| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (410) 939-40** | (410) 939-4000 - (410) 939-4098 | 72 |
| (410) 939-41** | (410) 939-4100 - (410) 939-4198 | 77 |
| (410) 939-42** | (410) 939-4200 - (410) 939-4299 | 74 |
| (410) 939-43** | (410) 939-4300 - (410) 939-4398 | 73 |
| (410) 939-44** | (410) 939-4401 - (410) 939-4499 | 76 |
| (410) 939-45** | (410) 939-4500 - (410) 939-4599 | 61 |
| (410) 939-46** | (410) 939-4600 - (410) 939-4699 | 76 |
| (410) 939-47** | (410) 939-4704 - (410) 939-4798 | 61 |
| (410) 939-48** | (410) 939-4800 - (410) 939-4899 | 65 |
| (410) 939-49** | (410) 939-4909 - (410) 939-4999 | 71 |
US Phone Directory: (410) 939-4***
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