District of California area codes: 510 | |
---|---|
Country | United States |
State/Province | California |
Major City | San Jose |
Time Zone | Pacific (UTC-08:00) |
Prefix | County | Primary City | Company |
---|---|---|---|
510-948 | Contra Costa | Hercules, CA | Xo California |
510-952 | Alameda | Union City, CA | Sprint Spectrum L.p. |
510-957 | San Francisco | San Francisco, CA | Allegiance Telecom |
510-962 | Alameda | Hayward, CA | Level 3 Communications |
510-964 | Contra Costa | El Sobrante, CA | Pacific Bell |
510-965 | Contra Costa | Richmond, CA | Pacific Bell |
510-966 | Alameda | Union City, CA | American Messaging Services |
510-967 | San Francisco | San Francisco, CA | Sprint Spectrum L.p. |
510-968 | Alameda | Fremont, CA | American Messaging (am) |
510-969 | Alameda | Oakland, CA | Tw Telecom Of California Lp |
510-970 | Contra Costa | Richmond, CA | Pacific Bell |
510-972 | Alameda | Union City, CA | Comcast Phone Of California |
510-976 | North County Communications Corp. | ||
510-978 | Alameda | Oakland, CA | Level 3 Communications |
510-979 | Alameda | Fremont, CA | Pacific Bell |
510-981 | Alameda | Berkeley, CA | Pacific Bell |
510-982 | San Francisco | San Francisco, CA | Mci Worldcom Communications, Ca |
510-984 | Alameda | Oakland, CA | Level 3 Communications |
510-985 | Alameda | Oakland, CA | Pacific Bell |
510-986 | Alameda | Oakland, CA | Pacific Bell |
There are 689 prefixes, In the code area, the major cities are Alameda, CA;Berkeley, CA;Castro Valley, CA;El Cerr. The major city is San Jose.