| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (203) 421-50** | (203) 421-5001 - (203) 421-5099 | 76 |
| (203) 421-51** | (203) 421-5100 - (203) 421-5199 | 77 |
| (203) 421-52** | (203) 421-5200 - (203) 421-5299 | 75 |
| (203) 421-53** | (203) 421-5300 - (203) 421-5396 | 72 |
| (203) 421-54** | (203) 421-5402 - (203) 421-5497 | 69 |
| (203) 421-55** | (203) 421-5501 - (203) 421-5599 | 81 |
| (203) 421-56** | (203) 421-5601 - (203) 421-5699 | 77 |
| (203) 421-57** | (203) 421-5700 - (203) 421-5799 | 76 |
| (203) 421-58** | (203) 421-5800 - (203) 421-5899 | 78 |
| (203) 421-59** | (203) 421-5900 - (203) 421-5999 | 75 |
US Phone Directory: (203) 421-5***
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