Phone Prefix
(303) 857-XXXX
CO • FORTLUPTON
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Carrier Information
NANPA
State
CO
Region
WE
Rate Center
FORTLUPTON
Assigned To
QWEST CORPORATION
OCN
9636
Status
RT
Number Range
First Number
(303) 857-0000
Last Number
(303) 857-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
23 reports
23
Total FCC + FTC DNC complaints for numbers in this prefix
Top 20 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (303) 857-5761 3038575761 | 3 |
| 2 | (303) 857-6379 3038576379 | 2 |
| 3 | (303) 857-2260 3038572260 | 1 |
| 4 | (303) 857-3558 3038573558 | 1 |
| 5 | (303) 857-3637 3038573637 | 1 |
| 6 | (303) 857-4184 3038574184 | 1 |
| 7 | (303) 857-4221 3038574221 | 1 |
| 8 | (303) 857-4915 3038574915 | 1 |
| 9 | (303) 857-5009 3038575009 | 1 |
| 10 | (303) 857-5258 3038575258 | 1 |
| 11 | (303) 857-5301 3038575301 | 1 |
| 12 | (303) 857-5399 3038575399 | 1 |
| 13 | (303) 857-5762 3038575762 | 1 |
| 14 | (303) 857-8099 3038578099 | 1 |
| 15 | (303) 857-8531 3038578531 | 1 |
| 16 | (303) 857-8791 3038578791 | 1 |
| 17 | (303) 857-9686 3038579686 | 1 |
| 18 | (303) 857-1175 3038571175 | 1 |
| 19 | (303) 857-9946 3038579946 | 1 |
| 20 | (303) 857-1347 3038571347 | 1 |
About This Prefix
Phone numbers starting with (303) 857 are part of the North American Numbering Plan (NANP). The first three digits (303) represent the Area Code (NPA), and the next three digits (857) represent the Central Office Code (NXX) or exchange.
- NPA (303) - Numbering Plan Area, identifies the geographic region
- NXX (857) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)