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 |
| 475-393
| 6 |
Norwalk |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2018-01-30 |
|
| 475-393
| 7 |
Norwalk |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2018-02-27 |
|
| 475-393
| 8 |
Norwalk |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2017-12-16 |
|
| 475-393
| 9 |
Norwalk |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2017-09-10 |
|
| 475-394
| A |
Ansonia-Derby |
CT |
|
7421 AT&T - LOCAL |
920 |
|
2025-09-25 |
|
| 475-394
| 0 |
Ansonia-Derby |
CT |
|
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2026-02-22 |
|
| 475-394
| 3 |
Ansonia-Derby |
CT |
|
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2025-11-24 |
|
| 475-394
| 5 |
Ansonia-Derby |
CT |
|
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2025-10-03 |
|
| 475-394
| 9 |
Ansonia-Derby |
CT |
|
7421 AT&T - LOCAL |
920 |
|
2025-09-25 |
|
| 475-395
| A |
Norwalk |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
|
|
| 475-395
| 0 |
Norwalk |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-11-15 |
|
| 475-395
| 1 |
Norwalk |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-11-15 |
|
| 475-395
| 2 |
Norwalk |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-11-16 |
|
| 475-395
| 3 |
Norwalk |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-11-16 |
|
| 475-395
| 4 |
Norwalk |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-12-15 |
|
| 475-395
| 5 |
Norwalk |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-12-15 |
|
| 475-395
| 6 |
Norwalk |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-12-15 |
|
| 475-395
| 7 |
Norwalk |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-12-15 |
|
| 475-395
| 8 |
Norwalk |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2016-11-14 |
|
| 475-395
| 9 |
Norwalk |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2016-12-14 |
|
| 475-396
| A |
Bridgeport |
CT |
|
612K CSC VOICE, LLC |
920 |
|
2025-10-02 |
|
| 475-396
| 4 |
Bridgeport |
CT |
|
612K CSC VOICE, LLC |
920 |
|
2025-10-02 |
|
| 475-397
| A |
Norwalk |
CT |
|
4950 CABLEVISION LIGHTPATH, INC. - CT |
920 |
|
2025-12-11 |
|
| 475-397
| 0 |
Norwalk |
CT |
|
4950 CABLEVISION LIGHTPATH, INC. - CT |
920 |
|
2025-12-11 |
|
| 475-398
| A |
Huntington |
CT |
|
639C ONVOY, LLC - CT |
920 |
|
2026-02-02 |
|
| 475-398
| 0 |
Huntington |
CT |
|
639C ONVOY, LLC - CT |
920 |
|
2026-02-02 |
|
| 475-399
| A |
Stamford |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
|
|
| 475-399
| 0 |
Stamford |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-11-15 |
|
| 475-399
| 1 |
Stamford |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-11-15 |
|
| 475-399
| 2 |
Stamford |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-11-15 |
|
| 475-399
| 3 |
Stamford |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2024-09-24 |
|
| 475-399
| 4 |
Stamford |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-12-01 |
|
| 475-399
| 5 |
Stamford |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2024-09-24 |
|
| 475-399
| 6 |
Stamford |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-11-18 |
|
| 475-399
| 7 |
Stamford |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-11-18 |
|
| 475-399
| 8 |
Stamford |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2024-09-24 |
|
| 475-400
| A |
Stamford |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
|
|
| 475-400
| 0 |
Stamford |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2018-01-22 |
|
| 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 |
|
| 475-405
| 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 |
|
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Last updated: Thu, 05 Feb 2026 23:41:55 UTC
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