Phone Prefix
(303) 621-XXXX
CO • DENVER
Search Number in This Prefix
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Carrier Information
NANPA
State
CO
Region
WE
Rate Center
DENVER
Assigned To
QWEST CORPORATION
OCN
9636
Status
RT
Number Range
First Number
(303) 621-0000
Last Number
(303) 621-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
29 reports
29
Total FCC + FTC DNC complaints for numbers in this prefix
Top 26 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (303) 621-2151 3036212151 | 2 |
| 2 | (303) 621-1019 3036211019 | 2 |
| 3 | (303) 621-7420 3036217420 | 2 |
| 4 | (303) 621-0998 3036210998 | 1 |
| 5 | (303) 621-1064 3036211064 | 1 |
| 6 | (303) 621-1121 3036211121 | 1 |
| 7 | (303) 621-1548 3036211548 | 1 |
| 8 | (303) 621-2051 3036212051 | 1 |
| 9 | (303) 621-2157 3036212157 | 1 |
| 10 | (303) 621-2354 3036212354 | 1 |
| 11 | (303) 621-2406 3036212406 | 1 |
| 12 | (303) 621-2460 3036212460 | 1 |
| 13 | (303) 621-2513 3036212513 | 1 |
| 14 | (303) 621-3134 3036213134 | 1 |
| 15 | (303) 621-3830 3036213830 | 1 |
| 16 | (303) 621-3942 3036213942 | 1 |
| 17 | (303) 621-7012 3036217012 | 1 |
| 18 | (303) 621-8352 3036218352 | 1 |
| 19 | (303) 621-8620 3036218620 | 1 |
| 20 | (303) 621-8737 3036218737 | 1 |
| 21 | (303) 621-8821 3036218821 | 1 |
| 22 | (303) 621-9842 3036219842 | 1 |
| 23 | (303) 621-0171 3036210171 | 1 |
| 24 | (303) 621-9978 3036219978 | 1 |
| 25 | (303) 621-0193 3036210193 | 1 |
| 26 | (303) 621-0862 3036210862 | 1 |
About This Prefix
Phone numbers starting with (303) 621 are part of the North American Numbering Plan (NANP). The first three digits (303) represent the Area Code (NPA), and the next three digits (621) represent the Central Office Code (NXX) or exchange.
- NPA (303) - Numbering Plan Area, identifies the geographic region
- NXX (621) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)