Local Calling Guide
Area code/prefix search
NPA: 203
[Rate centres in NPA 203]
[Dial plan for NPA 203]
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| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 203-541
| 3 |
Stamford |
CT |
SMFRCT01DS2 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-541
| 4 |
Stamford |
CT |
NRWLCTCVDS0 |
4950 CABLEVISION LIGHTPATH, INC. - CT |
920 |
|
2008-05-16 |
|
| 203-541
| 5 |
Stamford |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
2009-03-30 |
|
| 203-541
| 6 |
Stamford |
CT |
SMFRCT01DS2 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-541
| 7 |
Stamford |
CT |
SMFRCT01DS2 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-541
| 8 |
Stamford |
CT |
SMFRCT01DS2 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-541
| 9 |
Stamford |
CT |
SMFRCT01DS2 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-542
| A |
Greenwich |
CT |
WHPLNYWPX3X |
7421 AT&T - LOCAL |
132 |
|
|
|
| 203-542
| 0 |
Greenwich |
CT |
NYCMNY83DSZ |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
132 |
|
2005-05-27 |
|
| 203-542
| 1 |
Greenwich |
CT |
|
829J PAETEC ITEL, LLC |
132 |
|
2003-09-13 |
|
| 203-542
| 2 |
Greenwich |
CT |
GNWCCTGNX5Y |
4950 CABLEVISION LIGHTPATH, INC. - CT |
132 |
|
2004-11-18 |
|
| 203-542
| 3 |
Greenwich |
CT |
WHPLNYWPX3X |
7421 AT&T - LOCAL |
132 |
|
|
|
| 203-542
| 4 |
Greenwich |
CT |
GNWCCTGNX5Y |
4950 CABLEVISION LIGHTPATH, INC. - CT |
132 |
|
2003-03-20 |
|
| 203-542
| 5 |
Greenwich |
CT |
|
612K CSC VOICE, LLC |
132 |
|
2003-03-13 |
|
| 203-542
| 6 |
Greenwich |
CT |
GNWCCTGNX5Y |
4950 CABLEVISION LIGHTPATH, INC. - CT |
132 |
|
2003-03-13 |
|
| 203-542
| 7 |
Greenwich |
CT |
NYCMNY83DSZ |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
132 |
|
2005-05-27 |
|
| 203-542
| 8 |
Greenwich |
CT |
NYCMNY83DSZ |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
132 |
|
2002-06-30 |
|
| 203-542
| 9 |
Greenwich |
CT |
WHPLNYWPXOY |
199F BANDWIDTH.COM CLEC, LLC - CT |
132 |
|
2011-04-02 |
|
| 203-543
| A |
Bridgeport |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-544
| A |
Georgetown |
CT |
GRTWCT00RS0 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-544
| 0 |
Georgetown |
CT |
GRTWCT00RS0 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-544
| 1 |
Georgetown |
CT |
GRTWCT00RS0 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-544
| 2 |
Georgetown |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2014-10-23 |
|
| 203-544
| 3 |
Georgetown |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2014-11-21 |
|
| 203-544
| 4 |
Georgetown |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2012-09-07 |
|
| 203-544
| 5 |
Georgetown |
CT |
NWHNCT02GT0 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
2011-07-06 |
|
| 203-544
| 6 |
Georgetown |
CT |
NWLNCTCS6MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
920 |
|
2014-07-08 |
|
| 203-544
| 7 |
Georgetown |
CT |
GRTWCT00RS0 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-544
| 8 |
Georgetown |
CT |
GRTWCT00RS0 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-544
| 9 |
Georgetown |
CT |
GRTWCT00RS0 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-545
| A |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-545
| 0 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-545
| 1 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-545
| 2 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-545
| 3 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-545
| 4 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-545
| 5 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-545
| 6 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-545
| 7 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-545
| 8 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-545
| 9 |
Bridgeport |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-546
| A |
Danbury |
CT |
HRFRCTCRDS0 |
7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
920 |
|
|
|
| 203-546
| 0 |
Danbury |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2006-07-31 |
|
| 203-546
| 1 |
Danbury |
CT |
HRFRCTCRDS0 |
7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
920 |
|
|
|
| 203-546
| 2 |
Danbury |
CT |
HRFRCTCRDS0 |
7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
920 |
|
|
|
| 203-546
| 3 |
Danbury |
CT |
HRFRCTCRDS0 |
7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
920 |
|
|
|
| 203-546
| 4 |
Danbury |
CT |
HRFRCTCRDS0 |
7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
920 |
|
|
|
| 203-546
| 5 |
Danbury |
CT |
HRFRCTCRDS0 |
7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
920 |
|
|
|
| 203-546
| 6 |
Danbury |
CT |
HRFRCTCRDS0 |
7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
920 |
|
|
|
| 203-546
| 7 |
Danbury |
CT |
WLMNCT132MD |
792K CHARTER IP ENABLED SERVICES, LLC |
920 |
|
2010-07-17 |
|
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Last updated: Sun, 17 May 2026 03:26:51 UTC
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