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 |
| 475-365
| 7 |
New Haven |
CT |
|
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2025-03-24 |
|
| 475-365
| 8 |
New Haven |
CT |
HRFRCT0389Z |
490J BOOST SUBSCRIBERCO L.L.C. |
920 |
|
2024-06-16 |
|
| 475-365
| 9 |
New Haven |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2024-06-10 |
|
| 475-366
| A |
Ansonia-Derby |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2024-04-27 |
|
| 475-366
| 0 |
Ansonia-Derby |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2024-05-03 |
|
| 475-366
| 1 |
Ansonia-Derby |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2024-07-15 |
|
| 475-366
| 2 |
Ansonia-Derby |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2024-07-15 |
|
| 475-366
| 3 |
Ansonia-Derby |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2024-08-16 |
|
| 475-366
| 4 |
Ansonia-Derby |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2024-09-21 |
|
| 475-366
| 5 |
Ansonia-Derby |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2024-07-07 |
|
| 475-366
| 6 |
Ansonia-Derby |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2024-07-07 |
|
| 475-366
| 7 |
Ansonia-Derby |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2024-07-07 |
|
| 475-366
| 8 |
Ansonia-Derby |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2024-04-27 |
|
| 475-366
| 9 |
Ansonia-Derby |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2024-04-27 |
|
| 475-367
| A |
Byram |
CT |
NYCMNYBXDSL |
639C ONVOY, LLC - CT |
132 |
|
2024-05-19 |
|
| 475-367
| 0 |
Byram |
CT |
NYCMNYBXDSL |
639C ONVOY, LLC - CT |
132 |
|
2024-05-19 |
|
| 475-367
| 1 |
Byram |
CT |
NYCMNYBXDSL |
639C ONVOY, LLC - CT |
132 |
|
2024-06-22 |
|
| 475-367
| 2 |
Byram |
CT |
|
639C ONVOY, LLC - CT |
132 |
|
2025-04-06 |
|
| 475-367
| 8 |
Byram |
CT |
NYCMNYBXDSL |
639C ONVOY, LLC - CT |
132 |
|
2024-07-29 |
|
| 475-367
| 9 |
Byram |
CT |
|
639C ONVOY, LLC - CT |
132 |
|
2025-02-01 |
|
| 475-368
| A |
Darien |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2024-06-22 |
|
| 475-368
| 0 |
Darien |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2024-06-22 |
|
| 475-368
| 1 |
Darien |
CT |
NRWLCT02Y0X |
425J CSC WIRELESS, LLC |
920 |
|
2024-07-25 |
|
| 475-368
| 6 |
Darien |
CT |
|
425J CSC WIRELESS, LLC |
920 |
|
2025-05-02 |
|
| 475-368
| 7 |
Darien |
CT |
|
425J CSC WIRELESS, LLC |
920 |
|
2025-04-14 |
|
| 475-368
| 8 |
Darien |
CT |
NRWLCT02Y0X |
425J CSC WIRELESS, LLC |
920 |
|
2024-07-25 |
|
| 475-368
| 9 |
Darien |
CT |
|
425J CSC WIRELESS, LLC |
920 |
|
2025-05-02 |
|
| 475-369
| A |
Huntington |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2024-07-06 |
|
| 475-369
| 0 |
Huntington |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2024-07-06 |
|
| 475-369
| 1 |
Huntington |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2024-07-15 |
|
| 475-369
| 2 |
Huntington |
CT |
HRFRCT0389Z |
490J BOOST SUBSCRIBERCO L.L.C. |
920 |
|
2025-02-20 |
|
| 475-369
| 3 |
Huntington |
CT |
HRFRCT0389Z |
490J BOOST SUBSCRIBERCO L.L.C. |
920 |
|
2025-01-09 |
|
| 475-369
| 4 |
Huntington |
CT |
HRFRCT0389Z |
490J BOOST SUBSCRIBERCO L.L.C. |
920 |
|
2024-09-30 |
|
| 475-369
| 5 |
Huntington |
CT |
SMFRCTPU4MD |
4800 LEVEL 3 COMMUNICATIONS, LLC - CT |
920 |
|
2024-11-04 |
|
| 475-369
| 6 |
Huntington |
CT |
|
639C ONVOY, LLC - CT |
920 |
|
2025-10-26 |
|
| 475-369
| 7 |
Huntington |
CT |
|
321J HD CARRIER LLC |
920 |
|
2025-08-15 |
|
| 475-369
| 8 |
Huntington |
CT |
|
145J TERRA NOVA TELECOM INC. |
920 |
|
2025-10-13 |
|
| 475-369
| 9 |
Huntington |
CT |
|
639C ONVOY, LLC - CT |
920 |
|
2025-02-01 |
|
| 475-370
| A |
Danbury |
CT |
HRFRCT0389Z |
490J BOOST SUBSCRIBERCO L.L.C. |
920 |
|
2024-07-21 |
|
| 475-370
| 0 |
Danbury |
CT |
HRFRCT0389Z |
490J BOOST SUBSCRIBERCO L.L.C. |
920 |
|
2024-07-21 |
|
| 475-370
| 1 |
Danbury |
CT |
|
7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT |
920 |
|
2025-08-22 |
|
| 475-370
| 2 |
Danbury |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2024-08-27 |
|
| 475-370
| 3 |
Danbury |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2024-08-27 |
|
| 475-370
| 4 |
Danbury |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2025-08-13 |
|
| 475-370
| 5 |
Danbury |
CT |
|
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2025-02-11 |
|
| 475-370
| 6 |
Danbury |
CT |
|
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2025-08-13 |
|
| 475-370
| 7 |
Danbury |
CT |
|
490J BOOST SUBSCRIBERCO L.L.C. |
920 |
|
2025-11-20 |
|
| 475-370
| 8 |
Danbury |
CT |
HRFRCTBC2MD |
073H TELNYX LLC |
920 |
|
2024-07-22 |
|
| 475-370
| 9 |
Danbury |
CT |
HRFRCTBC2MD |
073H TELNYX LLC |
920 |
|
2024-12-22 |
|
| 475-371
| A |
New Canaan |
CT |
HRFRCT0389Z |
490J BOOST SUBSCRIBERCO L.L.C. |
920 |
|
2024-07-21 |
|
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Last updated: Thu, 05 Feb 2026 23:41:55 UTC
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