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 |
| 203-524
| 0 |
Stamford |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
|
|
| 203-524
| 1 |
Stamford |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2010-08-11 |
|
| 203-524
| 2 |
Stamford |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
|
|
| 203-524
| 3 |
Stamford |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
|
|
| 203-524
| 4 |
Stamford |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
|
|
| 203-524
| 5 |
Stamford |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
|
|
| 203-524
| 6 |
Stamford |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2010-08-11 |
|
| 203-524
| 7 |
Stamford |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2008-09-19 |
|
| 203-524
| 8 |
Stamford |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2010-05-22 |
|
| 203-524
| 9 |
Stamford |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2010-05-22 |
|
| 203-525
| A |
Waterbury |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
|
|
| 203-526
| A |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-526
| 0 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-526
| 1 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-526
| 2 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-526
| 3 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-526
| 4 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-526
| 5 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-526
| 6 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-526
| 7 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-526
| 8 |
Bridgeport |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
|
|
| 203-526
| 9 |
Bridgeport |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-527
| A |
Waterbury |
CT |
PRSPCT00RS0 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-527
| 0 |
Waterbury |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2010-02-28 |
|
| 203-527
| 1 |
Waterbury |
CT |
BLFDCTAP2MD |
5562 METROPCS, INC. |
920 |
|
2006-01-20 |
|
| 203-527
| 2 |
Waterbury |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2009-11-27 |
|
| 203-527
| 3 |
Waterbury |
CT |
HRFRCTCR3MD |
318J COMCAST IP PHONE, LLC |
920 |
|
2006-11-22 |
|
| 203-527
| 4 |
Waterbury |
CT |
HRFRCTCR3MD |
318J COMCAST IP PHONE, LLC |
920 |
|
2006-11-22 |
|
| 203-527
| 5 |
Waterbury |
CT |
HRFRCTCR3MD |
318J COMCAST IP PHONE, LLC |
920 |
|
2006-11-22 |
|
| 203-527
| 6 |
Waterbury |
CT |
HRFRCTCR3MD |
318J COMCAST IP PHONE, LLC |
920 |
|
2008-02-20 |
|
| 203-527
| 7 |
Waterbury |
CT |
HRFRCTCR3MD |
318J COMCAST IP PHONE, LLC |
920 |
|
2008-02-20 |
|
| 203-527
| 8 |
Waterbury |
CT |
HRFRCT03GT0 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
2006-07-07 |
|
| 203-527
| 9 |
Waterbury |
CT |
PRSPCT00RS0 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
|
|
| 203-528
| A |
Waterbury |
CT |
SMFRCTPU4MD |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
920 |
|
|
|
| 203-528
| 0 |
Waterbury |
CT |
SMFRCTPU4MD |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
920 |
|
|
|
| 203-528
| 1 |
Waterbury |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2007-12-17 |
|
| 203-528
| 2 |
Waterbury |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2005-10-16 |
|
| 203-528
| 3 |
Waterbury |
CT |
HRFRCTCR3MD |
318J COMCAST IP PHONE, LLC |
920 |
|
2007-08-21 |
|
| 203-528
| 4 |
Waterbury |
CT |
HRFRCTCR3MD |
318J COMCAST IP PHONE, LLC |
920 |
|
2007-08-21 |
|
| 203-528
| 5 |
Waterbury |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2007-12-17 |
|
| 203-528
| 6 |
Waterbury |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2007-12-17 |
|
| 203-528
| 7 |
Waterbury |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2006-09-15 |
|
| 203-528
| 8 |
Waterbury |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2007-12-17 |
|
| 203-528
| 9 |
Waterbury |
CT |
|
145J TERRA NOVA TELECOM INC. |
920 |
|
2022-04-17 |
|
| 203-529
| A |
Wilton |
CT |
NWHNCT02X5X |
7421 AT&T - LOCAL |
920 |
|
|
|
| 203-529
| 0 |
Wilton |
CT |
|
145J TERRA NOVA TELECOM INC. |
920 |
|
2025-07-24 |
|
| 203-529
| 1 |
Wilton |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2010-12-25 |
|
| 203-529
| 2 |
Wilton |
CT |
NRWLCTCVDS0 |
4950 CABLEVISION LIGHTPATH, INC. - CT |
920 |
|
2003-05-27 |
|
| 203-529
| 3 |
Wilton |
CT |
|
612K CSC VOICE, LLC |
920 |
|
2009-09-19 |
|
| 203-529
| 4 |
Wilton |
CT |
SMFRCTPU4MD |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
920 |
|
2004-04-16 |
|
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Last updated: Sun, 17 May 2026 03:26:51 UTC
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