Browse the Sunnyvale phone book to find residents and businesses throughout Santa Clara County. If you received a call from an unrecognized number with area code 408 or 669, use our lookup tool to see who it belongs to before you call back.
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Find phone numbers for city businesses, public services, and organizations by category.
Got a phone call or message from a Sunnyvale phone number you don't recognize? Before you answer, call back, or reply, use our phone number lookup service to find out who called you.
California phone numbers use area codes 408, and 669. Select a code below to look up numbers starting with it.
According to the National Do Not Call Registry, California residents filed 287,916 complaints about unwanted calls in 2024:
Phone numbers reported to the FTC as unwanted calls by Sunnyvale residents in the last 30 days.
+1 (470) 766-4802
Reducing your debt (credit cards, mortgage, student loans)
2 reports ·
+1 (833) 213-6206
Reducing your debt (credit cards, mortgage, student loans)
2 reports ·
+1 (908) 223-3147
Reducing your debt (credit cards, mortgage, student loans)
2 reports ·
+1 (408) 675-3806
Dropped call or no message
1 report ·
+1 (540) 322-0127
Reducing your debt (credit cards, mortgage, student loans)
1 report ·
+1 (412) 517-7365
Other
1 report ·
+1 (978) 910-4781
Reducing your debt (credit cards, mortgage, student loans)
1 report ·
+1 (586) 500-1163
Reducing your debt (credit cards, mortgage, student loans)
1 report ·
+1 (740) 598-7215
Reducing your debt (credit cards, mortgage, student loans)
1 report ·
+1 (270) 868-4939
Reducing your debt (credit cards, mortgage, student loans)
1 report ·
Received a call from a business but aren't sure it's really them? Santa Clara County, according to U.S. Census Bureau data, includes 41,579 firms and 48,879 establishments employing 1,133,633 people.
| County | Percent of City | Firms | Establishments |
|---|---|---|---|
| Santa Clara | 100.00% | 41579 | 48879 |
Use our reverse lookup service to verify whether a number belongs to a legitimate local business, not scammers spoofing local numbers to gain your trust.
If you receive fraudulent calls or suspect a scam attempt, report it to reportfraud.ftc.gov or local police department using the following contacts:
Sunnyvale has a population of 155805 people (median age of 35.10) - thousands of potential callers you might not recognize: neighbors, an old contact, or someone you actually want to talk to. Use our local white pages to find residents' phone numbers and addresses sourced from Santa Clara County, California state, and other public records.