| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 499-00** | (301) 499-0000 - (301) 499-0099 | 69 |
| (301) 499-01** | (301) 499-0106 - (301) 499-0199 | 65 |
| (301) 499-02** | (301) 499-0200 - (301) 499-0299 | 63 |
| (301) 499-03** | (301) 499-0301 - (301) 499-0399 | 56 |
| (301) 499-04** | (301) 499-0401 - (301) 499-0499 | 61 |
| (301) 499-05** | (301) 499-0502 - (301) 499-0598 | 55 |
| (301) 499-06** | (301) 499-0602 - (301) 499-0699 | 56 |
| (301) 499-07** | (301) 499-0700 - (301) 499-0799 | 63 |
| (301) 499-08** | (301) 499-0800 - (301) 499-0899 | 69 |
| (301) 499-09** | (301) 499-0903 - (301) 499-0999 | 62 |
US Phone Directory: (301) 499-0***
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