The 657 area code is a telephone area code serving the southern part of California. To start a free reverse phone lookup, simply enter the full 10-digit number (including the 657 area code) below and access available caller information such as name, address, and more.
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Phone numbers with the 657 area code originate from northern and western Orange County, a portion of Los Angeles County, and specific areas within San Bernardino County. While primarily serving these regions, some areas, such as portions of La Habra, and all of Seal Beach, Los Alamitos, the far northwestern portion of Brea, and the western portions of La Palma, are served by other area codes like 562. Additionally, cities like Costa Mesa, Irvine, Santa Ana, Tustin, and Newport Beach straddle the 657/714 and 949 area codes.
Area code 657 was introduced as an overlay onto the existing 714 area code territory. Area code 714 was originally assigned in 1951. Due to the increasing demand for telephone numbers, area code 657 was overlaid onto the 714 territory on September 23, 2008. This means that area codes 657 and 714 now serve the same geographic region.
Area code 657 is a General Purpose Code which was placed in service on January 1, 1947.
Our reverse phone lookup will analyze the three-digit prefix of any 657 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.
| Company | Number of Prefixes |
|---|---|
| BANDWIDTH.COM CLEC, LLC - CA | 10 |
| LEVEL 3 COMMUNICATIONS, LLC - CA | 7 |
| T-MOBILE USA, INC. | 7 |
| ONVOY, LLC - CA | 6 |
| TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB | 6 |
| METROPCS NETWORKS, LLC | 3 |
| AT&T CORP. | 2 |
| NEW CINGULAR WIRELESS PCS, LLC | 2 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 1 |
| COMCAST IP PHONE, LLC | 1 |
| PACIFIC BELL | 1 |
| PAETEC COMMUNICATIONS, INC. - CA | 1 |
| PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 1 |
| SPRINT SPECTRUM, L.P. | 1 |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 1 |
| Rate Center | Number of Prefixes |
|---|---|
| SANTA ANA | 13 |
| ANAHEIM | 9 |
| ORANGE | 6 |
| HUNTITNBCH | 5 |
| GARDEN GRV | 4 |
| WESTMINSTR | 4 |
| PLACENTIA | 3 |
| CYPRESS | 2 |
| FULLERTON | 2 |
| BUENA PARK | 1 |
| YORBALINDA | 1 |
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