Phone Prefix
(925) 603-XXXX
CA • CONCORD
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Carrier Information
NANPA
State
CA
Region
WC
Rate Center
CONCORD
Assigned To
PACIFIC BELL
OCN
9740
Status
RT
Number Range
First Number
(925) 603-0000
Last Number
(925) 603-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
16 reports
16
Total FCC + FTC DNC complaints for numbers in this prefix
Top 14 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (925) 603-3363 9256033363 | 3 |
| 2 | (925) 603-1385 9256031385 | 1 |
| 3 | (925) 603-2616 9256032616 | 1 |
| 4 | (925) 603-3103 9256033103 | 1 |
| 5 | (925) 603-5017 9256035017 | 1 |
| 6 | (925) 603-5096 9256035096 | 1 |
| 7 | (925) 603-5170 9256035170 | 1 |
| 8 | (925) 603-5927 9256035927 | 1 |
| 9 | (925) 603-7548 9256037548 | 1 |
| 10 | (925) 603-8000 9256038000 | 1 |
| 11 | (925) 603-8180 9256038180 | 1 |
| 12 | (925) 603-9645 9256039645 | 1 |
| 13 | (925) 603-1289 9256031289 | 1 |
| 14 | (925) 603-9749 9256039749 | 1 |
About This Prefix
Phone numbers starting with (925) 603 are part of the North American Numbering Plan (NANP). The first three digits (925) represent the Area Code (NPA), and the next three digits (603) represent the Central Office Code (NXX) or exchange.
- NPA (925) - Numbering Plan Area, identifies the geographic region
- NXX (603) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)