Area Code 661 Reverse Phone Lookup

The 661 area code is a telephone area code serving the southern part of the San Joaquin Valley and the far northern part of the Los Angeles metropolitan area, in the U.S. state of California. To start a free reverse phone lookup, simply enter the full 10-digit number (including the 661 area code) below and access available caller information such as name, address, and more.

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CaliforniaCalifornia Reverse Lookup ➜

Area Code 661 Location: California

The numbering plan area includes most of Kern County, most of northern Los Angeles County (specifically the Santa Clarita Valley, the Antelope Valley and the surrounding mountains), and small parts of Ventura County, Santa Barbara County, and Tulare County.

Counties Served by Area Code 661:

  • Kern County
  • Los Angeles County
  • Santa Barbara County
  • Tulare County
  • Ventura County

Major Cities in the 661 Service Area:

Other Cities and Towns:

  • Acton
  • Agua Dulce
  • Allensworth
  • Antelope Acres
  • Arvin
  • Bear Valley Springs
  • Buttonwillow
  • Caliente
  • Castaic
  • Cuyama
  • Del Sur
  • Delano
  • Desert View Highlands
  • Earlimart
  • Edwards Air Force Base
  • Famoso
  • Fellows
  • Frazier Park
  • Golden Hills
  • Gorman
  • Grapevine
  • Green Valley
  • Havilah
  • Juniper Hills
  • Keene
  • Lake Hughes
  • Lake Los Angeles
  • Lake of the Woods
  • Lamont
  • Lebec
  • Leona Valley
  • Littlerock
  • Llano
  • Lost Hills
  • Maricopa
  • McFarland
  • McKittrick
  • Mettler
  • Mojave
  • Neenach
  • New Cuyama
  • North Edwards
  • Oildale
  • Pearblossom
  • Pine Mountain Club
  • Posey
  • Quartz Hill
  • Rosamond
  • Rosedale
  • Shafter
  • South Taft
  • Stallion Springs
  • Stevenson Ranch
  • Taft
  • Taft Heights
  • Tehachapi
  • Tupman
  • Val Verde
  • Valencia
  • Valley Acres
  • Valyermo
  • Walker Basin
  • Wasco
  • Weedpatch
  • Wheeler Ridge

Area Code 661 Location Map

Area Code 661 Location on California Map

Area code 661 is a General Purpose Code which was placed in service on January 1, 1947.

661 Area Code Prefixes

Our reverse phone lookup will analyze the three-digit prefix of any 661 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, California geographic region, and local calling area associated with the phone number.

Prefixes by Company

Company Number of Prefixes
PACIFIC BELL 138
NEW CINGULAR WIRELESS PCS, LLC 44
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 28
FRONTIER CALIFORNIA INC. 27
SPRINT SPECTRUM, L.P. 23
LEVEL 3 COMMUNICATIONS, LLC - CA 18
T-MOBILE USA, INC. 14
ONVOY, LLC - CA 12
O1 COMMUNICATIONS, INC. - CA 11
LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 9
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 9
AT&T - LOCAL 7
BANDWIDTH.COM CLEC, LLC - CA 7
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7
TELEPORT COMMUNICATIONS AMERICA, LLC - CA 6
PAETEC COMMUNICATIONS, INC. - CA 4
AT&T CORP. 3
BRIGHT HOUSE NTWS INFORMATION SVCS (CALIFORNIA) CA 3
METROPCS NETWORKS, LLC 3
METROPCS, INC. 3
33 WIRELESS INC. 1
CENTURYLINK COMMUNICATIONS, LLC 1
INTRADO COMMUNICATIONS, LLC 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 1
NUSO, LLC 1
PACIFIC BELL (COMPETITIVE) 1
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 1
RADIANTIQ LLC 1
TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 1
UTILITY TELECOM GROUP, LLC - CA 1
XO CALIFORNIA, INC. 1
YMAX COMMUNICATIONS CORP. - CA 1

Prefixes by Rate Center

Rate Center Number of Prefixes
BKFD MAIN 106
PLDL PLDL 55
SNCA NHCS 52
LANCASTER 34
BKFD SOUTH 32
SNCA SGCC 20
BKFD NORTH 19
DELANO 8
TAFT 7
ARVIN 6
EDWARDS 6
TEHACHAPI 6
LEBEC 5
MOJAVE 4
SHAFTER 4
MCFARLAND 3
PLDL AGDL 3
WASCO 3
HI VISTA 2
LAKEHUGHES 2
LOST HILLS 2
BUTTONWLLW 1
CLFRNHTSPG 1
CUYAMA 1
EARLIMART 1
GLENNVILLE 1
MCKITTRICK 1
PLDL LNVY 1
ROSAMOND 1
WALKERBSIN 1

Other California Area Codes

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