Look up any phone number starting with 408 to identify the owner name, address, spam reports, and more. The 408 area code is serving most of Santa Clara County and Northern Santa Cruz County, California.
Enter a full 10-digit number to identify the caller and whether it has been reported as spam.
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Area code 408 covers most of Santa Clara County and Northern Santa Cruz County in California.
Area code 408 is overlaid by area code 669 . Area code 408 was created in 1959 from area code 415 . Area code 669 was introduced in 2012. Ten-digit dialing is required for all calls in this region, and also requires the prefix digit *1* (1+10-digit dialing).
Area code 408 is a general purpose code which was placed in service on January 1, 1959.
Our California phone number lookup for the 408 area code analyzes the three-digit prefix to identify the initially assigned telecommunications company and rate center. This prefix code data may help to determine the U.S. carrier, California geographic region, and local calling area associated with the phone number.
Phone numbers follow the following structure under the North American Numbering Plan:
Understanding the area code can help you determine if a call is local to your area. However, keep in mind that due to mobile number portability and VoIP services, the caller may be anywhere in the United States, so it’s best to search for the most recent phone number details.
| Company | Number of Prefixes |
|---|---|
| PACIFIC BELL | 300 |
| NEW CINGULAR WIRELESS PCS, LLC | 65 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 54 |
| SPRINT SPECTRUM, L.P. | 37 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 23 |
| LEVEL 3 COMMUNICATIONS, LLC - CA | 22 |
| ONVOY, LLC - CA | 19 |
| T-MOBILE USA, INC. | 18 |
| FRONTIER CALIFORNIA INC. | 17 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 16 |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 16 |
| XO CALIFORNIA, INC. | 14 |
| BANDWIDTH.COM CLEC, LLC - CA | 13 |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 9 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 8 |
| COMCAST IP PHONE, LLC | 7 |
| GLOBAL CROSSING LOCAL SERVICES, INC. - CA | 6 |
| METROPCS, INC. | 5 |
| AT&T - LOCAL | 4 |
| USA MOBILITY WIRELESS, INC. | 4 |
| O1 COMMUNICATIONS, INC. - CA | 3 |
| PACIFIC BELL (COMPETITIVE) | 3 |
| PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 3 |
| 33 WIRELESS INC. | 2 |
| AMERICAN MESSAGING SERVICES, LLC | 2 |
| YMAX COMMUNICATIONS CORP. - CA | 2 |
| AT&T CORP. | 1 |
| CHARTER FIBERLINK CA-CCO, LLC - CA | 1 |
| GETGO COMMUNICATIONS LLC - CA | 1 |
| GLOBAL VALLEY NETWORKS | 1 |
| INTRADO COMMUNICATIONS, LLC | 1 |
| NORTH COUNTY COMMUNICATION CORPORATION - CA | 1 |
Carrier names have been updated from their original FCC assignments to reflect current companies following mergers, acquisitions, and rebranding. Updates were determined using AI-assisted research and may not be accurate or reflect up to date changes. This data is provided without warranties of accuracy or completeness.
| Rate Center | Number of Prefixes |
|---|---|
| SNJS WEST | 267 |
| SNJS NORTH | 130 |
| SUNNYVALE | 90 |
| SNJS SOUTH | 75 |
| CAMPBELL | 43 |
| LOS GATOS | 22 |
| MORGANHILL | 16 |
| GILROY | 11 |
| SAN MARTIN | 10 |
| SARATOGA | 10 |
| SALINAS | 2 |
| HOLLISTER | 1 |
| SANANTONIO | 1 |
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