Phone Prefix
(231) 403-XXXX
MI • WILLIAMSBG
Search Number in This Prefix
Enter the last 4 digits to search for a specific number
Carrier Information
NANPA
State
MI
Region
MW
Rate Center
WILLIAMSBG
Assigned To
ONVOY, LLCV - MI
OCN
543C
Status
AS
Date Assigned
Dec 11, 2012
Number Range
First Number
(231) 403-0000
Last Number
(231) 403-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
36 reports
36
Total FCC + FTC DNC complaints for numbers in this prefix
Top 32 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (231) 403-6669 2314036669 | 3 |
| 2 | (231) 403-4868 2314034868 | 2 |
| 3 | (231) 403-6927 2314036927 | 2 |
| 4 | (231) 403-0354 2314030354 | 1 |
| 5 | (231) 403-0626 2314030626 | 1 |
| 6 | (231) 403-1816 2314031816 | 1 |
| 7 | (231) 403-2095 2314032095 | 1 |
| 8 | (231) 403-2656 2314032656 | 1 |
| 9 | (231) 403-3105 2314033105 | 1 |
| 10 | (231) 403-4340 2314034340 | 1 |
| 11 | (231) 403-4368 2314034368 | 1 |
| 12 | (231) 403-4831 2314034831 | 1 |
| 13 | (231) 403-4907 2314034907 | 1 |
| 14 | (231) 403-5112 2314035112 | 1 |
| 15 | (231) 403-5276 2314035276 | 1 |
| 16 | (231) 403-6382 2314036382 | 1 |
| 17 | (231) 403-6518 2314036518 | 1 |
| 18 | (231) 403-6722 2314036722 | 1 |
| 19 | (231) 403-6731 2314036731 | 1 |
| 20 | (231) 403-6767 2314036767 | 1 |
| 21 | (231) 403-6780 2314036780 | 1 |
| 22 | (231) 403-6836 2314036836 | 1 |
| 23 | (231) 403-6909 2314036909 | 1 |
| 24 | (231) 403-9011 2314039011 | 1 |
| 25 | (231) 403-9231 2314039231 | 1 |
| 26 | (231) 403-9389 2314039389 | 1 |
| 27 | (231) 403-9732 2314039732 | 1 |
| 28 | (231) 403-9775 2314039775 | 1 |
| 29 | (231) 403-0075 2314030075 | 1 |
| 30 | (231) 403-9843 2314039843 | 1 |
| 31 | (231) 403-0292 2314030292 | 1 |
| 32 | (231) 403-0332 2314030332 | 1 |
About This Prefix
Phone numbers starting with (231) 403 are part of the North American Numbering Plan (NANP). The first three digits (231) represent the Area Code (NPA), and the next three digits (403) represent the Central Office Code (NXX) or exchange.
- NPA (231) - Numbering Plan Area, identifies the geographic region
- NXX (403) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)