Phone Prefix
(331) 321-XXXX
IL • AURORA
Search Number in This Prefix
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Carrier Information
NANPA
State
IL
Region
MW
Rate Center
AURORA
Assigned To
T-MOBILE USA, INC.
OCN
6529
Status
AS
Date Assigned
Mar 28, 2017
Number Range
First Number
(331) 321-0000
Last Number
(331) 321-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
21 reports
21
Total FCC + FTC DNC complaints for numbers in this prefix
Top 18 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (331) 321-4112 3313214112 | 2 |
| 2 | (331) 321-7253 3313217253 | 2 |
| 3 | (331) 321-4655 3313214655 | 2 |
| 4 | (331) 321-3211 3313213211 | 1 |
| 5 | (331) 321-4284 3313214284 | 1 |
| 6 | (331) 321-4297 3313214297 | 1 |
| 7 | (331) 321-4607 3313214607 | 1 |
| 8 | (331) 321-7081 3313217081 | 1 |
| 9 | (331) 321-7297 3313217297 | 1 |
| 10 | (331) 321-7534 3313217534 | 1 |
| 11 | (331) 321-7805 3313217805 | 1 |
| 12 | (331) 321-7978 3313217978 | 1 |
| 13 | (331) 321-8326 3313218326 | 1 |
| 14 | (331) 321-8606 3313218606 | 1 |
| 15 | (331) 321-0271 3313210271 | 1 |
| 16 | (331) 321-8654 3313218654 | 1 |
| 17 | (331) 321-2386 3313212386 | 1 |
| 18 | (331) 321-2421 3313212421 | 1 |
About This Prefix
Phone numbers starting with (331) 321 are part of the North American Numbering Plan (NANP). The first three digits (331) represent the Area Code (NPA), and the next three digits (321) represent the Central Office Code (NXX) or exchange.
- NPA (331) - Numbering Plan Area, identifies the geographic region
- NXX (321) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)