Phone Prefix
(840) 666-XXXX
CA • FONTANA
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Carrier Information
NANPA
State
CA
Region
WC
Rate Center
FONTANA
Assigned To
NEW CINGULAR WIRELESS PCS, LLC
OCN
6010
Status
AS
Date Assigned
Mar 09, 2021
Number Range
First Number
(840) 666-0000
Last Number
(840) 666-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
10 reports
10
Total FCC + FTC DNC complaints for numbers in this prefix
Top 10 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (840) 666-0440 8406660440 | 1 |
| 2 | (840) 666-0705 8406660705 | 1 |
| 3 | (840) 666-1298 8406661298 | 1 |
| 4 | (840) 666-5371 8406665371 | 1 |
| 5 | (840) 666-5469 8406665469 | 1 |
| 6 | (840) 666-6228 8406666228 | 1 |
| 7 | (840) 666-6241 8406666241 | 1 |
| 8 | (840) 666-6452 8406666452 | 1 |
| 9 | (840) 666-6847 8406666847 | 1 |
| 10 | (840) 666-7304 8406667304 | 1 |
About This Prefix
Phone numbers starting with (840) 666 are part of the North American Numbering Plan (NANP). The first three digits (840) represent the Area Code (NPA), and the next three digits (666) represent the Central Office Code (NXX) or exchange.
- NPA (840) - Numbering Plan Area, identifies the geographic region
- NXX (666) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)