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NPA: 203 [Rate centres in NPA 203] [Dial plan for NPA 203]

Block: A

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-715 A Meriden CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-716 A New Canaan CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2025-04-26   
203-717 A Greenwich CT   612K CSC VOICE, LLC 132      
203-718 A Cheshire CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2025-04-26   
203-719 A Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920      
203-720 A Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-721 A Waterbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-722 A Norwalk CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920      
203-723 A Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-724 A Stamford CT   829J PAETEC ITEL, LLC 920      
203-725 A Waterbury CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920      
203-726 A Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-727 A Bridgeport CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-728 A Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-729 A Naugatuck CT NGTCCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-730 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-731 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-732 A Ansonia-Derby CT DRBYCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-733 A Danbury CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-734 A Ansonia-Derby CT DRBYCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-735 A Ansonia-Derby CT DRBYCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-736 A Ansonia-Derby CT DRBYCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-737 A New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-738 A Guilford CT   829J PAETEC ITEL, LLC 920      
203-739 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-740 A Danbury CT BRFDCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-741 A Wallingford CT WLFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-742 A Greenwich CT WHPLNYYFDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 132      
203-743 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-744 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-745 A New Haven CT NWHNCT02GT0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-746 A Danbury CT NWFLCT00RS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-747 A New Haven CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-748 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-749 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-750 A Norwalk CT NRWLCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-751 A Ansonia-Derby CT DRBYCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-752 A New Haven CT NWHNCT03DS3  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-753 A Waterbury CT WTRBCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-754 A Waterbury CT WTRBCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-755 A Waterbury CT WTRBCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-756 A Waterbury CT WTRBCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-757 A Waterbury CT WTRBCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-758 A Waterbury CT PRSPCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-759 A Waterbury CT WTRBCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-760 A Bridgeport CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920      
203-761 A Wilton CT WLTOCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-762 A Wilton CT WLTOCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-763 A Fairfield CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-764 A New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-765 A New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-766 A New Haven CT HRFRCT0379Z  9748 AMERICAN MESSAGING SERVICES, LLC 920      
203-767 A Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-768 A Waterbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-769 A Greenwich CT GNWCCTGNDS0  9104 VERIZON NEW YORK, INC. 132      
203-770 A Danbury CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920      
203-771 A New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-772 A New Haven CT NWHNCT03DS3  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-773 A New Haven CT NWHNCT03DS3  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-774 A Wallingford CT   829J PAETEC ITEL, LLC 920      
203-775 A Danbury CT BRFDCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-776 A New Haven CT NWHNCT03DS3  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-777 A New Haven CT NWHNCT03DS3  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-778 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-779 A Madison CT   829J PAETEC ITEL, LLC 920      
203-780 A New Haven CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920      
203-781 A New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-782 A New Haven CT NWHNCT03DS3  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-783 A Milford CT MLFRCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-784 A New Haven CT NWHNCT03DS3  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-785 A New Haven CT NWHNCT03DS3  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-786 A New Haven CT NWHNCT03DS3  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-787 A New Haven CT NWHNCT03DS3  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-788 A Danbury CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920      
203-789 A New Haven CT NWHNCT03DS3  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-790 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-791 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-792 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-793 A Wallingford CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-794 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-795 A New Haven CT ORNGCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-796 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-797 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-798 A Danbury CT DNBRCT00DS1  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-799 A New Haven CT ORNGCT00RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-800 A New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-801 A New Canaan CT NWCNCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-802 A Waterbury CT BLFDCTAP2MD  5562 METROPCS, INC. 920      
203-803 A Norwalk CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-804 A New Haven CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920      
203-805 A Waterbury CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-806 A Cheshire CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-807 A Norwalk CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920      
203-808 A Waterbury CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-809 A New Haven CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920      
203-810 A Norwalk CT NRWLCT02YMD  4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-812 A New Haven CT NWHNCT03DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-813 A Byram CT WHPLNY02DS5  7140 TC SYSTEMS, INC. - NY 132      
203-814 A Bridgeport CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      
203-815 A New Haven CT HRFRCTASBMD  6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920      

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Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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