US Area Codes Directory
Find the location of any US phone number. Look up 358 area codes across 56 states and check if unknown callers might be spam.
358
Area Codes
56
States
50+
Toll-Free Codes
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Alaska1
American Samoa1
California37
Lodi
Los Angeles
Arden-Arcade
Los Angeles
Los Angeles
Oakland
santa rosa
Gilroy
San Francisco
Beverly Hills
Apple Valley
Alameda
Chico
Clovis
Bellflower
Chula Vista
Alhambra
santa rosa
San Francisco
Daly City
Anaheim
Earlimart
San Jose
Benicia
Anaheim
Burbank
Apple Valley
Camarillo
Agoura Hills
Camarillo
Salinas
San Diego
Anaheim
Elk Grove
Antioch
Costa Mesa
Corona
Connecticut4
Delaware1
District Of Columbia1
Florida18
Guam1
Hawaii1
Illinois16
Maine1
Massachusetts9
michigan1
Michigan13
Missouri8
Montana1
Nebraska3
New Hampshire1
New Jersey10
New Mexico2
New York19
North Carolina9
North Dakota1
northern mariana islands1
Ohio14
Pennsylvania13
Rhode Island1
South Dakota1
Texas27
us virgin islands1
Vermont1
Virginia7
West Virginia2
Wyoming1
What is an Area Code?
An area code is a three-digit number that identifies a specific geographic region in the North American Numbering Plan (NANP). When you receive a call, the area code tells you where the call is originating from — though with mobile phones and VoIP, callers can have numbers from anywhere.
Types of Area Codes
- Geographic Area Codes — Assigned to specific cities or regions (e.g., 212 for New York City)
- Overlay Area Codes — Added to existing regions when numbers run out (e.g., 332 overlays 212)
- Toll-Free Area Codes — 800, 888, 877, 866, 855, 844, 833 — caller pays nothing
- Premium Rate Codes — 900 numbers that charge the caller
How to Identify Spam Calls by Area Code
While you can't definitively identify spam by area code alone (spammers spoof numbers), certain patterns can be suspicious:
- Calls from area codes you have no connection to
- Multiple calls from different numbers in the same unfamiliar area code
- Toll-free numbers claiming to be from government agencies
- Area codes that match yours exactly (neighbor spoofing)
For reliable spam detection, use our free Spam Check API or let SkipCalls AI screen your calls automatically.
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