Dover City Area Code List
| Area Codes | Country | State | City | Time Zone | Operating |
|---|---|---|---|---|---|
| 302 | US | Delaware - DE | Dover | Eastern | Details |
| 330 | US | Ohio - OH | Dover | Eastern | Details |
| 405 | US | Oklahoma - OK | Dover | Central | Details |
| 479 | US | Arkansas - AR | Dover | Central | Details |
| 508 | US | Massachusetts - MA | Dover | Eastern | Details |
| 603 | US | New Hampshire - NH | Dover | Eastern | Details |
| 606 | US | Kentucky - KY | Dover | Eastern / Central | Details |
| 717 | US | Pennsylvania - PA | Dover | Eastern | Details |
| 774 | US | Massachusetts - MA | Dover | Eastern | Details |
| 931 | US | Tennessee - TN | Dover | Eastern / Central | Details |
| 973 | US | New Jersey - NJ | Dover | Eastern | Details |