Phone Prefix
(831) 307-XXXX
CA • CASTROVL
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Carrier Information
NANPA
State
CA
Region
WC
Rate Center
CASTROVL
Assigned To
LEVEL 3 COMMUNICATIONS, LLC - CA
OCN
8826
Status
RT
Number Range
First Number
(831) 307-0000
Last Number
(831) 307-9999
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 | (831) 307-0238 8313070238 | 1 |
| 2 | (831) 307-0239 8313070239 | 1 |
| 3 | (831) 307-0249 8313070249 | 1 |
| 4 | (831) 307-2224 8313072224 | 1 |
| 5 | (831) 307-2450 8313072450 | 1 |
| 6 | (831) 307-2489 8313072489 | 1 |
| 7 | (831) 307-2567 8313072567 | 1 |
| 8 | (831) 307-2570 8313072570 | 1 |
| 9 | (831) 307-2606 8313072606 | 1 |
| 10 | (831) 307-2756 8313072756 | 1 |
About This Prefix
Phone numbers starting with (831) 307 are part of the North American Numbering Plan (NANP). The first three digits (831) represent the Area Code (NPA), and the next three digits (307) represent the Central Office Code (NXX) or exchange.
- NPA (831) - Numbering Plan Area, identifies the geographic region
- NXX (307) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)