Phone Prefix
(303) 643-XXXX
CO • DENVER
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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) 643-0000
Last Number
(303) 643-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
18 reports
18
Total FCC + FTC DNC complaints for numbers in this prefix
Top 18 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (303) 643-1948 3036431948 | 1 |
| 2 | (303) 643-1953 3036431953 | 1 |
| 3 | (303) 643-2640 3036432640 | 1 |
| 4 | (303) 643-2658 3036432658 | 1 |
| 5 | (303) 643-2865 3036432865 | 1 |
| 6 | (303) 643-3820 3036433820 | 1 |
| 7 | (303) 643-4193 3036434193 | 1 |
| 8 | (303) 643-4526 3036434526 | 1 |
| 9 | (303) 643-4860 3036434860 | 1 |
| 10 | (303) 643-6183 3036436183 | 1 |
| 11 | (303) 643-6406 3036436406 | 1 |
| 12 | (303) 643-7061 3036437061 | 1 |
| 13 | (303) 643-7395 3036437395 | 1 |
| 14 | (303) 643-8665 3036438665 | 1 |
| 15 | (303) 643-8993 3036438993 | 1 |
| 16 | (303) 643-9466 3036439466 | 1 |
| 17 | (303) 643-9670 3036439670 | 1 |
| 18 | (303) 643-9985 3036439985 | 1 |
About This Prefix
Phone numbers starting with (303) 643 are part of the North American Numbering Plan (NANP). The first three digits (303) represent the Area Code (NPA), and the next three digits (643) represent the Central Office Code (NXX) or exchange.
- NPA (303) - Numbering Plan Area, identifies the geographic region
- NXX (643) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)