Local Calling Guide
Area code/prefix search
NPA: 203
[Rate centres in NPA 203]
[Dial plan for NPA 203]
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 203-649
| A |
Cheshire |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-649
| 0 |
Cheshire |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-649
| 1 |
Cheshire |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-649
| 2 |
Cheshire |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-649
| 3 |
Cheshire |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-649
| 4 |
Cheshire |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-649
| 5 |
Cheshire |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-649
| 6 |
Cheshire |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-649
| 7 |
Cheshire |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-649
| 8 |
Cheshire |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2021-10-28 |
|
| 203-649
| 9 |
Cheshire |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-650
| A |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-650
| 0 |
Bridgeport |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-650
| 1 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-650
| 2 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-650
| 3 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-650
| 4 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-650
| 5 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-650
| 6 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-650
| 7 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-650
| 8 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-650
| 9 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-651
| A |
Cheshire |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-651
| 0 |
Cheshire |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-651
| 1 |
Cheshire |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-651
| 2 |
Cheshire |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-651
| 3 |
Cheshire |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-651
| 4 |
Cheshire |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-651
| 5 |
Cheshire |
CT |
SMFRCTPU4MD |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
920 |
|
2005-10-28 |
|
| 203-651
| 6 |
Cheshire |
CT |
HRFRCTASDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
920 |
|
2006-06-09 |
|
| 203-651
| 7 |
Cheshire |
CT |
SMFRCTPU4MD |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
920 |
|
2004-12-12 |
|
| 203-651
| 8 |
Cheshire |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2010-10-15 |
|
| 203-651
| 9 |
Cheshire |
CT |
|
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2002-12-11 |
|
| 203-652
| A |
New Canaan |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-652
| 0 |
New Canaan |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-652
| 1 |
New Canaan |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-652
| 2 |
New Canaan |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-652
| 3 |
New Canaan |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-652
| 4 |
New Canaan |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-652
| 5 |
New Canaan |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-652
| 6 |
New Canaan |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-652
| 7 |
New Canaan |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-652
| 8 |
New Canaan |
CT |
SMFRCTPU4MD |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
920 |
|
2006-01-02 |
|
| 203-652
| 9 |
New Canaan |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-653
| A |
Stamford |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-653
| 0 |
Stamford |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-653
| 1 |
Stamford |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-653
| 2 |
Stamford |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-653
| 3 |
Stamford |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-653
| 4 |
Stamford |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-653
| 5 |
Stamford |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-653
| 6 |
Stamford |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-653
| 7 |
Stamford |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-653
| 8 |
Stamford |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2011-05-27 |
|
| 203-653
| 9 |
Stamford |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-654
| A |
New Haven |
CT |
NHVNCT00RS0 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-654
| 0 |
New Haven |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2006-03-07 |
|
| 203-654
| 1 |
New Haven |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2003-04-05 |
|
| 203-654
| 2 |
New Haven |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
2007-12-04 |
|
| 203-654
| 3 |
New Haven |
CT |
SMFRCTPU4MD |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
920 |
|
2014-01-03 |
|
| 203-654
| 4 |
New Haven |
CT |
NHVNCT00RS0 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-654
| 5 |
New Haven |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2005-07-07 |
|
| 203-654
| 6 |
New Haven |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2004-03-17 |
|
| 203-654
| 7 |
New Haven |
CT |
SMFRCTPU4MD |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
920 |
|
2004-09-03 |
|
| 203-654
| 8 |
New Haven |
CT |
NHVNCT00RS0 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-654
| 9 |
New Haven |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2010-04-01 |
|
| 203-655
| A |
Darien |
CT |
DARNCT00RS1 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-656
| A |
Darien |
CT |
DARNCT00RS1 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-657
| A |
New Haven |
CT |
HRFRCT0379Z |
9748 AMERICAN MESSAGING SERVICES, LLC |
920 |
|
|
|
| 203-658
| A |
Stamford |
CT |
SMFRCTCTDS0 |
7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
920 |
|
|
|
| 203-658
| 0 |
Stamford |
CT |
SMFRCTCTDS0 |
7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
920 |
|
|
|
| 203-658
| 1 |
Stamford |
CT |
SMFRCTCTDS0 |
7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
920 |
|
|
|
| 203-658
| 2 |
Stamford |
CT |
NRWLCT02XMD |
4950 CABLEVISION LIGHTPATH, INC. - CT |
920 |
|
2011-10-21 |
|
| 203-658
| 3 |
Stamford |
CT |
HRFRCT0377Z |
350E YMAX COMMUNICATIONS CORP. - CT |
920 |
|
2011-10-12 |
|
| 203-658
| 4 |
Stamford |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2011-09-22 |
|
| 203-658
| 5 |
Stamford |
CT |
HRFRCT0377Z |
350E YMAX COMMUNICATIONS CORP. - CT |
920 |
|
2011-10-12 |
|
| 203-658
| 6 |
Stamford |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2012-04-20 |
|
| 203-658
| 7 |
Stamford |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2012-08-11 |
|
| 203-658
| 8 |
Stamford |
CT |
NRWLCT028MD |
4950 CABLEVISION LIGHTPATH, INC. - CT |
920 |
|
2012-08-18 |
|
| 203-658
| 9 |
Stamford |
CT |
SMFRCTCTDS0 |
7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
920 |
|
|
|
| 203-659
| A |
Fairfield |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-659
| 0 |
Fairfield |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-659
| 1 |
Fairfield |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-659
| 2 |
Fairfield |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-659
| 3 |
Fairfield |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-659
| 4 |
Fairfield |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-659
| 5 |
Fairfield |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-659
| 6 |
Fairfield |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-659
| 7 |
Fairfield |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-659
| 8 |
Fairfield |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2011-06-23 |
|
| 203-659
| 9 |
Fairfield |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-660
| A |
Byram |
CT |
|
639C ONVOY, LLC - CT |
132 |
|
|
|
| 203-660
| 0 |
Byram |
CT |
WHPLNYWPXOY |
199F BANDWIDTH.COM CLEC, LLC - CT |
132 |
|
2010-08-07 |
|
| 203-660
| 1 |
Byram |
CT |
NYCMNY83D1S |
350E YMAX COMMUNICATIONS CORP. - CT |
132 |
|
2008-06-01 |
|
| 203-660
| 2 |
Byram |
CT |
|
145J TERRA NOVA TELECOM INC. |
132 |
|
2022-04-17 |
|
| 203-660
| 3 |
Byram |
CT |
NYCMNYBXDSL |
639C ONVOY, LLC - CT |
132 |
|
2021-03-04 |
|
| 203-660
| 4 |
Byram |
CT |
NYCMNY37TMD |
624H ONVOY SPECTRUM, LLC |
132 |
|
2024-10-22 |
|
| 203-660
| 5 |
Byram |
CT |
NYCMNY37TMD |
624H ONVOY SPECTRUM, LLC |
132 |
|
2024-10-22 |
|
| 203-660
| 6 |
Byram |
CT |
WHPLNYYFDS0 |
7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
132 |
|
2003-06-08 |
|
| 203-660
| 7 |
Byram |
CT |
NYCMNY83D1S |
350E YMAX COMMUNICATIONS CORP. - CT |
132 |
|
2008-04-21 |
|
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Last updated: Sun, 01 Jun 2025 02:18:11 UTC
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