Area Codes > 564 > Central Office Codes
| Exchange | Rate Center | State | Operating Company |
|---|---|---|---|
| 564-211 | WA | ||
| 564-247 | WA | ||
| 564-311 | WA | ||
| 564-411 | WA | ||
| 564-500 | SNOHOMISH | WA | VERIZON NORTHWEST INC.-WA |
| 564-511 | WA | ||
| 564-555 | OLYMPIA | WA | QWEST CORPORATION |
| 564-564 | WA | ||
| 564-611 | WA | ||
| 564-700 | WA | ||
| 564-711 | WA | ||
| 564-729 | WA | ||
| 564-811 | WA | ||
| 564-911 | WA | ||
| 564-950 | WA | ||
| 564-958 | WA | ||
| 564-959 | WA | ||
| 564-976 | WA |