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.

YouMail has stopped over 1 billion robocalls from ever being made — and counting! Totally free service.

April 2018 Area Code 773 Robocall Data

35.8 million robocalls were placed to area code 773 in April 2018,equaling roughly 11.6 calls per person affected.

Top 20 Robocallers to Area Code 773 in April 2018 (by volume)

Updated 5/1/2018

Robocaller Caller ID Caller Type
866-718-4777 Securus Inmate Prison Inmate
800-955-6600 Capital One Payments/Collections Payments/Debt
800-266-2278 Comcast Customer Service/Bill Collector Cable Company Debt Collection
773-553-5700 Chicago Public Schools Information Line School Informational Message
773-273-6136 Health Insurance Spam Health Insurance Spam Call
973-854-0915 Real Estate Purchase Spam Real Estate Telemarketing
980-242-3698 Health Insurance Spam Health Insurance Spam Call
877-710-1116 Collect Call from Prison Prison Inmate
844-349-6207 (844) 349-6207 Retail Debt Collection
866-890-3387 First Premier Bank Payments/Debt
630-492-8297 (630) 492-8297 Unknown Robocaller
954-369-4797 Portfolio Recovery Financial Lender
800-321-9637 Exeter Debt Collection Auto Loan Debt Collection
866-456-0695 Barkley Payments/Debt
217-801-9331 Verizon Wireless Phone Company
866-453-2636 Generic Robocaller Credit Card Debt Collection
312-560-1099 David Heller Unknown Robocaller
866-214-9536 Prison Call Consent Prison Inmate
517-219-1107 (517) 219-1107 Financial Lender
866-466-4502 Allied Interstate Financial Services

Illinois Cities in Affected Area

Arlington Heights, Bensenville, Calumet City, Chicago, Cicero, Des Plaines, Dolton, Elk Grove Village, Elmwood Park, Evanston, Evergreen Park, Harwood Heights, Hinsdale, Lincolnwood, Mount Prospect, Oak Brook, Oak Park, Park Ridge, Riverdale, River Grove, Schiller Park, Summit Argo, Wood Dale

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.

Every Telecom Service Can Now Stop Robocalls

The same API YouMail uses to reliably identify and block robocalls is now available to protect everyone. It's just one simple API call to determine whether a caller is a problem.
Single String to YouMail's server
Telco Sends a Number Calling in:
curl ''
Virtually instantaneous response to telco company letting them know if the caller has been identified as a robo/spam, allowing the telco to block the call before the recipient is bothered.
YouMail Responds Instantly with Spam/Robo Flag:
{"statusCode":10000,"recordFound":true,"phoneNumber:"9991002000","spamRisk":{"level":1,"reasonLabel":"SPAM_OTHER","reasonCode":5999,"reasonMessage":"This caller has been determined to be a spammer."},"timestamp":"2016-10-05T00:55:50.526Z"}
A simple API call allows anyone to determine if a number is definitely spam, likely spam, or not spam. The results are drawn directly from our intelligent algorithms that combine call patterns and crowdsourced spam data.
Nearly 15 billion robocalls were made in the U.S. during the first half of 2017, according to YouMail, which provides anti-robocall services.
If it seems like you're getting more robocalls than ever, experts say you're right. But the people who are calling are not telemarketers.
For all the fancy technology of smartphones, robocalls remain a nearly unstoppable problem.
Robocalling soars despite 'Do Not Call' registry, as scammers 'couldn't care less' about bothering consumers.