| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (503) 231-00** | (503) 231-0001 - (503) 231-0091 | 53 |
| (503) 231-01** | (503) 231-0100 - (503) 231-0199 | 50 |
| (503) 231-02** | (503) 231-0201 - (503) 231-0298 | 44 |
| (503) 231-03** | (503) 231-0300 - (503) 231-0396 | 45 |
| (503) 231-04** | (503) 231-0400 - (503) 231-0499 | 44 |
| (503) 231-05** | (503) 231-0500 - (503) 231-0599 | 46 |
| (503) 231-06** | (503) 231-0600 - (503) 231-0699 | 56 |
| (503) 231-07** | (503) 231-0700 - (503) 231-0797 | 52 |
| (503) 231-08** | (503) 231-0800 - (503) 231-0899 | 48 |
| (503) 231-09** | (503) 231-0900 - (503) 231-0999 | 46 |
US Phone Directory: (503) 231-0***
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