Phone Prefix
(707) 603-XXXX
CA • NAPA
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Carrier Information
NANPA
State
CA
Region
WC
Rate Center
NAPA
Assigned To
TERRA NOVA TELECOM INC.
OCN
145J
Status
AS
Date Assigned
Mar 11, 2025
Number Range
First Number
(707) 603-0000
Last Number
(707) 603-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
6 reports
6
Total FCC + FTC DNC complaints for numbers in this prefix
Top 5 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (707) 603-9644 7076039644 | 2 |
| 2 | (707) 603-0243 7076030243 | 1 |
| 3 | (707) 603-1982 7076031982 | 1 |
| 4 | (707) 603-4201 7076034201 | 1 |
| 5 | (707) 603-8654 7076038654 | 1 |
About This Prefix
Phone numbers starting with (707) 603 are part of the North American Numbering Plan (NANP). The first three digits (707) represent the Area Code (NPA), and the next three digits (603) represent the Central Office Code (NXX) or exchange.
- NPA (707) - Numbering Plan Area, identifies the geographic region
- NXX (603) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)