623 Area Code – Glendale Location, Zip & Time Zone

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📞 623 Area Code — Quick Reference
📍 LocationGlendale, Arizona
🕐 Time ZoneMountain (UTC-7)
🗓️ StatusActive — Geographic

Got a call from 623? That number originates in Glendale, Arizona. Whether you received an unexpected call from this number or you’re trying to figure out where a 623 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 623 Area Code Located?

The 623 area code is located in Arizona, primarily serving Glendale 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 623 number with them after moving — so the code tells you where the number was issued, not necessarily where the person is right now.

623 Area Code — Location Details
State/ProvinceArizona (AZ)
Major CityGlendale
CountryUnited States (+1)
Time ZoneMountain (UTC-7)
TypeGeographic — Standard
NANPA StatusActive

🕐 623 Area Code Time Zone

The 623 area code operates in the Mountain Time Zone (UTC-7). Here’s how it compares to other US time zones:

Time ZoneDifference from 623
Eastern Time+2 hours
Central Time+1 hour
Mountain TimeSame time
Pacific Time-1 hour
💡 Calling Tip: Reach someone in the 623 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 623 Area Code Spam or Scam?

Seeing 623 on your caller ID doesn’t automatically mean spam — it’s a real area code used by many in Glendale. But robocallers frequently disguise their actual numbers behind familiar area codes like 623. If a 623 call feels off, hang up and verify independently.

⚠️ Red Flag: If a 623 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 623 Spam Calls & Texts

Block on iPhone

  1. Open Phone → tap Recents
  2. Tap ⓘ next to the 623 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 623 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 623? 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 623 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
480Scottsdale, ArizonaMountain
602Phoenix, ArizonaMountain
520Tucson, ArizonaMountain
928Yuma, ArizonaMountain

❓ 623 Area Code — FAQ

What state is 623 area code in?
The 623 area code is in Arizona, serving Glendale and surrounding areas.
What city does 623 cover?
623 primarily covers Glendale and nearby communities in Arizona.
Is 623 toll-free?
No. 623 is a geographic area code. Toll-free codes are 800, 833, 844, 855, 866, 877, 888.
What time zone is 623?
Mountain (UTC-7).
Is 623 a scam?
623 is legitimate — it serves real people in Glendale. But scammers may spoof 623 numbers. Verify suspicious callers independently.
Why do I keep getting 623 calls?
Repeated 623 calls without a known contact are likely robocalls. Use your phone’s Silence Unknown Callers feature.
Can I get a 623 number remotely?
Yes — VoIP services like Google Voice offer 623 numbers regardless of where you live.
Is 623 cell or landline?
623 covers both. US area codes don’t distinguish between mobile and landline.
How do I block 623 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/