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 |
| 203-663
| 3 |
Norwalk |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2011-10-13 |
|
| 203-663
| 4 |
Norwalk |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-663
| 5 |
Norwalk |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-663
| 6 |
Norwalk |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-663
| 7 |
Norwalk |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-663
| 8 |
Norwalk |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-663
| 9 |
Norwalk |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-664
| A |
Redding |
CT |
NRWLCT02XMD |
4950 CABLEVISION LIGHTPATH, INC. - CT |
920 |
|
|
|
| 203-664
| 1 |
Redding |
CT |
|
612K CSC VOICE, LLC |
920 |
|
|
|
| 203-664
| 2 |
Redding |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2021-08-19 |
|
| 203-664
| 3 |
Redding |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2021-08-19 |
|
| 203-664
| 4 |
Redding |
CT |
|
612K CSC VOICE, LLC |
920 |
|
2013-06-08 |
|
| 203-664
| 5 |
Redding |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2015-05-15 |
|
| 203-664
| 6 |
Redding |
CT |
NWHNCT02XJX |
624H ONVOY SPECTRUM, LLC |
920 |
|
2021-11-08 |
|
| 203-664
| 7 |
Redding |
CT |
SMFRCTPU4MD |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
920 |
|
2014-07-06 |
|
| 203-664
| 8 |
Redding |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2016-07-16 |
|
| 203-665
| A |
Wilton |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-665
| 0 |
Wilton |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-665
| 1 |
Wilton |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-665
| 2 |
Wilton |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-665
| 3 |
Wilton |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-665
| 4 |
Wilton |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
2006-07-14 |
|
| 203-665
| 5 |
Wilton |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-665
| 6 |
Wilton |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-665
| 7 |
Wilton |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-665
| 8 |
Wilton |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2008-11-29 |
|
| 203-665
| 9 |
Wilton |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
|
|
| 203-666
| A |
Bridgeport |
CT |
SMFRCTPU4MD |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
920 |
|
|
|
| 203-666
| 0 |
Bridgeport |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2013-12-09 |
|
| 203-666
| 1 |
Bridgeport |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2013-12-09 |
|
| 203-666
| 2 |
Bridgeport |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2014-09-08 |
|
| 203-666
| 3 |
Bridgeport |
CT |
SMFRCTCTDS0 |
7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
920 |
|
2013-11-29 |
|
| 203-666
| 4 |
Bridgeport |
CT |
SMFRCTPU4MD |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
920 |
|
2013-11-17 |
|
| 203-666
| 5 |
Bridgeport |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2014-09-08 |
|
| 203-666
| 6 |
Bridgeport |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2014-04-01 |
|
| 203-666
| 7 |
Bridgeport |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2014-04-01 |
|
| 203-666
| 8 |
Bridgeport |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2014-09-08 |
|
| 203-666
| 9 |
Bridgeport |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2014-04-01 |
|
| 203-667
| A |
Stamford |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-667
| 0 |
Stamford |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-667
| 1 |
Stamford |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-667
| 2 |
Stamford |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-667
| 3 |
Stamford |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-667
| 4 |
Stamford |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-667
| 5 |
Stamford |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-667
| 6 |
Stamford |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-667
| 7 |
Stamford |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-667
| 8 |
Stamford |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-667
| 9 |
Stamford |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-668
| A |
New Haven |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2024-02-09 |
|
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Last updated: Sun, 17 May 2026 03:26:51 UTC
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