Local Calling Guide
Area code/prefix search
NPA: 203
[Rate centres in NPA 203]
[Dial plan for NPA 203]
Block: A
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 >>
| 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 |
|
|
|
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Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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