Area code 510 was first put in service September 02, 1991. Area code 510 is in USA (California). 1-800-database has 1940 records on file with a phone number in the area code of (510) and 187 comments.

The carriers providing phone numbers in 510 area code are: 33 Wireless Inc., Allegiance Telecom, American Messaging (am), American Messaging Services, Clec, Broadwing Communications, Brooks Fiber Communications Of California, Cellco Partnership DBA Verizon Wireless, Centurylink Communications LLC, Cf Communications DBA Telekenex, Comcast Phone Of California, Global Crossing Local Services-ca, Level 3 Communications, Mcimetro Access Transmission Services LLC, Mci Worldcom Communications, Ca, Metro PCS, Mpower Communications Corp, Mpower Networks Services Inc., New Cingular Wireless PCS, North County Communications Corp., O1 Communications, Pacific Bell, Pac - West Telecomm, Paetec Communications, Peerless Network Of California, Sbc Internet Services, Sprint Spectrum L.p., Teleport Communications Group - San Francisco, The Telephone Connection Local Services, T-mobile Usa, Tw Telecom Of California Lp, Usa Mobility Wireless, U.s. Telepacific Corp., Utility Telephone, Xo California.

Counties located in area code 510 are: ALAMEDA, CONTRA COSTA, LASSEN.

State: California

Largest city: Oakland

In service since: 09/02/1991

Timezone: Pacific

Major Cities in 510
Oakland, CA (390,724)
Fremont, CA (214,089)
Hayward, CA (144,186)
Berkeley, CA (112,580)
Richmond, CA (103,701)
San Leandro, CA (84,950)
Alameda, CA (73,812)
Union City, CA (69,516)
Newark, CA (42,573)
San Pablo, CA (29,139)
Zip Codes in 510
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