664 Area Code Guide – United States Map, Zip & Scams

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📞 664 Area Code — Quick Reference
📍 LocationPlymouth, Mississippi
🕐 Time ZoneCentral (UTC-6/UTC-5)
🗓️ StatusActive — Geographic

The 664 dialing code belongs to Plymouth, Mississippi. Whether you received an unexpected call from this number or you’re trying to figure out where a 664 number is based, this guide covers the exact location, time zone, spam reputation, blocking instructions, and which cities fall under this code.

📍 Where Is the 664 Area Code Located?

The 664 area code is located in Mississippi, primarily serving Plymouth and the surrounding region. It’s a standard geographic area code under the North American Numbering Plan (NANP). Keep in mind that mobile number portability means someone could carry a 664 number with them after moving — so the code tells you where the number was issued, not necessarily where the person is right now.

664 Area Code — Location Details
State/ProvinceMississippi (MS)
Major CityPlymouth
CountryUnited States (+1)
Time ZoneCentral (UTC-6/UTC-5)
TypeGeographic — Standard
NANPA StatusActive

🕐 664 Area Code Time Zone

The 664 area code operates in the Central Time Zone (UTC-6/UTC-5). Here’s how it compares to other US time zones:

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 Business hours (good to call)     Early / late hours     Night — do not call
Official Resources: Report Fraud — FTC Do Not Call Registry NANPA Directory
Time ZoneDifference from 664
Eastern Time+1 hour
Central TimeSame time
Mountain Time-1 hour
Pacific Time-2 hours
💡 Calling Tip: Reach someone in the 664 area between 10 AM – 4 PM their local time for the best chance of an answer. Calls outside those hours are more likely to be screened or ignored.

🛡️ Is 664 Area Code Spam or Scam?

Area code 664 is 100% legitimate — it serves Plymouth, Mississippi. The problem is that scammers spoof 664 numbers constantly because people trust local-looking calls. The most common 664 scams involve fake utility shutoff threats, vehicle warranty extensions, and Social Security impersonation.

⚠️ Red Flag: If a 664 caller demands immediate payment via gift cards, wire transfer, or crypto — hang up. No legitimate organization uses these methods. Verify by calling the company’s official number directly.

How to verify: Don’t call back the number — look up the official number for whatever organization the caller claimed to represent and call that instead. Google the full 10-digit number in quotes to check if others have reported it as spam.

📵 How to Block 664 Spam Calls & Texts

Block on iPhone

  1. Open Phone → tap Recents
  2. Tap ⓘ next to the 664 spam number
  3. Scroll down → “Block this Caller”
  4. Silence all unknowns: Settings → Phone → Silence Unknown Callers → ON

Block on Android

  1. Open Phone → find the 664 number
  2. Tap ⋮ menu → “Block number”
  3. For broader blocking: Settings → Blocked numbers → Unknown toggle ON

Report Spam

  1. Forward spam texts to 7726 (SPAM)
  2. Report at reportfraud.ftc.gov
  3. Register at donotcall.gov or call 1-888-382-1222

🔍 Who Called from 664? Reverse Lookup

  1. Google the full 10-digit number in quotes — catches ~70% of unknown callers
  2. Check Whitepages.com or Truecaller.com
  3. Search 800notes.com for community reports
  4. No voicemail left? Almost certainly spam — legitimate callers leave messages
⚠️ One-Ring Scam: If a 664 number rings once and hangs up, do NOT call back. This scam connects you to a premium-rate line that charges your bill.

🔗 Nearby Area Codes

CodeLocationTime Zone
601Jackson, MississippiCentral
662Tupelo, MississippiCentral
228Gulfport, MississippiCentral
769Jackson, MississippiCentral

❓ 664 Area Code — FAQ

What state is 664 area code in?
The 664 area code is in Mississippi, serving Plymouth and surrounding areas.
What city does 664 cover?
664 primarily covers Plymouth and nearby communities in Mississippi.
Is 664 toll-free?
No. 664 is a geographic area code. Toll-free codes are 800, 833, 844, 855, 866, 877, 888.
What time zone is 664?
Central (UTC-6/UTC-5).
Is 664 a scam?
664 is legitimate — it serves real people in Plymouth. But scammers may spoof 664 numbers. Verify suspicious callers independently.
Why do I keep getting 664 calls?
Repeated 664 calls without a known contact are likely robocalls. Use your phone’s Silence Unknown Callers feature.
Can I get a 664 number remotely?
Yes — VoIP services like Google Voice offer 664 numbers regardless of where you live.
Is 664 cell or landline?
664 covers both. US area codes don’t distinguish between mobile and landline.
How do I block 664 calls?
iPhone: Settings → Phone → Silence Unknown Callers. Android: Phone → Settings → Blocked numbers. For area-code blocking, use Truecaller or RoboKiller.

🔗 Related Area Code Guides

Updated April 2026 · Data from NANPA & FCC · areacodess.org/