Area Code Info

628 Area Code

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California Area Codes Map

Area Code Information

Area Code: 628
State: California
Primary City: San Francisco
Timezone: Pacific
State Code:

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Area code 628 was first put in service March 21, 2015. Currently, the largest city it serves is San Francisco, CA, and it overlaps coverage areas with area code 415

Heavily Reported Numbers

Active Phone Number Prefixes

Prefix Usage Primary City Carrier Introduced
No prefix data available.