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 |
| 475-550
| 2 |
Stamford |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2022-10-24 |
|
| 475-550
| 3 |
Stamford |
CT |
HRFRCTBC2MD |
073H TELNYX LLC |
920 |
|
2023-01-23 |
|
| 475-550
| 4 |
Stamford |
CT |
MDTWCTNIBMD |
4036 NEW CINGULAR WIRELESS PCS, LLC - DC |
920 |
|
2023-02-12 |
|
| 475-550
| 5 |
Stamford |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2023-08-06 |
|
| 475-550
| 6 |
Stamford |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2022-12-19 |
|
| 475-550
| 7 |
Stamford |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2022-12-19 |
|
| 475-550
| 8 |
Stamford |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2022-12-19 |
|
| 475-550
| 9 |
Stamford |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2022-12-19 |
|
| 475-557
| A |
Waterbury |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
|
|
| 475-557
| 0 |
Waterbury |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2020-08-20 |
|
| 475-557
| 1 |
Waterbury |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2019-02-28 |
|
| 475-557
| 2 |
Waterbury |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2019-06-14 |
|
| 475-557
| 3 |
Waterbury |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2019-06-14 |
|
| 475-557
| 4 |
Waterbury |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2020-08-20 |
|
| 475-557
| 5 |
Waterbury |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2020-06-05 |
|
| 475-557
| 6 |
Waterbury |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2020-09-12 |
|
| 475-557
| 7 |
Waterbury |
CT |
HRFRCTCR3MD |
318J COMCAST IP PHONE, LLC |
920 |
|
2019-01-26 |
|
| 475-557
| 8 |
Waterbury |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2019-03-30 |
|
| 475-557
| 9 |
Waterbury |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2019-03-30 |
|
| 475-558
| A |
New Canaan |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
|
|
| 475-558
| 0 |
New Canaan |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2015-06-25 |
|
| 475-558
| 1 |
New Canaan |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2015-06-25 |
|
| 475-558
| 2 |
New Canaan |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2019-08-09 |
|
| 475-558
| 3 |
New Canaan |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2019-08-09 |
|
| 475-558
| 4 |
New Canaan |
CT |
HRFRCT0379Z |
199F BANDWIDTH.COM CLEC, LLC - CT |
920 |
|
2020-02-24 |
|
| 475-558
| 5 |
New Canaan |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2020-07-06 |
|
| 475-558
| 6 |
New Canaan |
CT |
HRFRCT0380Z |
539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT |
920 |
|
2018-08-31 |
|
| 475-558
| 7 |
New Canaan |
CT |
HRFRCT03HMD |
073H TELNYX LLC |
920 |
|
2017-06-05 |
|
| 475-558
| 8 |
New Canaan |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2015-07-03 |
|
| 475-558
| 9 |
New Canaan |
CT |
|
612K CSC VOICE, LLC |
920 |
|
2015-06-26 |
|
| 475-559
| A |
Waterbury |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
|
|
| 475-559
| 0 |
Waterbury |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-10-19 |
|
| 475-559
| 1 |
Waterbury |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-10-20 |
|
| 475-559
| 2 |
Waterbury |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-10-20 |
|
| 475-559
| 3 |
Waterbury |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-11-17 |
|
| 475-559
| 4 |
Waterbury |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2017-09-14 |
|
| 475-559
| 5 |
Waterbury |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2015-11-16 |
|
| 475-559
| 6 |
Waterbury |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2017-05-01 |
|
| 475-559
| 7 |
Waterbury |
CT |
HRFRCTCR3MD |
318J COMCAST IP PHONE, LLC |
920 |
|
2015-11-20 |
|
| 475-559
| 8 |
Waterbury |
CT |
HRFRCTASBMD |
6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT |
920 |
|
2016-03-04 |
|
| 475-559
| 9 |
Waterbury |
CT |
BLFDCTAP2MD |
6624 OMNIPOINT COMMUNICATIONS, INC. - CT |
920 |
|
2016-12-27 |
|
| 475-575
| A |
Ridgefield |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
|
|
| 475-575
| 0 |
Ridgefield |
CT |
HRFRCTBC2MD |
073H TELNYX LLC |
920 |
|
2020-10-16 |
|
| 475-575
| 1 |
Ridgefield |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2020-07-12 |
|
| 475-575
| 2 |
Ridgefield |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2020-07-12 |
|
| 475-575
| 3 |
Ridgefield |
CT |
HRFRCT0380Z |
539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT |
920 |
|
2021-05-31 |
|
| 475-575
| 5 |
Ridgefield |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2020-11-16 |
|
| 475-575
| 6 |
Ridgefield |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2021-04-15 |
|
| 475-575
| 7 |
Ridgefield |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2020-11-16 |
|
| 475-575
| 8 |
Ridgefield |
CT |
HRFRCTBCDS1 |
639C ONVOY, LLC - CT |
920 |
|
2021-04-15 |
|
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Last updated: Thu, 05 Feb 2026 23:41:55 UTC
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