Local Calling Guide
Area code/prefix search
Diamond Bar, CA
<< 1 2 3
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 909-859
| 7 |
RILTCA11DS0 |
7480 PACIFIC BELL (COMPETITIVE) |
730 |
|
2004-10-21 |
|
| 909-859
| 8 |
RILTCA11DS0 |
7480 PACIFIC BELL (COMPETITIVE) |
730 |
|
|
|
| 909-859
| 9 |
RVSDCALBCM4 |
6010 NEW CINGULAR WIRELESS PCS, LLC |
730 |
|
2007-03-29 |
|
| 909-860
| A |
DMBRCAXF86M |
2319 FRONTIER CALIFORNIA INC. |
730 |
|
|
|
| 909-861
| A |
DMBRCAXF86M |
2319 FRONTIER CALIFORNIA INC. |
730 |
|
|
|
| 909-869
| A |
WLNTCAXFDS0 |
2319 FRONTIER CALIFORNIA INC. |
730 |
|
|
|
| 909-895
| A |
LSANCA54DS7 |
8826 LEVEL 3 COMMUNICATIONS, LLC - CA |
730 |
|
|
|
| 909-895
| 0 |
LSANCA54DS7 |
8826 LEVEL 3 COMMUNICATIONS, LLC - CA |
730 |
|
2005-01-30 |
|
| 909-895
| 1 |
|
515J IP HORIZON LLC |
730 |
|
2004-11-13 |
|
| 909-895
| 2 |
|
515J IP HORIZON LLC |
730 |
|
2004-11-13 |
|
| 909-895
| 3 |
LSANCA54DS7 |
8826 LEVEL 3 COMMUNICATIONS, LLC - CA |
730 |
|
2005-09-02 |
|
| 909-895
| 4 |
LSANCA54DS7 |
8826 LEVEL 3 COMMUNICATIONS, LLC - CA |
730 |
|
|
|
| 909-895
| 5 |
LSANCA039MD |
981E BANDWIDTH.COM CLEC, LLC - CA |
730 |
|
2022-08-08 |
|
| 909-895
| 6 |
LSANCA54DS7 |
8826 LEVEL 3 COMMUNICATIONS, LLC - CA |
730 |
|
2006-05-29 |
|
| 909-895
| 7 |
COVNCAXFXUX |
576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB |
730 |
|
2006-11-22 |
|
| 909-895
| 8 |
IRVNCASM1MD |
671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
730 |
|
2006-09-01 |
|
| 909-895
| 9 |
RVSDCALBCM4 |
6010 NEW CINGULAR WIRELESS PCS, LLC |
730 |
|
2006-07-05 |
|
| 909-914
| A |
LSANCA039MD |
981E BANDWIDTH.COM CLEC, LLC - CA |
730 |
|
|
|
| 909-914
| 0 |
LSANCA039MD |
981E BANDWIDTH.COM CLEC, LLC - CA |
730 |
|
2020-12-19 |
|
| 909-914
| 1 |
LSANCA039MD |
981E BANDWIDTH.COM CLEC, LLC - CA |
730 |
|
2021-03-20 |
|
| 909-914
| 2 |
COVNCAXFX3Y |
649C ONVOY, LLC - CA |
730 |
|
2021-07-30 |
|
| 909-914
| 3 |
COVNCAXFX3Y |
649C ONVOY, LLC - CA |
730 |
|
2021-07-30 |
|
| 909-914
| 4 |
COVNCAXFX3Y |
649C ONVOY, LLC - CA |
730 |
|
2021-07-30 |
|
| 909-914
| 5 |
COVNCAXFX3Y |
649C ONVOY, LLC - CA |
730 |
|
2021-07-30 |
|
| 909-914
| 6 |
GRDNCA02KMD |
7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA |
730 |
|
2021-08-23 |
|
| 909-914
| 7 |
LSANCA03IMD |
553J WHITESKY COMMUNICATIONS, LLC |
730 |
|
2021-10-01 |
|
| 909-914
| 8 |
RVSDCAYAGT1 |
6529 T-MOBILE USA, INC. |
730 |
|
2021-03-22 |
|
| 909-914
| 9 |
RVSDCAYAGT1 |
6529 T-MOBILE USA, INC. |
730 |
|
2021-03-22 |
|
| 909-978
| A |
IRVNCASM1MD |
671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS |
730 |
|
|
|
| 909-978
| 0 |
|
624H ONVOY SPECTRUM, LLC |
730 |
|
2025-05-16 |
|
| 909-978
| 1 |
|
624H ONVOY SPECTRUM, LLC |
730 |
|
2025-05-16 |
|
| 909-978
| 2 |
COVNCAXFX3Y |
649C ONVOY, LLC - CA |
730 |
|
2012-04-02 |
|
| 909-978
| 3 |
ANHMCA01DS3 |
7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA |
730 |
|
2003-10-20 |
|
| 909-978
| 4 |
COVNCAXFX3Y |
649C ONVOY, LLC - CA |
730 |
|
2007-02-11 |
|
| 909-978
| 5 |
NRWLCA141MD |
776C CHARTER FIBERLINK CA-CCO, LLC - CA |
730 |
|
2012-07-16 |
|
| 909-978
| 6 |
IRVECAEIDS2 |
7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA |
730 |
|
2005-11-15 |
|
| 909-978
| 7 |
LSANCA039MD |
981E BANDWIDTH.COM CLEC, LLC - CA |
730 |
|
2012-03-16 |
|
| 909-978
| 8 |
|
624H ONVOY SPECTRUM, LLC |
730 |
|
2025-05-16 |
|
| 909-978
| 9 |
LSANCA039MD |
981E BANDWIDTH.COM CLEC, LLC - CA |
730 |
|
2010-10-30 |
|
| 909-979
| A |
WLNTCAXFDS0 |
2319 FRONTIER CALIFORNIA INC. |
730 |
|
|
|
| 909-979
| 0 |
RVSDCAYAGT1 |
6529 T-MOBILE USA, INC. |
730 |
|
2007-09-03 |
|
| 909-979
| 1 |
LSANCA039MD |
981E BANDWIDTH.COM CLEC, LLC - CA |
730 |
|
2008-11-23 |
|
| 909-979
| 2 |
LSANCA54DS7 |
8826 LEVEL 3 COMMUNICATIONS, LLC - CA |
730 |
|
2005-09-18 |
|
| 909-979
| 3 |
LSANCA039MD |
981E BANDWIDTH.COM CLEC, LLC - CA |
730 |
|
2010-12-10 |
|
| 909-979
| 4 |
RVSDCAYAGT1 |
6529 T-MOBILE USA, INC. |
730 |
|
2004-03-17 |
|
| 909-979
| 5 |
LSANCA54DS7 |
8826 LEVEL 3 COMMUNICATIONS, LLC - CA |
730 |
|
|
|
| 909-979
| 6 |
LSANCA54DS7 |
8826 LEVEL 3 COMMUNICATIONS, LLC - CA |
730 |
|
|
|
| 909-979
| 7 |
RVSDCALBCM4 |
6010 NEW CINGULAR WIRELESS PCS, LLC |
730 |
|
2006-10-17 |
|
| 909-979
| 8 |
LSANCA54DS7 |
8826 LEVEL 3 COMMUNICATIONS, LLC - CA |
730 |
|
2006-03-03 |
|
| 909-979
| 9 |
LSANCA039MD |
981E BANDWIDTH.COM CLEC, LLC - CA |
730 |
|
2010-07-04 |
|
<< 1 2 3
Last updated: Thu, 16 Oct 2025 03:04:18 UTC
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