Identify unknown callers from Aurora, Illinois (331 area code)
ABOUT THIS AREA CODE
Illinois
Central Time Zone
Residents in 331 area
UNDERSTANDING 331 CALLS
If you received a call from a number starting with (331), it likely originates from the Aurora, Illinois area, which is home to approximately 1,500,000 people. Area code 331 is assigned to the Central time zone, so legitimate business calls typically occur during standard business hours in that zone.
However, modern technology allows scammers to "spoof" any area code, making their calls appear to come from Aurora when they may actually originate from anywhere in the world. This is why receiving a call from a 331 number does not guarantee the caller is actually in Illinois.
The most reliable way to identify who called you from a 331 number is to search the full 10-digit phone number using our lookup tool above. Our search checks public records, carrier databases, and community spam reports to help you determine whether a call is legitimate or potentially dangerous.
Below, we break down the most common types of calls people report receiving from 331 numbers, along with current scam patterns targeting the Aurora area.
COMMON CALLER TYPES
Many calls from 331 are legitimate — doctor's offices, pharmacies, schools, and businesses in Aurora use this area code. Search the number above before assuming it's spam.
Scammers 'spoof' area code 331 to make calls appear local and trustworthy. Just because a call shows a 331 number doesn't mean it actually originates from Aurora.
Real government agencies in Illinois may call from 331 numbers, but they will never demand immediate payment or threaten arrest over the phone.
Automated systems make millions of calls daily using spoofed local numbers. If you answer a robocall from a 331 number, hang up immediately — pressing any button confirms your number is active.
SCAM ALERTS
These scam types are frequently reported from numbers using the 331 area code. Scammers spoof local numbers, so a call appearing from 331 may originate elsewhere.
Caller offers heavily discounted health insurance plans to collect your personal and financial information for identity theft.
Aggressive caller threatens legal action over debts you don't owe. Real collectors must send written validation within 5 days.
Caller claims you missed jury duty and face arrest, demanding immediate payment of a fine to avoid a warrant.
Stay Safe: Never share personal information, Social Security numbers, or financial details with incoming callers. If suspicious, hang up and search the number above.
PROTECTION TOOLS
If you're receiving frequent spam calls from 331 numbers, these tools can help block robocalls and telemarketers automatically.
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Premium call screening device with customizable block lists. Blocks robocalls, telemarketers, and spoofed numbers.
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WHAT TO DO NEXT
Step 1: Don't call back. If you missed the call, do not return it until you've identified the number. Some scams rely on you calling back premium-rate numbers. Learn about callback scams.
Step 2: Search the number. Enter the full 10-digit number in our search tool above. We'll check public records, carrier information, and community reports to identify the caller.
Step 3: Check for voicemail. Legitimate callers — doctors, schools, businesses — will leave a voicemail. Scammers rarely do, or they leave urgent-sounding automated messages designed to create panic.
Step 4: Block and report. If the number is spam, block it on your phone and report it to the FTC at reportfraud.ftc.gov. You can also report unwanted calls to the FCC and your phone carrier.
Step 5: Register on Do Not Call. Add your number to the National Do Not Call Registry at donotcall.gov. While this won't stop all scam calls, it reduces legitimate telemarketing calls and gives you legal recourse.
FREQUENTLY ASKED QUESTIONS
Calls from area code 331 originate from the Aurora, Illinois region, which serves approximately 1,500,000 residents. The caller could be a local business, medical office, school, government agency, or unfortunately, a scammer spoofing a local number. Use the search tool above to identify the specific number.
Not all calls from 331 are scams. Area code 331 is a legitimate code serving Aurora and surrounding areas. However, scammers frequently spoof local area codes to appear trustworthy. If you don't recognize the number, search it before calling back.
You can block specific 331 numbers on your phone by going to your recent calls, selecting the number, and choosing 'Block.' For broader protection, consider a call-blocking device or app, and register your number on the National Do Not Call Registry at donotcall.gov.
Do not call back unknown numbers from 331 or any area code without first searching them. Some scammers use 'one-ring' schemes where they call and hang up, hoping you'll call back a premium-rate number. Search the number above first.
Report scam calls from 331 numbers to the FTC at reportfraud.ftc.gov, the FCC at consumercomplaints.fcc.gov, and your phone carrier's spam reporting service. You can also search and flag the number on our site to help warn others.
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