303 . NORTH AMERICAN NUMBERING PLAN CODE COLORADO


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303 (also referred to as Numbering Plan Area) is a numbering plan code designated for Colorado. Phone area codes in North America were introduced in 1947.

Most of the telephone numbers in the numbering plan are assigned to United States and Canada with a small part assigned to some locations in the Caribbean

Arvada, Aurora, Boulder, Brighton, Broomfield, Castle Rock, Castlewood, Columbine, Commerce City, Denver, Englewood, Highlands Ranch, Ken Caryl, Lafayette, Lakewood, Littleton, Longmont, Loveland, Northglenn, Parker, Southglenn, Thornton, Westminster, Wheat Ridge are the major cities located in NPA Code 303

303 Area - posts

Report for 1-3032191656 - 2020-09-21
Called no vm, blocked


Report for 1-3032191656 - 2020-09-07
called no one on the line. Called the number back and it didn't ring.


Report for 1-3033377707 - 2020-08-29
Called claiming to be Social Security Administration and stated they needed a call back or have lawyer call immediately


Report for 1-3033204764 - 2020-08-09
I just received the same one....


Report for 1-3035787922 - 2020-07-30
Hi , Rachel, called my cell twice today. She didn't leave


Report for 1-3037923167 - 2020-07-24
I let them have it!


Report for 1-3035867659 - 2020-07-10
Same as other calls reported. This is the second time this has happened.


Report for 1-3037900770 - 2020-06-24
Same as everyone else - they call, leave no message, and when I


Report for 1-3037475684 - 2020-06-22
Calls over and over. Leaves no message. Probably a scam for health insurance. Calls everyday


Report for 1-3037475684 - 2020-05-24
I was called today and it was for some cancer info.


Report for 1-3037900770 - 2020-05-22
You are part of the scam. DO NOT FALL FOR IT. Report the call as a fraud, call them back and threaten them with the police. Then tell them that you report them to your local Law Enfartment. That's all you can do to stop them, but it sure is the best thing you can do.


Report for 1-3035328688 - 2020-03-21
I have received 7 calls recently from this number. I am now blocking it. I'm on the Do Not Call Registry.


Report for 1-3038826973 - 2020-03-14
Calls everyday even on a Sunday night. Leaves a voicemail only.


Report for 1-3032042039 - 2020-02-21
Just rang a second ago, and again at 1:45 pm. BLOCKED


Report for 1-3035785552 - 2020-02-11
Just got a call on a phone I've only had 2 days..left no message..I had my phone number for over 4 years..


Report for 1-3033377707 - 2020-02-08
I just received a missed call from this number and no message was left. I called the number back, it would not accept anymore calls. Thanks for the heads up!


Report for 1-3036576470 - 2020-02-08
Called at 10:10am EST did not leave any message!


Report for 1-3032199713 - 2020-02-07
This is a scam call.


Report for 1-3032336006 - 2020-02-06
I receive at least one phone call every day from this number. Since I have caller ID, I don't know whom or where the hell they are calling. If they keep it up, I will be blocking this number!


Report for 1-3039961407 - 2020-01-30
Said they were calling from Publishers Clearing House and if I am married, I can get $100.000 when I go shopping! Blah blah blah blah! Scam!


Report for 1-3032149998 - 2020-01-25
I just got a call from them yesterday and today so now that I checked here I now know what they are.


Report for 1-3036576470 - 2020-01-22
They called my cell phone about my unsecured debt (I don't have any). Took me 2 minutes of saying "hello". I asked if they were a collection agency. He responded with, "no" and hung up. I blocked him.


Report for 1-3035866729 - 2020-01-16
Just called the number back and a recording stated that I won a free trip..... I hung up after that.


Report for 1-3036384399 - 2020-01-15
Caller ID just said Canada. No message. I don't know anyone in Ontario so I blocked the number.


Report for 1-3038826973 - 2020-01-15
Did not leave VM


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