Phone Prefix
(331) 221-XXXX
IL • ELMHURST
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Carrier Information
NANPA
State
IL
Region
MW
Rate Center
ELMHURST
Assigned To
ILLINOIS BELL TEL CO
OCN
9329
Status
AS
Date Assigned
Jan 22, 2009
Number Range
First Number
(331) 221-0000
Last Number
(331) 221-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
3 reports
3
Total FCC + FTC DNC complaints for numbers in this prefix
Top 3 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (331) 221-1000 3312211000 | 1 |
| 2 | (331) 221-3831 3312213831 | 1 |
| 3 | (331) 221-4270 3312214270 | 1 |
About This Prefix
Phone numbers starting with (331) 221 are part of the North American Numbering Plan (NANP). The first three digits (331) represent the Area Code (NPA), and the next three digits (221) represent the Central Office Code (NXX) or exchange.
- NPA (331) - Numbering Plan Area, identifies the geographic region
- NXX (221) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)