Phone Prefix
(303) 563-XXXX
CO • DENVER
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Carrier Information
NANPA
State
CO
Region
WE
Rate Center
DENVER
Assigned To
LEVEL 3 COMMUNICATIONS, LLC - CO
OCN
6118
Status
RT
Number Range
First Number
(303) 563-0000
Last Number
(303) 563-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
11 reports
11
Total FCC + FTC DNC complaints for numbers in this prefix
Top 10 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (303) 563-2194 3035632194 | 2 |
| 2 | (303) 563-5051 3035635051 | 1 |
| 3 | (303) 563-5672 3035635672 | 1 |
| 4 | (303) 563-5834 3035635834 | 1 |
| 5 | (303) 563-5842 3035635842 | 1 |
| 6 | (303) 563-6250 3035636250 | 1 |
| 7 | (303) 563-6892 3035636892 | 1 |
| 8 | (303) 563-7064 3035637064 | 1 |
| 9 | (303) 563-0765 3035630765 | 1 |
| 10 | (303) 563-9896 3035639896 | 1 |
About This Prefix
Phone numbers starting with (303) 563 are part of the North American Numbering Plan (NANP). The first three digits (303) represent the Area Code (NPA), and the next three digits (563) represent the Central Office Code (NXX) or exchange.
- NPA (303) - Numbering Plan Area, identifies the geographic region
- NXX (563) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)