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 |
| 203-712
| 8 |
Huntington |
CT |
HRFRCTASDS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
920 |
|
2006-03-27 |
|
| 203-712
| 9 |
Huntington |
CT |
SMFRCTPU4MD |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
920 |
|
|
|
| 203-713
| A |
Milford |
CT |
|
639C ONVOY, LLC - CT |
920 |
|
|
|
| 203-713
| 0 |
Milford |
CT |
|
515J IP HORIZON LLC |
920 |
|
2022-08-04 |
|
| 203-713
| 1 |
Milford |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
2004-06-12 |
|
| 203-713
| 2 |
Milford |
CT |
|
145J TERRA NOVA TELECOM INC. |
920 |
|
2025-07-24 |
|
| 203-713
| 3 |
Milford |
CT |
|
145J TERRA NOVA TELECOM INC. |
920 |
|
2020-12-12 |
|
| 203-713
| 5 |
Milford |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2020-11-22 |
|
| 203-713
| 6 |
Milford |
CT |
NWHNCT02GT0 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
2006-07-07 |
|
| 203-713
| 7 |
Milford |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
2009-04-14 |
|
| 203-713
| 8 |
Milford |
CT |
|
612K CSC VOICE, LLC |
920 |
|
2010-06-25 |
|
| 203-713
| 9 |
Milford |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2021-06-03 |
|
| 203-714
| A |
Naugatuck |
CT |
|
624H ONVOY SPECTRUM, LLC |
920 |
|
|
|
| 203-714
| 0 |
Naugatuck |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2011-05-27 |
|
| 203-714
| 1 |
Naugatuck |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
2005-04-18 |
|
| 203-714
| 2 |
Naugatuck |
CT |
NWHNCT02XJX |
624H ONVOY SPECTRUM, LLC |
920 |
|
2021-11-08 |
|
| 203-714
| 3 |
Naugatuck |
CT |
|
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2026-01-15 |
|
| 203-714
| 4 |
Naugatuck |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2021-10-28 |
|
| 203-714
| 5 |
Naugatuck |
CT |
NWHNCT02XJX |
624H ONVOY SPECTRUM, LLC |
920 |
|
2024-10-22 |
|
| 203-714
| 6 |
Naugatuck |
CT |
HRFRCTCR3MD |
318J COMCAST IP PHONE, LLC |
920 |
|
2011-09-25 |
|
| 203-714
| 7 |
Naugatuck |
CT |
HRFRCT03GT0 |
9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT |
920 |
|
2007-09-07 |
|
| 203-714
| 8 |
Naugatuck |
CT |
|
829J PAETEC ITEL, LLC |
920 |
|
2009-07-29 |
|
| 203-714
| 9 |
Naugatuck |
CT |
|
145J TERRA NOVA TELECOM INC. |
920 |
|
2025-05-05 |
|
| 203-715
| A |
Meriden |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-715
| 0 |
Meriden |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-715
| 1 |
Meriden |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-715
| 2 |
Meriden |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-715
| 3 |
Meriden |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-715
| 4 |
Meriden |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-715
| 5 |
Meriden |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-715
| 6 |
Meriden |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-715
| 7 |
Meriden |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
|
|
| 203-715
| 8 |
Meriden |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2007-02-08 |
|
| 203-715
| 9 |
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 |
|
| 203-716
| 0 |
New Canaan |
CT |
SMFRCTDSDS0 |
7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
920 |
|
2003-09-30 |
|
| 203-716
| 1 |
New Canaan |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2008-11-29 |
|
| 203-716
| 3 |
New Canaan |
CT |
NWHNCT02XJX |
624H ONVOY SPECTRUM, LLC |
920 |
|
2021-11-08 |
|
| 203-716
| 4 |
New Canaan |
CT |
NWHNCT02XJX |
624H ONVOY SPECTRUM, LLC |
920 |
|
2024-10-22 |
|
| 203-716
| 5 |
New Canaan |
CT |
NWHNCT02XJX |
624H ONVOY SPECTRUM, LLC |
920 |
|
2021-02-24 |
|
| 203-716
| 6 |
New Canaan |
CT |
SMFRCTDSDS0 |
7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
920 |
|
2003-08-25 |
|
| 203-716
| 7 |
New Canaan |
CT |
SMFRCTDSDS0 |
7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT |
920 |
|
2003-09-30 |
|
| 203-716
| 8 |
New Canaan |
CT |
SMFRCTPU4MD |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
920 |
|
2002-10-07 |
|
| 203-717
| A |
Greenwich |
CT |
|
612K CSC VOICE, LLC |
132 |
|
|
|
| 203-717
| 0 |
Greenwich |
CT |
NYCMNYZRDBS |
539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT |
132 |
|
2012-09-15 |
|
| 203-717
| 1 |
Greenwich |
CT |
|
612K CSC VOICE, LLC |
132 |
|
2011-03-28 |
|
| 203-717
| 2 |
Greenwich |
CT |
NYCMNY83D1S |
350E YMAX COMMUNICATIONS CORP. - CT |
132 |
|
2011-07-11 |
|
| 203-717
| 3 |
Greenwich |
CT |
NYCMNY83D1S |
350E YMAX COMMUNICATIONS CORP. - CT |
132 |
|
2011-07-11 |
|
| 203-717
| 4 |
Greenwich |
CT |
NYCMNYBXDSL |
639C ONVOY, LLC - CT |
132 |
|
2016-10-31 |
|
| 203-717
| 5 |
Greenwich |
CT |
NYCMNYBXDSL |
639C ONVOY, LLC - CT |
132 |
|
2018-04-02 |
|
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Last updated: Sun, 17 May 2026 03:26:51 UTC
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