507-4595 | 41 |
| (410) 507-46** | (410) 507-4601 - (410) 507-4696 | 24 |
| (410) 507-47** | (410) 507-4701 - (410) 507-4798 | 31 |
| (410) 507-48** | (410) 507-4800 - (410) 507-4897 | 39 |
| (410) 507-49** | (410) 507-4904 - (410) 507-4999 | 38 |
US Phone Directory: (410) 507-4***
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