| Prefix | State | OCN | Company | Ratecenter |
|---|---|---|---|---|
| +1 564-240 | WA | 9638 | Qwest corporation | Silverdale |
| +1 564-397 | WA | 7172 | Electric lightwave, llc dba allstream - or | Vancouver |
| +1 564-777 | WA | 145J | Terra nova telecom inc. | Castlerock |
| +1 564-888 | WA | 145J | Terra nova telecom inc. | Vancouver |
| +1 564-999 | WA | 145J | Terra nova telecom inc. | Olympia |