Discovering the truth about a phone number, email, or address history can be eye-opening, please use this tool with caution.USA Area code 557 - Missouri, MO
Area code 557 is a North American Numbering Plan telephone area code serving Telephone area code for St. Louis, Missouri in Missouri. It was activated in 1947 .
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Who called me from area code 557?
A call from area code 557 most likely originates from Missouri or elsewhere in Missouri - but caller ID spoofing means the area code alone cannot confirm who called. Right now, 6 557 numbers carry scam reports on this page. The only reliable way to identify the caller is to check the full 10-digit number:
- Run the number through the reverse phone lookup at the top of this page to see the owner's name, carrier, and location.
- Compare it against the recently reported scam numbers in 557 below.
- If the call was unwanted, report it to the FTC and use the report form on this page so other 557 residents see it.
Report a scam call from 557 Help other 557-area residents - takes 20 seconds, no signup
Reports are reviewed by our team before appearing on the page. The highest-reported numbers get added to the “Recently reported scam numbers” list above with a “community” badge.
Should I answer a call from a 557 number? Take the 30-second quiz - 5 questions, verdict + advice
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Next step: run a reverse-phone lookup on the number to see everything public about it.
Area codes near 557 (overlay + neighboring)
If a caller ID shows one of these codes, the call is probably still from the Missouri area or a nearby region. Click any code to see its own page.
557 area code robocall complaints (FCC data)
Monthly count of FCC complaints tagged to numbers in area code 557 over the last 12 months.
Source: FCC Consumer Complaint Data (dataset vakf-fz8e). Data as of August 9, 2026. Refreshed monthly.
How 557 area code spam calls arrive
Based on 6 FCC complaints in the last 12 months, here's how 557 spam calls reached recipients:
FCC Consumer Complaint Data, last 12 months as of August 9, 2026. Refreshed monthly. Note: the FCC dataset labels method (Live Voice / Prerecorded / SMS) but does not classify scam type (IRS impersonation, tech support fraud, etc.) - those come from community reports.
Recently reported scam numbers in 557
Numbers reported to the FCC or by our community in the last 12 months. Click any to run a full reverse-phone lookup.
Source: FCC Consumer Complaint Data, last 12 months as of August 9, 2026. Refreshed monthly. Numbers submitted via the report form near the top of this page get added here with a “community” badge after moderation.
How to block 557 spam calls (by carrier)
Getting repeated spam calls from 557 numbers around Missouri, Missouri? You can't legitimately block every 557 call without also missing legitimate ones from Missouri, Missouri - so the practical fix is to turn on your carrier's free spam filter and register on the national do-not-call list. Step-by-step for each major US carrier below.
AT&T
- Download the free AT&T ActiveArmor app (iOS + Android).
- Sign in with your wireless number.
- Enable Fraud Blocking and Suspected Spam Warning.
- To block a specific number, tap the call in your history → Block.
Verizon
- Download the free Verizon Call Filter app (iOS + Android).
- Sign in with your Verizon account.
- Turn on Spam Filter.
- To block a specific number: My Verizon → Blocks → Add Number.
T-Mobile
- Download the free Scam Shield app (iOS + Android).
- Enable Scam Block (blocks known scam calls silently).
- Use Scam ID to see “Scam Likely” caller ID on suspicious numbers.
- To block a specific number, dial
#662#from your device.
All carriers
- Register on the FTC's National Do-Not-Call list.
- Report unwanted calls to the FCC at fcc.gov/complaints.
- On iPhone: Settings → Phone → Silence Unknown Callers.
- On Android: Phone app → ⋮ → Settings → Caller ID & spam.
Sources: carrier support pages (AT&T, Verizon, T-Mobile), FCC consumer guides. Free features as of 2026. Every one of these steps costs nothing.
History of the 557 area code
state of Missouri, serving the city of St. Louis and most of its inner-ring suburbs in neighboring St. Louis County.
557 area code FAQ: common questions
What area code is 557?
Area code 557 is a North American Numbering Plan area code that serves Telephone area code for St. Louis, Missouri in Missouri, primarily including Missouri and surrounding communities. It was activated in 1947.
Where does area code 557 cover?
Area code 557 covers St. Louis County, including cities such as .
Is 557 a real area code or a scam?
557 is a real, actively-assigned US area code - not itself a scam. However, spammers do use 557 numbers because the code is well-known and appears local to millions of residents. Always verify the specific number, not the area code.
How do I block 557 spam calls?
You cannot legitimately block an entire area code without also blocking legitimate calls from Missouri. Better options: register on the National Do-Not-Call list, enable your carrier's spam-filter (all major US carriers now offer this free), and report unwanted calls to the FCC at fcc.gov/complaints so they show up in the trend data on this page.
What's the overlay area code for 557?
557 shares coverage with overlay code 314. That means new phone numbers issued in the same geographic area may have either area code, and 10-digit dialing is required.
Sources
Or explore reverse-phone lookup for any US number.