Block Robocalls for Free with YouMail.
Over 10 Million Users!

Top 20 Robocallers to San Francisco Bay Area, CA in December 2018

Robocaller Place of Origin Carrier Caller ID Caller Type
1. 800-787-4196 Toll Free Toll Free (800) 787-4196 Debt Collector
2. 800-266-2278 Toll Free Toll Free Customer Call Customer Call
3. 408-385-2640 San Francisco Bay Area, CA O1 Communications Unknown Google Listing Scam
4. 877-647-8552 Toll Free Toll Free Wells Fargo Bank/Credit Card Payment Reminder
5. 800-955-6600 Toll Free Toll Free Capital One Bank/Credit Card Payment Reminder
6. 800-358-2090 Toll Free Toll Free Unknown Chinese Language Scam
7. 510-379-9303 San Francisco Bay Area, CA Twilio Substitute Teacher Alert Substitute Teacher Alert
8. 713-568-6986 Houston, TX Level 3 Communications Prison Call Payment Prison Call Consent
9. 408-357-2140 San Francisco Bay Area, CA Telnyx, LLC Unknown Vehicle Warranty Scam
10. 800-887-5749 Toll Free Toll Free Unknown Unknown Robocaller
11. 562-401-5940 Los Angeles, CA Frontier Prescription Shipped Alert Service Alert
12. 415-729-1621 San Francisco Bay Area, CA Exiant Communications, LLC Dish Network Auth Retailer Unknown Robocaller
13. 800-942-3767 Toll Free Toll Free Substitute Teacher Alert Substitute Teacher Alert
14. 623-734-1507 Phoenix, AZ MCI Metro ATS AMERICAN FIRST Unknown Robocaller
15. 800-732-9194 Toll Free Toll Free Financial Customer Call Interest Rate Scam
16. 669-266-6750 San Francisco Bay Area, CA Bandwidth.com CLEC, LLC Prison Call Payment Prison Call Payment
17. 800-378-7262 Toll Free Toll Free Insurance Payment Reminder Debt Collector
18. 888-895-5641 Toll Free Toll Free PayPal Debt Collector
19. 818-452-0258 Los Angeles, CA Bandwidth.com CLEC, LLC (818) 452-0258 Unknown Robocaller
20. 800-743-5000 Toll Free Toll Free Unknown Service Payment Reminder

Robocalls by Category

How the YouMail Robocall Index™ Works

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.


as seen on...