| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (310) 503-50** | (310) 503-5000 - (310) 503-5099 | 15 |
| (310) 503-51** | (310) 503-5104 - (310) 503-5199 | 18 |
| (310) 503-52** | (310) 503-5205 - (310) 503-5299 | 21 |
| (310) 503-53** | (310) 503-5302 - (310) 503-5395 | 19 |
| (310) 503-54** | (310) 503-5400 - (310) 503-5496 | 17 |
| (310) 503-55** | (310) 503-5500 - (310) 503-5587 | 24 |
| (310) 503-56** | (310) 503-5600 - (310) 503-5693 | 14 |
| (310) 503-57** | (310) 503-5702 - (310) 503-5793 | 16 |
| (310) 503-58** | (310) 503-5803 - (310) 503-5898 | 18 |
| (310) 503-59** | (310) 503-5900 - (310) 503-5999 | 21 |
US Phone Directory: (310) 503-5***
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