Local Calling Guide
Area code/prefix search
NPA: 475
[Rate centres in NPA 475]
[Dial plan for NPA 475]
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| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 475-400
| 1 |
Stamford |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2018-01-25 |
|
| 475-400
| 2 |
Stamford |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2018-01-25 |
|
| 475-400
| 3 |
Stamford |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2018-01-25 |
|
| 475-400
| 4 |
Stamford |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2018-01-25 |
|
| 475-400
| 5 |
Stamford |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2018-01-25 |
|
| 475-400
| 6 |
Stamford |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2018-01-25 |
|
| 475-400
| 7 |
Stamford |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2019-05-15 |
|
| 475-400
| 8 |
Stamford |
CT |
SMFRCTPU4MD |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
920 |
|
2020-02-10 |
|
| 475-400
| 9 |
Stamford |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2020-03-02 |
|
| 475-401
| A |
Guilford |
CT |
|
639C ONVOY, LLC - CT |
920 |
|
2026-09-20 |
|
| 475-401
| 0 |
Guilford |
CT |
|
639C ONVOY, LLC - CT |
920 |
|
2026-09-20 |
|
| 475-402
| A |
New Haven |
CT |
|
639C ONVOY, LLC - CT |
920 |
|
2026-09-27 |
|
| 475-402
| 0 |
New Haven |
CT |
|
639C ONVOY, LLC - CT |
920 |
|
2026-09-27 |
|
| 475-402
| 1 |
New Haven |
CT |
|
639C ONVOY, LLC - CT |
920 |
|
2026-09-27 |
|
| 475-402
| 2 |
New Haven |
CT |
|
639C ONVOY, LLC - CT |
920 |
|
2026-09-28 |
|
| 475-403
| A |
Waterbury |
CT |
|
639C ONVOY, LLC - CT |
920 |
|
2026-09-27 |
|
| 475-403
| 0 |
Waterbury |
CT |
|
639C ONVOY, LLC - CT |
920 |
|
2026-09-27 |
|
| 475-403
| 1 |
Waterbury |
CT |
|
639C ONVOY, LLC - CT |
920 |
|
2026-09-27 |
|
| 475-405
| A |
Cheshire |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
|
|
| 475-405
| 0 |
Cheshire |
CT |
NWHNCT02XJX |
624H ONVOY SPECTRUM, LLC |
920 |
|
2021-03-12 |
|
| 475-405
| 1 |
Cheshire |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2020-07-26 |
|
| 475-405
| 2 |
Cheshire |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2020-07-26 |
|
| 475-405
| 3 |
Cheshire |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2020-07-26 |
|
| 475-405
| 4 |
Cheshire |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2021-03-04 |
|
| 475-405
| 5 |
Cheshire |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2021-03-04 |
|
| 475-405
| 6 |
Cheshire |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2021-05-15 |
|
| 475-405
| 7 |
Cheshire |
CT |
|
639C ONVOY, LLC - CT |
920 |
|
2026-08-14 |
|
| 475-405
| 8 |
Cheshire |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2021-05-15 |
|
| 475-405
| 9 |
Cheshire |
CT |
HRFRCT0380Z |
539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT |
920 |
|
2020-09-26 |
|
| 475-410
| A |
Woodbury |
CT |
NWHNCT02XJX |
624H ONVOY SPECTRUM, LLC |
920 |
|
|
|
| 475-410
| 0 |
Woodbury |
CT |
NWHNCT02XJX |
624H ONVOY SPECTRUM, LLC |
920 |
|
2021-04-16 |
|
| 475-410
| 1 |
Woodbury |
CT |
|
515J IP HORIZON LLC |
920 |
|
2022-07-23 |
|
| 475-410
| 2 |
Woodbury |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2023-08-18 |
|
| 475-410
| 3 |
Woodbury |
CT |
NWHNCT02XJX |
624H ONVOY SPECTRUM, LLC |
920 |
|
2022-01-28 |
|
| 475-410
| 5 |
Woodbury |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2021-04-17 |
|
| 475-410
| 6 |
Woodbury |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2021-04-17 |
|
| 475-410
| 7 |
Woodbury |
CT |
NWHNCT02XJX |
624H ONVOY SPECTRUM, LLC |
920 |
|
2022-01-28 |
|
| 475-410
| 8 |
Woodbury |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2023-08-18 |
|
| 475-410
| 9 |
Woodbury |
CT |
HRFRCT03XMX |
145J TERRA NOVA TELECOM INC. |
920 |
|
2026-02-06 |
|
| 475-414
| A |
New Haven |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
|
|
| 475-414
| 0 |
New Haven |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-11-15 |
|
| 475-414
| 1 |
New Haven |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2016-08-01 |
|
| 475-414
| 2 |
New Haven |
CT |
HRFRCT03Y2X |
829J PAETEC ITEL, LLC |
920 |
|
2017-06-12 |
|
| 475-414
| 3 |
New Haven |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2017-12-27 |
|
| 475-414
| 4 |
New Haven |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2016-10-16 |
|
| 475-414
| 5 |
New Haven |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2016-10-16 |
|
| 475-414
| 6 |
New Haven |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2016-01-29 |
|
| 475-414
| 7 |
New Haven |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2018-01-10 |
|
| 475-414
| 8 |
New Haven |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2016-02-06 |
|
| 475-414
| 9 |
New Haven |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2016-02-06 |
|
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Last updated: Tue, 01 Sep 2026 00:40:05 UTC
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