Area code · CA
408 area code
The 408 area code serves San Jose, California. Look up a specific 408 number, check spam reports, and stop spam calls automatically.
schedule2 min readUpdated May 15, 2026By the Halo team
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Location
San Jose, CA
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Timezone
Pacific
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State
California
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Major cities
San Jose, Sunnyvale, Santa Clara
ABOUTAbout the 408 area code
The 408 area code is assigned to San Jose, California. Phone numbers with this area code are used by residents and businesses in the San Jose metropolitan area and surrounding communities.
If you've received an unwanted call from a 408 area code number, use the Halo phone lookup tool to check if it has been reported as spam. Halo AI blocks 99% of spam calls at the network level, protecting you from robocalls, scams, and telemarketers before they ever reach your phone.
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