| Area Code | State | City |
| 600 | | Canadian Services |
| 601 | MS | Mississippi |
| 602 | AZ | Phoenix Arizona |
| 603 | NH | New Hampshire |
| 604 | BC | Canada: British Columbia, Greater Vancouver |
| 605 | SD | South Dakota |
| 606 | KY | East Kentucky: Ashland |
| 607 | NY | South Central New York: Ithaca, Binghamton |
| 608 | WI | SW Wisconsin: Madison |
| 609 | NJ | South New Jersey: Trenton |
| 610 | PA | SE Pennsylvania: Allentown, Reading |
| 612 | MN | Central Minnesota, Minneapolis |
| 613 | ON | Canada: SE Ontario, Ottawa |
| 614 | OH | SE Ohio: Columbus |
| 615 | TN | East Tennessee: Nashville |
| 616 | MI | West Michigan: Grand Rapids |
| 617 | MA | East Massachusetts: Boston |
| 618 | IL | South Illinois |
| 619 | CA | South California: San Diego |
| 620 | KS | South Kansas: Wichita |
| 623 | AZ | Arizona |
| 626 | CA | SE California: Pasadena |
| 630 | IL | NE Illinois, Oak Brook or Chicago suburbs |
| 631 | NY | New York: Suffolk County |
| 636 | MO | Missouri |
| 641 | IA | Iowa |
| 646 | NY | Manhattan New York |
| 647 | ON | South Central Ontario |
| 650 | CA | Peninsula south of San Francisco -- San Mateo county, parts of Santa Clara county |
| 651 | MN | Central Minnesota, St. Paul |
| 657 | CA | North California |
| 660 | MO | North Missouri |
| 661 | CA | California: N. Los Angeles, Mckittrick, Mojave, Newhall, Oildale, Palmdal, Taft, Tehachapi, Bakersfield, Earlimart, Lancaster |
| 662 | MS | Mississippi |
| 664 | | Montserrat |
| 669 | CA | Central California coast |
| 671 | | Guam |
| 678 | GA | North Georgia: Atlanta |
| 682 | TX | Fort Worth Texas |
| 689 | FL | Central Florida |
| 989 | MI | Michigan |
area codes: 200, 300, 400, 500, 600, 700, 800, 900
