Who's calling from area code 331?
Area code 331 serves Aurora, Illinois in Illinois. A 331 caller can be a real Aurora number or a spoofed robocall that only borrows the code. The only way to know is to check the specific number.
Search a 331 number privately
Private 60-second report. The owner is not notified.
Location
Aurora, IL
Timezone
Central Time
Number format
+1 (NXX) NXX-XXXX
Same-area codes
None
What to know about 331 numbers
Area code 331 is assigned to Aurora, Illinois. Because of number portability, a 331 holder may have moved away, so the code reflects where the number was issued rather than where the caller is now.
Common legitimate reasons a 331 number may call
Most 331 calls are ordinary. A few of the everyday reasons a real call shows this code:
- A local resident or business in Aurora or the wider IL area.
- Someone who kept their 331 number after moving away — number portability means the code follows the person, not the place.
- A delivery driver, clinic, school, or service provider returning your call from a local line.
- A recruiter, landlord, or seller you contacted first through a listing or application.
Phone scam patterns to know (nationwide)
These are general patterns reported across the US, not statistics specific to area code 331. Any area code can be spoofed, so treat the patterns below as universal safety guidance.
Spoofed local numbers
Robocallers fake a 331 caller ID so the call looks like a Aurora neighbor. The number on your screen may not be the number that actually dialed.
Bank and delivery impostors
Texts and calls claiming a frozen account or a missed package, sent from 331 numbers to feel local. Real banks and carriers do not ask for codes or card numbers by phone.
One-ring callback bait
A 331 number rings once and hangs up, hoping you call back. Look the number up before returning any missed call you do not recognize.
Marketplace and rental scams
Buyers and landlords you only know from a listing, texting from a 331 number. If the number turns out to be VoIP with no identity attached, walk away.
These patterns are national; the area code is just the costume. Judging a call by its area code alone protects no one, which is why checking the full number matters. More on this in Is this phone number a scam?
Matched with someone using a 331 number?
If someone you met on a dating app gave you a 331 number, that is a checkable claim. A real Aurora local usually has a mobile number with a consistent name, linked profiles, and some public history attached. A catfish usually has a VoIP line created last month with nothing behind it.
A private lookup shows which one you are talking to before you invest more time, or meet anyone. See how to verify someone before meeting and how to spot a catfish.
Area code 331 questions
Where is area code 331?
Area code 331 serves Aurora, Illinois in Illinois. It runs on Central Time.
Who is calling me from a 331 number?
A 331 caller can be anyone from a Aurora business or resident to a spoofed robocall that only borrows the code. Caller ID alone cannot tell you which. A reverse phone lookup on the full number shows the likely owner, the carrier and line type, and risk indicators in about 60 seconds.
Are calls from area code 331 a scam?
Not by default. 331 is a legitimate Aurora area code used by millions of real people. But scammers spoof big-metro codes like 331 because they look familiar and local. Treat any unexpected call asking for payment, codes, or personal details as suspect, and check the specific number rather than judging by the area code.
Why does a 331 number keep calling and hanging up?
Repeated short calls from the same 331 number usually mean an autodialer testing whether your line is live. Answering or calling back confirms your number is active and tends to increase the volume. Look the number up first, and if it shows risk signals, block it.
Can I find out who owns a 331 phone number?
Yes. Enter the full 331 number into StoryCheck and the report shows the likely owner, carrier and line type, linked public profiles, and a risk score, drawn from public and licensed data. The search is private and the owner is not notified.
Nearby and related area codes
Got a 331 number to check?
Run a private report on any phone number. Likely owner, line type, linked profiles, and risk score in about 60 seconds.
Run a phone checkLast updated July 2026