The 510 area code is a telephone area code serving much of the East Bay in California. To start a free reverse phone lookup, simply enter the full 10-digit number (including the 510 area code) below and access available caller information such as name, address, and more.
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Area code 510 covers the western portion of the East Bay region of California. It includes cities in Alameda and Contra Costa counties. Specifically, it covers almost everything west of the Berkeley Hills.
Area code 510 is part of an overlay complex with area code 341. Area code 510 was established on September 2, 1991. Area code 341 was introduced on July 22, 2019. Ten-digit dialing is mandatory in this region.
Area code 510 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 510 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 |
|---|---|
| PACIFIC BELL | 268 |
| NEW CINGULAR WIRELESS PCS, LLC | 69 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 55 |
| SPRINT SPECTRUM, L.P. | 53 |
| T-MOBILE USA, INC. | 28 |
| ONVOY, LLC - CA | 24 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 23 |
| LEVEL 3 COMMUNICATIONS, LLC - CA | 21 |
| BANDWIDTH.COM CLEC, LLC - CA | 17 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 17 |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 17 |
| COMCAST IP PHONE, LLC | 10 |
| XO CALIFORNIA, INC. | 10 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 9 |
| METROPCS, INC. | 9 |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 8 |
| USA MOBILITY WIRELESS, INC. | 7 |
| GLOBAL CROSSING LOCAL SERVICES, INC. - CA | 6 |
| PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 5 |
| UTILITY TELECOM GROUP, LLC - CA | 5 |
| O1 COMMUNICATIONS, INC. - CA | 4 |
| AMERICAN MESSAGING SERVICES, LLC | 2 |
| AT&T CORP. | 2 |
| NORTH COUNTY COMMUNICATION CORPORATION - CA | 2 |
| CENTURYLINK COMMUNICATIONS, LLC | 1 |
| GETGO COMMUNICATIONS LLC - CA | 1 |
| INTEGRATED PATH COMMUNICATIONS, LLC - CA | 1 |
| PAETEC COMMUNICATIONS, INC. - CA | 1 |
| Rate Center | Number of Prefixes |
|---|---|
| OKLD MN-PD | 186 |
| HAYWARD | 103 |
| FRNK MAIN | 69 |
| OKLD BKLY | 65 |
| OKLD TRNID | 53 |
| RICHMOND | 42 |
| FRNK OLIVR | 37 |
| OKLD ALMD | 34 |
| OKLD FRTVL | 30 |
| FRNK GRNLF | 21 |
| ELSBR-PINL | 19 |
| HRCUL-RODE | 11 |
| CROCKETT | 5 |
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