Phone Prefix
(720) 603-XXXX
CO • DENVER
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Carrier Information
NANPA
State
CO
Region
WE
Rate Center
DENVER
Assigned To
BANDWIDTH.COM CLEC, LLC - CO
OCN
078F
Status
AS
Date Assigned
Sep 08, 2017
Number Range
First Number
(720) 603-0000
Last Number
(720) 603-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
14 reports
14
Total FCC + FTC DNC complaints for numbers in this prefix
Top 11 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (720) 603-8039 7206038039 | 3 |
| 2 | (720) 603-1287 7206031287 | 2 |
| 3 | (720) 603-1209 7206031209 | 1 |
| 4 | (720) 603-2391 7206032391 | 1 |
| 5 | (720) 603-2862 7206032862 | 1 |
| 6 | (720) 603-4143 7206034143 | 1 |
| 7 | (720) 603-6270 7206036270 | 1 |
| 8 | (720) 603-8460 7206038460 | 1 |
| 9 | (720) 603-0841 7206030841 | 1 |
| 10 | (720) 603-9474 7206039474 | 1 |
| 11 | (720) 603-1087 7206031087 | 1 |
About This Prefix
Phone numbers starting with (720) 603 are part of the North American Numbering Plan (NANP). The first three digits (720) represent the Area Code (NPA), and the next three digits (603) represent the Central Office Code (NXX) or exchange.
- NPA (720) - Numbering Plan Area, identifies the geographic region
- NXX (603) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)