A rate center is an area in which all telephone calls are normally local to each other. Calls between nearby rate centers may also be local. Rate center names are usually town names, suburb names or in larger metro areas may be "Dialing zone" names.
The following area codes and exchanges are in rate center Hartford:
| (860) 202-XXXX | (860) 205-XXXX | (860) 206-XXXX |
| (860) 209-XXXX | (860) 212-XXXX | (860) 214-XXXX |
| (860) 216-XXXX | (860) 218-XXXX | (860) 220-XXXX |
| (860) 221-XXXX | (860) 226-XXXX | (860) 231-XXXX |
| (860) 232-XXXX | (860) 233-XXXX | (860) 236-XXXX |
| (860) 240-XXXX | (860) 241-XXXX | (860) 242-XXXX |
| (860) 243-XXXX | (860) 244-XXXX | (860) 246-XXXX |
| (860) 247-XXXX | (860) 249-XXXX | (860) 250-XXXX |
| (860) 251-XXXX | (860) 252-XXXX | (860) 256-XXXX |
| (860) 257-XXXX | (860) 258-XXXX | (860) 260-XXXX |
| (860) 263-XXXX | (860) 270-XXXX | (860) 273-XXXX |
| (860) 275-XXXX | (860) 277-XXXX | (860) 278-XXXX |
| (860) 279-XXXX | (860) 280-XXXX | (860) 282-XXXX |
| (860) 286-XXXX | (860) 289-XXXX | (860) 290-XXXX |
| (860) 291-XXXX | (860) 293-XXXX | (860) 296-XXXX |
| (860) 297-XXXX | (860) 299-XXXX | (860) 305-XXXX |
| (860) 306-XXXX | (860) 308-XXXX | (860) 310-XXXX |
| (860) 313-XXXX | (860) 320-XXXX | (860) 324-XXXX |
| (860) 330-XXXX | (860) 331-XXXX | (860) 332-XXXX |
| (860) 335-XXXX | (860) 340-XXXX | (860) 360-XXXX |
| (860) 363-XXXX | (860) 366-XXXX | (860) 369-XXXX |
| (860) 371-XXXX | (860) 372-XXXX | (860) 380-XXXX |
| (860) 402-XXXX | (860) 403-XXXX | (860) 416-XXXX |
| (860) 418-XXXX | (860) 422-XXXX | (860) 424-XXXX |
| (860) 436-XXXX | (860) 461-XXXX | (860) 462-XXXX |
| (860) 463-XXXX | (860) 466-XXXX | (860) 471-XXXX |
| (860) 472-XXXX | (860) 473-XXXX | (860) 478-XXXX |
| (860) 490-XXXX | (860) 493-XXXX | (860) 502-XXXX |
| (860) 504-XXXX | (860) 508-XXXX | (860) 509-XXXX |
| (860) 513-XXXX | (860) 519-XXXX | (860) 520-XXXX |
| (860) 521-XXXX | (860) 522-XXXX | (860) 523-XXXX |
| (860) 524-XXXX | (860) 525-XXXX | (860) 527-XXXX |
| (860) 528-XXXX | (860) 529-XXXX | (860) 534-XXXX |
| (860) 539-XXXX | (860) 541-XXXX | (860) 543-XXXX |
| (860) 545-XXXX | (860) 547-XXXX | (860) 548-XXXX |
| (860) 549-XXXX | (860) 550-XXXX | (860) 557-XXXX |
| (860) 558-XXXX | (860) 559-XXXX | (860) 560-XXXX |
| (860) 561-XXXX | (860) 563-XXXX | (860) 565-XXXX |
| (860) 566-XXXX | (860) 568-XXXX | (860) 569-XXXX |
| (860) 570-XXXX | (860) 571-XXXX | (860) 573-XXXX |
| (860) 586-XXXX | (860) 587-XXXX | (860) 588-XXXX |
| (860) 590-XXXX | (860) 593-XXXX | (860) 594-XXXX |
| (860) 595-XXXX | (860) 597-XXXX | (860) 604-XXXX |
| (860) 610-XXXX | (860) 614-XXXX | (860) 616-XXXX |
| (860) 622-XXXX | (860) 650-XXXX | (860) 655-XXXX |
| (860) 656-XXXX | (860) 660-XXXX | (860) 665-XXXX |
| (860) 666-XXXX | (860) 667-XXXX | (860) 670-XXXX |
| (860) 680-XXXX | (860) 690-XXXX | (860) 692-XXXX |
| (860) 695-XXXX | (860) 696-XXXX | (860) 702-XXXX |
| (860) 706-XXXX | (860) 707-XXXX | (860) 708-XXXX |
| (860) 712-XXXX | (860) 713-XXXX | (860) 714-XXXX |
| (860) 716-XXXX | (860) 720-XXXX | (860) 721-XXXX |
| (860) 722-XXXX | (860) 723-XXXX | (860) 724-XXXX |
| (860) 725-XXXX | (860) 726-XXXX | (860) 727-XXXX |
| (860) 728-XXXX | (860) 729-XXXX | (860) 748-XXXX |
| (860) 755-XXXX | (860) 756-XXXX | (860) 757-XXXX |
| (860) 760-XXXX | (860) 761-XXXX | (860) 762-XXXX |
| (860) 765-XXXX | (860) 768-XXXX | (860) 769-XXXX |
| (860) 778-XXXX | (860) 794-XXXX | (860) 796-XXXX |
| (860) 798-XXXX | (860) 802-XXXX | (860) 803-XXXX |
| (860) 805-XXXX | (860) 808-XXXX | (860) 810-XXXX |
| (860) 816-XXXX | (860) 817-XXXX | (860) 818-XXXX |
| (860) 819-XXXX | (860) 820-XXXX | (860) 825-XXXX |
| (860) 830-XXXX | (860) 833-XXXX | (860) 836-XXXX |
| (860) 838-XXXX | (860) 841-XXXX | (860) 842-XXXX |
| (860) 869-XXXX | (860) 874-XXXX | (860) 878-XXXX |
| (860) 881-XXXX | (860) 882-XXXX | (860) 883-XXXX |
| (860) 888-XXXX | (860) 895-XXXX | (860) 904-XXXX |
| (860) 906-XXXX | (860) 913-XXXX | (860) 916-XXXX |
| (860) 920-XXXX | (860) 922-XXXX | (860) 929-XXXX |
| (860) 930-XXXX | (860) 939-XXXX | (860) 944-XXXX |
| (860) 947-XXXX | (860) 948-XXXX | (860) 951-XXXX |
| (860) 952-XXXX | (860) 953-XXXX | (860) 954-XXXX |
| (860) 956-XXXX | (860) 965-XXXX | (860) 966-XXXX |
| (860) 967-XXXX | (860) 977-XXXX | (860) 978-XXXX |
| (860) 982-XXXX | (860) 983-XXXX | (860) 985-XXXX |
| (860) 986-XXXX | (860) 987-XXXX | (860) 989-XXXX |
| (860) 995-XXXX | (860) 997-XXXX | (860) 998-XXXX |