Area Code 303

Where is area code 303?

Area code 303 serves Colorado, covering Denver, Denver, Denver, Longmont, Aurora. In total our directory records 800 phone prefixes in this area code, spread across 21 cities and 8 counties.

The area code sits in the Mountain time zone (UTC-07:00), where the local time is now approximately 2:58 PM. The oldest prefix on record here entered service on 1994-02-04, and the newest on 2012-11-09.

Of the prefixes with a known line type, 23% are wireless and 77% landline — 181 mobile against 601 fixed-line prefixes.

Where is area code 303?

Area code 303 serves Colorado, including Denver. It covers 21 cities across 8 counties, in the Mountain time zone.

What time is it in area code 303?

Area code 303 observes Mountain time (UTC-07:00). The current local time is approximately 2:58 PM.

When was area code 303 introduced?

The earliest phone prefix recorded in area code 303 was put in service on 1994-02-04. The most recent was activated on 2012-11-09.

Is a call from 303 safe to answer?

Our directory holds 5,543 caller reports covering 1,279 numbers in area code 303. A valid area code does not guarantee a legitimate caller, since numbers can be spoofed.

What cities are in area code 303?

The largest places served by area code 303 are Denver, Denver, Denver, Longmont, Aurora, Fort Lupton, Littleton, Golden. In total it covers 21 cities across 8 counties.

How is a 303 phone number written?

A number in this area code is written +1 (303) XXX-XXXX in international format, or (303) XXX-XXXX domestically. The +1 is the country code shared by the United States, Canada and other NANP members.

Can scammers fake a 303 number?

Yes. Caller ID was built without verification, so a caller can display almost any number. Scammers often pick a number matching the area code of the person they are calling — known as neighbour spoofing — because a local-looking call is answered more often. The US industry response, STIR/SHAKEN, lets carriers sign and verify caller ID, but coverage is still incomplete.

Why do I get calls from numbers with my own area code?

Almost always neighbour spoofing: the caller fabricates a number sharing your area code, and sometimes your prefix, so the call looks like it comes from someone nearby. A matching area code is not evidence that the caller is local.

How do I report a spam call from 303?

Report unwanted calls to the FTC at reportfraud.ftc.gov, and add your number to the Do Not Call registry at donotcall.gov. Include the caller ID number even if you believe it was spoofed — regulators use the pattern of reports, not the individual number.