| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (301) 270-80** | (301) 270-8000 - (301) 270-8096 | 57 |
| (301) 270-81** | (301) 270-8100 - (301) 270-8199 | 49 |
| (301) 270-82** | (301) 270-8201 - (301) 270-8297 | 54 |
| (301) 270-83** | (301) 270-8305 - (301) 270-8399 | 47 |
| (301) 270-84** | (301) 270-8400 - (301) 270-8491 | 53 |
| (301) 270-85** | (301) 270-8501 - (301) 270-8598 | 55 |
| (301) 270-86** | (301) 270-8606 - (301) 270-8699 | 53 |
| (301) 270-87** | (301) 270-8700 - (301) 270-8799 | 62 |
| (301) 270-88** | (301) 270-8801 - (301) 270-8898 | 56 |
| (301) 270-89** | (301) 270-8905 - (301) 270-8999 | 64 |
US Phone Directory: (301) 270-8***
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