Area Code 203 - Connecticut
Every 203 prefix with its city and carrier. Got a specific number? Search it here.
Area code 203 serves Connecticut (Eastern time zone) with 778 assigned prefixes. Major rate centers include New Haven, Stamford, Bridgeport, Norwalk, Danbury, Waterbury, Greenwich, Meriden. Received a call from a 203 number? Type the full number into the search box above to see its city, carrier, and community reports.
Prefixes in area code 203
| Prefix | City | State | Carrier |
|---|---|---|---|
| 203-663 | Norwalk | CT | PAETEC ITEL, LLC |
| 203-664 | Redding | CT | CABLEVISION LIGHTPATH, INC. - CT |
| 203-665 | Wilton | CT | PAETEC ITEL, LLC |
| 203-666 | Bridgeport | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-667 | Stamford | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-668 | New Haven | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-669 | Darien | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-670 | Fairfield | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-671 | New Haven | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-672 | New Haven | CT | PAETEC ITEL, LLC |
| 203-673 | Bridgeport | CT | AT&T - LOCAL |
| 203-674 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-675 | New Haven | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-676 | New Haven | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-677 | Wallingford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-678 | Wallingford | CT | PAETEC ITEL, LLC |
| 203-679 | Wallingford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-680 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-681 | Byram | CT | VERIZON NEW YORK, INC. |
| 203-682 | Westport | CT | PAETEC ITEL, LLC |
| 203-683 | Bridgeport | CT | PAETEC ITEL, LLC |
| 203-684 | New Haven | CT | METROPCS, INC. |
| 203-685 | Bridgeport | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-686 | Meriden | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-687 | New Haven | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-688 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-689 | Guilford | CT | AT&T - LOCAL |
| 203-690 | Bridgeport | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-691 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-692 | Fairfield | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-693 | Milford | CT | CABLEVISION LIGHTPATH, INC. - CT |
| 203-694 | Meriden | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-695 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-696 | Bridgeport | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-697 | Wallingford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-698 | Old Greenwich | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-699 | Cheshire | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-701 | Milford | CT | AT&T - LOCAL |
| 203-702 | Danbury | CT | PAETEC ITEL, LLC |
| 203-703 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-704 | Wolcott | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-705 | Stamford | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-706 | Waterbury | CT | PAETEC ITEL, LLC |
| 203-707 | Waterbury | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-708 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-709 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-710 | New Haven | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-712 | Huntington | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-713 | Milford | CT | ONVOY, LLC - CT |
| 203-714 | Naugatuck | CT | ONVOY SPECTRUM, LLC |
| 203-715 | Meriden | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-716 | New Canaan | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-717 | Greenwich | CT | CSC VOICE, LLC |
| 203-718 | Cheshire | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-719 | Stamford | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-720 | Naugatuck | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-721 | Waterbury | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-722 | Norwalk | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-723 | Naugatuck | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-724 | Stamford | CT | PAETEC ITEL, LLC |
| 203-725 | Waterbury | CT | COMCAST IP PHONE, LLC |
| 203-726 | Bridgeport | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-727 | Bridgeport | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-728 | Stamford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-729 | Naugatuck | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-730 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-731 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-732 | Ansonia-Derby | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-733 | Danbury | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-734 | Ansonia-Derby | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-735 | Ansonia-Derby | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-736 | Ansonia-Derby | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-737 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-738 | Guilford | CT | PAETEC ITEL, LLC |
| 203-739 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-740 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-741 | Wallingford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-742 | Greenwich | CT | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
| 203-743 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-744 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-745 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-746 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-747 | New Haven | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-748 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-749 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-750 | Norwalk | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-751 | Ansonia-Derby | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-752 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-753 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-754 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-755 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-756 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-757 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-758 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-759 | Waterbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-760 | Bridgeport | CT | PEERLESS NETWORK OF CONNECTICUT, LLC - CT |
| 203-761 | Wilton | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-762 | Wilton | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-763 | Fairfield | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-764 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-765 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-766 | New Haven | CT | AMERICAN MESSAGING SERVICES, LLC |
| 203-767 | Bridgeport | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-768 | Waterbury | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-769 | Greenwich | CT | VERIZON NEW YORK, INC. |
| 203-770 | Danbury | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-771 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-772 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-773 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-774 | Wallingford | CT | PAETEC ITEL, LLC |
| 203-775 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-776 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-777 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-778 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-779 | Madison | CT | PAETEC ITEL, LLC |
| 203-780 | New Haven | CT | PEERLESS NETWORK OF CONNECTICUT, LLC - CT |
| 203-781 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-782 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-783 | Milford | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-784 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-785 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-786 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-787 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-788 | Danbury | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-789 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-790 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-791 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-792 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-793 | Wallingford | CT | LEVEL 3 COMMUNICATIONS, LLC - CT |
| 203-794 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-795 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-796 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-797 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-798 | Danbury | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-799 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-800 | New Haven | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-801 | New Canaan | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-802 | Waterbury | CT | METROPCS, INC. |
| 203-803 | Norwalk | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-804 | New Haven | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-805 | Waterbury | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-806 | Cheshire | CT | TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
| 203-807 | Norwalk | CT | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 203-808 | Waterbury | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-809 | New Haven | CT | OMNIPOINT COMMUNICATIONS, INC. - CT |
| 203-810 | Norwalk | CT | CABLEVISION LIGHTPATH, INC. - CT |
| 203-812 | New Haven | CT | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
| 203-813 | Byram | CT | TC SYSTEMS, INC. - NY |
| 203-814 | Bridgeport | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
| 203-815 | New Haven | CT | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
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