Phone Prefix
(303) 558-XXXX
CO • DENVER
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Carrier Information
NANPA
State
CO
Region
WE
Rate Center
DENVER
Assigned To
COMCAST IP PHONE, LLC
OCN
318J
Status
AS
Date Assigned
Aug 13, 2009
Number Range
First Number
(303) 558-0000
Last Number
(303) 558-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
58 reports
58
Total FCC + FTC DNC complaints for numbers in this prefix
Top 36 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (303) 558-1510 3035581510 | 7 |
| 2 | (303) 558-1485 3035581485 | 7 |
| 3 | (303) 558-6903 3035586903 | 4 |
| 4 | (303) 558-5225 3035585225 | 3 |
| 5 | (303) 558-2145 3035582145 | 3 |
| 6 | (303) 558-5463 3035585463 | 2 |
| 7 | (303) 558-1713 3035581713 | 2 |
| 8 | (303) 558-4351 3035584351 | 2 |
| 9 | (303) 558-1731 3035581731 | 1 |
| 10 | (303) 558-2076 3035582076 | 1 |
| 11 | (303) 558-2151 3035582151 | 1 |
| 12 | (303) 558-3203 3035583203 | 1 |
| 13 | (303) 558-3477 3035583477 | 1 |
| 14 | (303) 558-4394 3035584394 | 1 |
| 15 | (303) 558-4992 3035584992 | 1 |
| 16 | (303) 558-5758 3035585758 | 1 |
| 17 | (303) 558-5781 3035585781 | 1 |
| 18 | (303) 558-6378 3035586378 | 1 |
| 19 | (303) 558-6388 3035586388 | 1 |
| 20 | (303) 558-6469 3035586469 | 1 |
| 21 | (303) 558-6967 3035586967 | 1 |
| 22 | (303) 558-8136 3035588136 | 1 |
| 23 | (303) 558-8519 3035588519 | 1 |
| 24 | (303) 558-8547 3035588547 | 1 |
| 25 | (303) 558-8621 3035588621 | 1 |
| 26 | (303) 558-8698 3035588698 | 1 |
| 27 | (303) 558-8743 3035588743 | 1 |
| 28 | (303) 558-0158 3035580158 | 1 |
| 29 | (303) 558-9398 3035589398 | 1 |
| 30 | (303) 558-0217 3035580217 | 1 |
| 31 | (303) 558-0269 3035580269 | 1 |
| 32 | (303) 558-0557 3035580557 | 1 |
| 33 | (303) 558-1069 3035581069 | 1 |
| 34 | (303) 558-1284 3035581284 | 1 |
| 35 | (303) 558-1570 3035581570 | 1 |
| 36 | (303) 558-1585 3035581585 | 1 |
About This Prefix
Phone numbers starting with (303) 558 are part of the North American Numbering Plan (NANP). The first three digits (303) represent the Area Code (NPA), and the next three digits (558) represent the Central Office Code (NXX) or exchange.
- NPA (303) - Numbering Plan Area, identifies the geographic region
- NXX (558) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)