428 Area Code Map – United States Cities & Zip Codes

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📞 428 Area Code — Quick Reference
📍 LocationFredericton, New Brunswick
🕐 Time ZoneAtlantic (UTC-4/UTC-3)
🗓️ StatusActive — Geographic

The 428 prefix covers Fredericton and its surrounding communities in New Brunswick. Whether you received an unexpected call from this number or you’re trying to figure out where a 428 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 428 Area Code Located?

The 428 area code is located in New Brunswick, primarily serving Fredericton 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 428 number with them after moving — so the code tells you where the number was issued, not necessarily where the person is right now.

428 Area Code — Location Details
State/ProvinceNew Brunswick (NB)
Major CityFredericton
CountryCanada (+1)
Time ZoneAtlantic (UTC-4/UTC-3)
TypeGeographic — Standard
NANPA StatusActive

🕐 428 Area Code Time Zone

The 428 area code operates in the Atlantic Time Zone (UTC-4/UTC-3). 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 428
Eastern Time-1 hour
Central Time-2 hours
Mountain Time-3 hours
Pacific Time-4 hours
💡 Calling Tip: Reach someone in the 428 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 428 Area Code Spam or Scam?

Seeing 428 on your caller ID doesn’t automatically mean spam — it’s a real area code used by many in Fredericton. But robocallers frequently disguise their actual numbers behind familiar area codes like 428. If a 428 call feels off, hang up and verify independently.

⚠️ Red Flag: If a 428 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 428 Spam Calls & Texts

Block on iPhone

  1. Open Phone → tap Recents
  2. Tap ⓘ next to the 428 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 428 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 428? 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 428 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
506Saint John, New BrunswickAtlantic
879Saint John, New BrunswickAtlantic

❓ 428 Area Code — FAQ

What state is 428 area code in?
The 428 area code is in New Brunswick, serving Fredericton and surrounding areas.
What city does 428 cover?
428 primarily covers Fredericton and nearby communities in New Brunswick.
Is 428 toll-free?
No. 428 is a geographic area code. Toll-free codes are 800, 833, 844, 855, 866, 877, 888.
What time zone is 428?
Atlantic (UTC-4/UTC-3).
Is 428 a scam?
428 is legitimate — it serves real people in Fredericton. But scammers may spoof 428 numbers. Verify suspicious callers independently.
Why do I keep getting 428 calls?
Repeated 428 calls without a known contact are likely robocalls. Use your phone’s Silence Unknown Callers feature.
Can I get a 428 number remotely?
Yes — VoIP services like Google Voice offer 428 numbers regardless of where you live.
Is 428 cell or landline?
428 covers both. US area codes don’t distinguish between mobile and landline.
How do I block 428 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/