Phone Prefix
(331) 399-XXXX
IL • DOWNERSGRV
Search Number in This Prefix
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Carrier Information
NANPA
State
IL
Region
MW
Rate Center
DOWNERSGRV
Assigned To
IP HORIZON LLC
OCN
515J
Status
AS
Date Assigned
May 19, 2021
Number Range
First Number
(331) 399-0000
Last Number
(331) 399-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
29 reports
29
Total FCC + FTC DNC complaints for numbers in this prefix
Top 26 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (331) 399-3344 3313993344 | 4 |
| 2 | (331) 399-0182 3313990182 | 1 |
| 3 | (331) 399-0234 3313990234 | 1 |
| 4 | (331) 399-0797 3313990797 | 1 |
| 5 | (331) 399-0801 3313990801 | 1 |
| 6 | (331) 399-0853 3313990853 | 1 |
| 7 | (331) 399-0874 3313990874 | 1 |
| 8 | (331) 399-0977 3313990977 | 1 |
| 9 | (331) 399-3420 3313993420 | 1 |
| 10 | (331) 399-3794 3313993794 | 1 |
| 11 | (331) 399-9034 3313999034 | 1 |
| 12 | (331) 399-9110 3313999110 | 1 |
| 13 | (331) 399-9129 3313999129 | 1 |
| 14 | (331) 399-9173 3313999173 | 1 |
| 15 | (331) 399-9325 3313999325 | 1 |
| 16 | (331) 399-9392 3313999392 | 1 |
| 17 | (331) 399-9617 3313999617 | 1 |
| 18 | (331) 399-9657 3313999657 | 1 |
| 19 | (331) 399-9665 3313999665 | 1 |
| 20 | (331) 399-9677 3313999677 | 1 |
| 21 | (331) 399-9746 3313999746 | 1 |
| 22 | (331) 399-9810 3313999810 | 1 |
| 23 | (331) 399-9831 3313999831 | 1 |
| 24 | (331) 399-9884 3313999884 | 1 |
| 25 | (331) 399-0047 3313990047 | 1 |
| 26 | (331) 399-9968 3313999968 | 1 |
About This Prefix
Phone numbers starting with (331) 399 are part of the North American Numbering Plan (NANP). The first three digits (331) represent the Area Code (NPA), and the next three digits (399) represent the Central Office Code (NXX) or exchange.
- NPA (331) - Numbering Plan Area, identifies the geographic region
- NXX (399) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)