Local Calling Guide
Area code/prefix search
Diamond Bar, CA
<< 1 2 3 4 5 6 >>
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 909-616
| 6 |
LSANCAJW5MD |
197D VONAGE AMERICA LLC |
730 |
|
2020-06-23 |
|
| 909-616
| 7 |
LSANCAJW5MD |
197D VONAGE AMERICA LLC |
730 |
|
2020-06-23 |
|
| 909-616
| 8 |
RVSDCAYAGT1 |
6529 T-MOBILE USA, INC. |
730 |
|
2019-01-03 |
|
| 909-616
| 9 |
RVSDCALBCM4 |
6010 NEW CINGULAR WIRELESS PCS, LLC |
730 |
|
2018-11-09 |
|
| 909-655
| A |
LSANCA039MD |
981E BANDWIDTH.COM CLEC, LLC - CA |
730 |
|
|
|
| 909-655
| 0 |
LSANCA039MD |
981E BANDWIDTH.COM CLEC, LLC - CA |
730 |
|
2015-08-21 |
|
| 909-655
| 1 |
LSANCA039MD |
981E BANDWIDTH.COM CLEC, LLC - CA |
730 |
|
2015-08-21 |
|
| 909-655
| 2 |
IRVNCASM1MD |
671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
730 |
|
2015-09-28 |
|
| 909-655
| 3 |
IRVECAEIDS2 |
7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA |
730 |
|
2015-11-03 |
|
| 909-655
| 4 |
COVNCAXFX3Y |
649C ONVOY, LLC - CA |
730 |
|
2016-03-14 |
|
| 909-655
| 5 |
COVNCAXFX3Y |
649C ONVOY, LLC - CA |
730 |
|
2016-03-14 |
|
| 909-655
| 6 |
COVNCAXF7MD |
793K TWC IP ENABLED SERVICES, LLC |
730 |
|
2016-04-02 |
|
| 909-655
| 7 |
RVSDCALBCM4 |
6010 NEW CINGULAR WIRELESS PCS, LLC |
730 |
|
2015-12-15 |
|
| 909-655
| 8 |
RVSDCALBCM4 |
6010 NEW CINGULAR WIRELESS PCS, LLC |
730 |
|
2015-10-13 |
|
| 909-655
| 9 |
|
515J IP HORIZON LLC |
730 |
|
2015-09-25 |
|
| 909-718
| A |
IRVNCASM1MD |
671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
730 |
|
|
|
| 909-718
| 0 |
|
649C ONVOY, LLC - CA |
730 |
|
2026-08-24 |
|
| 909-718
| 1 |
IRVNCASM1MD |
671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
730 |
|
|
|
| 909-718
| 2 |
LSANCA039MD |
981E BANDWIDTH.COM CLEC, LLC - CA |
730 |
|
2011-06-03 |
|
| 909-718
| 3 |
|
145J TERRA NOVA TELECOM INC. |
730 |
|
2025-10-04 |
|
| 909-718
| 4 |
COVNCAXFX3Y |
649C ONVOY, LLC - CA |
730 |
|
2008-07-14 |
|
| 909-718
| 5 |
ANHMCA01DS3 |
7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA |
730 |
|
2007-03-16 |
|
| 909-718
| 6 |
IRVNCASM1MD |
671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
730 |
|
|
|
| 909-718
| 7 |
IRVNCASM1MD |
671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
730 |
|
2007-03-13 |
|
| 909-718
| 8 |
IRVNCASM1MD |
671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
730 |
|
2007-03-13 |
|
| 909-718
| 9 |
RVSDCALBCM4 |
6010 NEW CINGULAR WIRELESS PCS, LLC |
730 |
|
2009-04-17 |
|
| 909-760
| A |
COVNCAXFX3Y |
649C ONVOY, LLC - CA |
730 |
|
2024-01-23 |
|
| 909-760
| 0 |
COVNCAXFX3Y |
649C ONVOY, LLC - CA |
730 |
|
2017-06-11 |
|
| 909-760
| 1 |
LSANCAJW6MD |
073H TELNYX LLC |
730 |
|
2017-06-02 |
|
| 909-760
| 2 |
COVNCAXFX3Y |
649C ONVOY, LLC - CA |
730 |
|
2016-11-09 |
|
| 909-760
| 3 |
COVNCAXFX3Y |
649C ONVOY, LLC - CA |
730 |
|
2016-11-09 |
|
| 909-760
| 4 |
COVNCAXFX3Y |
649C ONVOY, LLC - CA |
730 |
|
2016-11-09 |
|
| 909-760
| 5 |
COVNCAXFX3Y |
649C ONVOY, LLC - CA |
730 |
|
2016-11-09 |
|
| 909-760
| 6 |
COVNCAXFX3Y |
649C ONVOY, LLC - CA |
730 |
|
2016-11-09 |
|
| 909-760
| 7 |
RVSDCALBCM4 |
6010 NEW CINGULAR WIRELESS PCS, LLC |
730 |
|
2017-11-20 |
|
| 909-760
| 8 |
RVSDCAYAGT1 |
6529 T-MOBILE USA, INC. |
730 |
|
2018-02-11 |
|
| 909-760
| 9 |
RVSDCAYAGT1 |
6529 T-MOBILE USA, INC. |
730 |
|
2016-12-08 |
|
| 909-839
| A |
WLNTCAXFDS0 |
2319 FRONTIER CALIFORNIA INC. |
730 |
|
|
|
| 909-839
| 0 |
WLNTCAXFDS0 |
2319 FRONTIER CALIFORNIA INC. |
730 |
|
|
|
| 909-839
| 1 |
WLNTCAXFDS0 |
2319 FRONTIER CALIFORNIA INC. |
730 |
|
|
|
| 909-839
| 2 |
WLNTCAXFDS0 |
2319 FRONTIER CALIFORNIA INC. |
730 |
|
|
|
| 909-839
| 3 |
RVSDCALBCM4 |
6010 NEW CINGULAR WIRELESS PCS, LLC |
730 |
|
2007-12-08 |
|
| 909-839
| 4 |
BLTNCAADPS2 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
730 |
|
2005-07-23 |
|
| 909-839
| 5 |
BLTNCAADPS2 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
730 |
|
2005-07-23 |
|
| 909-839
| 6 |
BLTNCAADPS2 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
730 |
|
2005-07-23 |
|
| 909-839
| 7 |
WLNTCAXFDS0 |
2319 FRONTIER CALIFORNIA INC. |
730 |
|
|
|
| 909-839
| 8 |
WLNTCAXFDS0 |
2319 FRONTIER CALIFORNIA INC. |
730 |
|
|
|
| 909-839
| 9 |
LSANCAJW2MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
730 |
|
2015-07-02 |
|
| 909-859
| A |
RILTCA11DS0 |
7480 PACIFIC BELL (COMPETITIVE) |
730 |
|
|
|
| 909-859
| 0 |
LSANCA039MD |
981E BANDWIDTH.COM CLEC, LLC - CA |
730 |
|
2011-06-03 |
|
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Last updated: Tue, 01 Sep 2026 00:40:05 UTC
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