Put Robocallers Out of Business

YouMail blocks robocalls and notifies the authorities.

150,000+ ratings

March 2021 San Francisco Bay Area, CA Robocall Data

Calls Placed
75.6 Million
(0.4% MoM)
Per Day
Per Hour
Per Second
Avg. Calls Per Person

See historical robocalls by

Top 20 Robocallers to San Francisco Bay Area, CA in March 2021

Robocaller Place of Origin Carrier Caller ID Caller Type
1. 510-320-9378 Fremont, CA T-Mobile sharlet DamicoCathey Generic Robocaller
2. 562-401-5940 Downey, CA Frontier Kaiser Permanente Service Alert
3. 888-934-6489 Toll Free Toll Free Comcast Customer Call
4. 713-568-6986 Houston, TX Level 3 Communications Global Tel Link Timeshare Scam
5. 925-248-9529 San Ramon, CA Bandwidth.com CLEC, LLC Global Tel Link Prison Call Consent
6. 877-647-8552 Toll Free Toll Free Wells Fargo Bank/Credit Card Payment Reminder
7. 707-980-2647 Vallejo, CA T-Mobile REGINA LEDESMA Unknown Robocaller
8. 424-207-1474 Los Angeles, CA Unknown Generic Robocaller Unknown Robocaller
9. 800-528-4800 Toll Free Toll Free American Express Credit Card Debt Collector
10. 877-358-4998 Toll Free Toll Free PREMIER Bankcard Financial Customer Call
11. 855-807-9606 Toll Free Toll Free loanDepot Transaction Fee Scam
12. 800-743-5000 Toll Free Toll Free Medical Customer Call Service Payment Reminder
13. 510-502-0533 Oakland, CA T-Mobile Conscious Mindz Unknown Robocaller
14. 800-691-8755 Toll Free Toll Free Mortgage Loan Spam Call Alert
15. 866-930-3305 Toll Free Toll Free Medical Customer Call Health Insurance Spam
16. 925-690-5270 Clayton, CA Bandwidth.com CLEC, LLC Prison Prepaid Call Prison Call Consent
17. 619-378-1286 Campo, CA Bandwidth.com CLEC, LLC Scam Likely Unknown Robocaller
18. 925-820-3044 Danville, CA Inteliquent SmartFind Express Substitute Teacher Alert
19. 800-694-2399 Toll Free Toll Free Quicken Loans Financial Customer Call
20. 800-575-5076 Toll Free Toll Free Generic Robocaller Debt Collector

Robocalls by Category

YouMail's Top 100 Robocallers

See which numbers are the highest volume robocallers!

How does the YouMail Robocall Index™ Work?

The YouMail Robocall Index™ estimates monthly robocall volume in the US, as well as in various regions, and highlights the worst offenders. The index works by extrapolating the data collected from the many tens of millions of calls made each month to YouMail users.

Working on a robocall story? We can help!

We're the robocall experts. We have an unbelievable amount of data and insight and we just love talking about how to stop robocalls. If you're working on a story and need insight from the experts, we'd love to hear from you.
Thank you for contacting us. We'll be in touch shortly.

Getting Harassed by Robocalls?

Try YouMail's reverse phone lookup in our community directory! It's the place where millions of YouMailers go to search for and report nuisance phone numbers.