Acronym |
Definition |
| 620 | Kansas - Southern, excluding Wichita area |
| 623 | Arizona - Outside of Phoenix. West Valley - Non-contiguous |
| 626 | California - Pasadena and San Gabriel Valley |
| 626 | California telephone area code |
| 627 | California - not currently active |
| 628 | California - Saan Francisco future overlay - not currently active |
| 630 | Illinois - Chicago suburbs |
| 631 | New York - Suffolk County, Long Island |
| 636 | Missouri - East Central outside of St. Louis |
| 641 | Iowa - Central and South Central |
| 646 | New York City, New York - Manhattan island overlay |
| 647 | Ontario - Toronto overlay |
| 649 | Turks and Caicos Islands |
| 650 | California - San Mateo County, West Bay Area |
| 651 | Minnesota - St. Paul and east suburbs |
| 657 | California - Northern Orange County overlay |
| 659 | Alabama - Central overlay - not currently active |
| 660 | Missouri |
| 661 | California |
| 662 | Mississippi |
| 664 | Montserrat - Caribbean area |
| 667 | Maryland |
| 669 | California |
| 670 | CNMI-Mariana Islands |
| 671 | Guam |
© Abbreviations.com