| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (203) 300-50** | (203) 300-5003 - (203) 300-5099 | 90 |
| (203) 300-51** | (203) 300-5101 - (203) 300-5199 | 94 |
| (203) 300-52** | (203) 300-5200 - (203) 300-5299 | 87 |
| (203) 300-53** | (203) 300-5300 - (203) 300-5399 | 90 |
| (203) 300-54** | (203) 300-5401 - (203) 300-5499 | 83 |
| (203) 300-55** | (203) 300-5500 - (203) 300-5599 | 89 |
| (203) 300-56** | (203) 300-5600 - (203) 300-5699 | 93 |
| (203) 300-57** | (203) 300-5701 - (203) 300-5797 | 85 |
| (203) 300-58** | (203) 300-5800 - (203) 300-5899 | 95 |
| (203) 300-59** | (203) 300-5900 - (203) 300-5969 | 59 |
US Phone Directory: (203) 300-5***
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