303 Phone Number Lookup: Denver, CO

The 303 area code is serving Denver and Boulder, as well as their surrounding suburbs, in the north-central portion of the U.S. state of Colorado. Look up any phone number starting with 303 area code. Results may include:

  • Owner name and address
  • Location based on area code
  • Scam and Spam reports by users
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Colorado Phone Number Lookups / 303

Most Common Area Code 303 Scams

Residents are seeing a spike in 303 area code calls involving fake FedEx delivery issues and Xcel Energy shut-off threats. These scammers want to panic you into paying immediate fees to avoid losing your power or packages.

Fake FedEx Delivery Scam

Scammers from numbers like 303-214-6058 call claiming to be FedEx Ground representatives named "Albert," "Miles," or "Zalma" about an undelivered package. They ask you to confirm your address and provide a tracking number, then direct you to call back an 833 number to resolve the fake issue. They sound unprofessional with background noise like people laughing, have your name and number but an incorrect address, and ask for tracking information that real delivery services already have. They use your personal information to steal packages or commit identity theft. Real FedEx representatives never ask customers to call 833 numbers for delivery issues. They show up at your door.

"Fake FedEx phone call . Call from this phone number saying there was a problem with a FedEx delivery asking me to call back on an 833 phone number and give them my information AND tracking number. When i called a verified FedEx number, they indicated that they DO NOT ask people to call back any number except their published **800** phone number."

Xcel Energy Shut-Off Threat

Automated calls from local 303 numbers claim to be Xcel Energy threatening to shut off your power in 30 to 45 minutes for a past-due bill. The message demands you press 1 to make immediate payment and avoid disconnection, creating high pressure to act without thinking. They use your payment information to steal money or rack up charges on your accounts. Xcel Energy provides multiple written notices via mail or email long before any disconnection. Real utility companies do not threaten shutoffs within the hour.

"Got a call from 303-442-8428 saying electricity would be turned off if I didn't pay, prompt to press 1 and I told the guy he was scamming me, my account is paid. Got online and checked balance also called xcel and this is a scam"

IRS Tax Lien & Arrest Warrant Scam

Scammers using names like "Jared," "Katia Brushia," or claiming to be from "BCT" call aggressively about tax liens or arrest warrants for unpaid taxes. They threaten arrest, use rude language like telling victims to "have fun paying 27000 dollars," and demand you verify personal information over the phone. They use your tax information to file fraudulent returns or steal your identity. The IRS never calls about tax debts as their first contact. They send official mail through the U.S. Postal Service.

"A women called looking for my husband. She said I have a tax lien. I told her I was not discussing anything with her. I will contact the IRS. I know I do not have one. She told me have fun paying 27000 dollars. Very rude. Be careful if they call you."

Social Security Number Suspension Scam

Robocalls or live callers claim your Social Security Number has been suspended due to fraudulent or illegal activity and threaten federal charges or arrest if you do not call back immediately. They ask for your SSN or other personal data to "verify" your identity during the callback. They use your Social Security number to open accounts, file tax returns, or steal your benefits. Your Social Security number cannot be suspended or canceled. The Social Security Administration handles problems through official mailed letters.

"Received a voicemail from this number claiming that my SSN was suspended and I needed to call them or face federal charges."

Fake Government Benefits Threat

Robocalls threaten to cancel government benefits like SNAP unless you press # to speak with a representative to keep your benefits active. These calls often come late at night after 8 p.m. and pressure you to act immediately to avoid losing assistance. They use your benefit information to steal payments or commit identity fraud. Government agencies administering benefits communicate through U.S. Mail, not robocalls. Real agencies do not threaten to terminate benefits by phone.

"calling after 8 pm robo call saying to press # if you wish to keep your government benefits or press# to speak to a representative"

Aggressive "Speak to the Owner" Scam

Callers target businesses demanding to speak with the owner, CFO, or manager by name while refusing to state their purpose. They use fake names like "Jim McDaniels" or "Sean Blair" and falsely claim to be from entities like the "Cherry Creek School District" or "Tucker Group." When questioned, they become rude, demanding, or angry, and hang up when challenged. They use access to business owners to pitch fraudulent services or steal company information. Legitimate business partners identify themselves clearly and professionally. They do not resort to rudeness to get past staff.

"Asked for business owner by name. When I asked him who he was, he just said he was from 'Tucker Group.' When I asked about the reason for the call, he said 'Just get *owner name* on the phone,' so I hung up on him. Bastard."

Vehicle Warranty Expiration Robocall

Persistent robocalls claim your car's warranty has expired or is about to expire, urging you to press a number to speak with a "specialist" to extend coverage. The automated message is vague and does not mention your car's specific make or model, pressuring you to "act now" to avoid being without coverage. They sell worthless or overpriced service plans that provide no real protection. Legitimate manufacturers and dealers contact you via mail with official branding about warranty status. They do not use generic robocalls to conduct business.

"left voice message for vehicle warranty expiration. That number in the voice message was 470-650-8272 - Britney"

Recently Reported Area Code 303 Spam Calls

Area Code 303 phone numbers reported as unwanted calls to the FTC in the last 30 days.

(303) 423-6297

10 reports ·

(303) 468-4065

10 reports ·

(303) 381-2624

8 reports ·

(303) 395-0849

6 reports ·

(303) 255-5351

5 reports ·

(303) 205-7915

4 reports ·

(303) 535-0892

4 reports ·

(303) 512-2188

3 reports ·

(303) 622-1672

2 reports ·

(303) 567-6739

2 reports ·

Is area code 303 a scam?

No, 303 is a legitimate area code serving the Front Range of Colorado, including Denver and Aurora. Scammers spoof 303 numbers to appear local to Colorado residents who recognize the familiar prefix.

Why do I get spam calls from area code 303?

Xcel Energy impersonation is highly localized here: callers threaten to shut off electricity within 45 minutes and demand immediate payment. IRS arrest-warrant calls using fake agent names and threatening $27,000 tax liens, and fake FedEx delivery address-harvesting scams, round out the dominant patterns.

Where Is Area Code 303 Located?

Phone numbers with the 303 area code prefix originate from the north-central portion of Colorado. This region specifically comprises the metropolitan areas of Denver and Boulder, along with their surrounding suburbs. It represents the primary numbering plan area for the state's Front Range, a densely populated region.

Major Cities:

  • Denver
  • Boulder
  • Aurora
  • Broomfield
  • Castle Rock
  • Lakewood
  • Littleton
  • Longmont

Other Cities and Towns:

  • Brighton
  • Roggen
  • Wiggins

Overlay System

The 303 area code operates as part of an overlay complex with area codes 720 and 983 , serving the same geographic region. Area code 303 was the original area code for the entire state of Colorado, introduced in 1947, and later reduced in geographic extent. Area code 720 was added as an overlay on September 1, 1998, followed by area code 983, which was activated on June 17, 2022. Due to this overlay system, ten-digit dialing is required for all calls made within this service area.

Area Code 303 Location Map

Area Code 303 Location on Colorado Map

Area code 303 is a general purpose code which was placed in service on January 1, 1947.

Prefixes by Rate Center

Rate Center Number of Prefixes
DENVER 706
LONGMONT 18
FORTLUPTON 11
DECKERS 5
KEENESBURG 3
ALLNSPKLYN 2
DEER TRAIL 2
GEORGETOWN 2
HUDSON 2
BENNETT 1
BYERS 1
ROGGEN 1
STRASBURG 1

Other Colorado Area Codes

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