657 Prefixes/Exchanges

The three digits following the area code of a phone number are known as the prefix or exchange. The remaining numbers (last 4 digits of phone number) all refer to that prefix/exhange.

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Prefixes

location/Company

657-200WESTMINSTR, CA
METROPCS NETWORKS, LLC
Date Assigned: 2008-08-08
657-201ANAHEIM, CA
METROPCS NETWORKS, LLC
Date Assigned: 2008-09-19
657-202ANAHEIM, CA
PEERLESS NETWORK OF CALIFORNIA, LLC - CA
Date Assigned: 2009-02-11
657-203HUNTITNBCH, CA
LEVEL 3 COMMUNICATIONS, LLC - CA
Date Assigned: 2010-04-14
657-204HUNTITNBCH, CA
BANDWIDTH.COM CLEC, LLC - CA
Date Assigned: 2010-04-14
657-205SANTA ANA, CA
MCI WORLDCOM COMMUNICATIONS, INC., CA
Date Assigned: 2010-05-06
657-206GARDEN GRV, CA
T-MOBILE USA, INC.
Date Assigned: 2010-05-18
657-207ANAHEIM, CA
METROPCS NETWORKS, LLC
Date Assigned: 2010-05-27
657-208ANAHEIM, CA
INFOTELECOM, LLC - CA
Date Assigned: 2010-09-09
657-209

657-210SANTA ANA, CA
BANDWIDTH.COM CLEC, LLC - CA
Date Assigned: 2010-11-11
657-211

657-212SANTA ANA, CA
LEVEL 3 COMMUNICATIONS, LLC - CA
Date Assigned: 2010-11-22
657-213

657-214CYPRESS, CA
BANDWIDTH.COM CLEC, LLC - CA
Date Assigned: 2010-11-11
657-215HUNTITNBCH, CA
LEVEL 3 COMMUNICATIONS, LLC - CA
Date Assigned: 2010-11-23
657-216PLACENTIA, CA
BANDWIDTH.COM CLEC, LLC - CA
Date Assigned: 2011-04-04
657-217FULLERTON, CA
BANDWIDTH.COM CLEC, LLC - CA
Date Assigned: 2011-07-18
657-222CYPRESS, CA
CF COMMUNICATIONS, LLC DBA TELEKENEX - CA
Date Assigned: 2010-09-13
657-224ORANGE, CA
LEVEL 3 COMMUNICATIONS, LLC - CA
Date Assigned: 2011-12-05
657-229SANTA ANA, CA
BANDWIDTH.COM CLEC, LLC - CA
Date Assigned: 2010-02-23
657-235SANTA ANA, CA
BANDWIDTH.COM CLEC, LLC - CA
Date Assigned: 2011-07-22
657-269SANTA ANA, CA
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Date Assigned: 2010-03-05
657-278FULLERTON, CA
PACIFIC BELL
Date Assigned: 2008-11-21
657-300HUNTITNBCH, CA
CF COMMUNICATIONS, LLC DBA TELEKENEX - CA
Date Assigned: 2012-03-30
657-310

657-311

657-323

657-333ORANGE, CA
TELCENTRIS COMMUNICATIONS, LLC - CA
Date Assigned: 2010-08-16
657-400WESTMINSTR, CA
CF COMMUNICATIONS, LLC DBA TELEKENEX - CA
Date Assigned: 2012-03-30
657-408

657-411

657-415

657-424

657-442

657-444PLACENTIA, CA
TELCENTRIS COMMUNICATIONS, LLC - CA
Date Assigned: 2010-08-20
657-464HUNTITNBCH, CA
BANDWIDTH.COM CLEC, LLC - CA
657-510

657-511

657-530

657-549ANAHEIM, CA
BANDWIDTH.COM CLEC, LLC - CA
Date Assigned: 2010-02-23
657-555
MULTIPLE OCN LISTING
657-559

657-562

657-600SANTA ANA, CA
CF COMMUNICATIONS, LLC DBA TELEKENEX - CA
Date Assigned: 2012-03-12
657-611

657-619

657-622SANTA ANA, CA
PACIFIC BELL
Date Assigned: 2009-05-18
657-626

657-628

657-650

657-657

657-661

657-666WESTMINSTR, CA
CF COMMUNICATIONS, LLC DBA TELEKENEX - CA
Date Assigned: 2010-09-13
657-700

657-707

657-711

657-714

657-747

657-760

657-777CYPRESS, CA
TELCENTRIS COMMUNICATIONS, LLC - CA
Date Assigned: 2010-08-13
657-800GARDEN GRV, CA
CF COMMUNICATIONS, LLC DBA TELEKENEX - CA
Date Assigned: 2012-03-12
657-805

657-811

657-818

657-831

657-858

657-859SANTA ANA, CA
COX CALIFORNIA TELCOM, INC. - CA
Date Assigned: 2008-06-12
657-888ORANGE, CA
TELCENTRIS COMMUNICATIONS, LLC - CA
Date Assigned: 2010-08-16
657-909

657-911

657-916

657-925

657-949

657-950

657-951

657-958

657-959

657-976
VERIZON CALIFORNIA INC.-CA (GTE)
657-999ANAHEIM, CA
TELCENTRIS COMMUNICATIONS, LLC - CA
Date Assigned: 2010-07-20
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