Phone Prefix
(312) 523-XXXX
IL • CHICGOZN01
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Carrier Information
NANPA
State
IL
Region
MW
Rate Center
CHICGOZN01
Assigned To
PAETEC ITEL, LLC
OCN
829J
Status
AS
Date Assigned
May 26, 2005
Number Range
First Number
(312) 523-0000
Last Number
(312) 523-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
14 reports
14
Total FCC + FTC DNC complaints for numbers in this prefix
Top 9 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (312) 523-9300 3125239300 | 6 |
| 2 | (312) 523-0260 3125230260 | 1 |
| 3 | (312) 523-0659 3125230659 | 1 |
| 4 | (312) 523-1010 3125231010 | 1 |
| 5 | (312) 523-0150 3125230150 | 1 |
| 6 | (312) 523-3737 3125233737 | 1 |
| 7 | (312) 523-6582 3125236582 | 1 |
| 8 | (312) 523-9054 3125239054 | 1 |
| 9 | (312) 523-2203 3125232203 | 1 |
About This Prefix
Phone numbers starting with (312) 523 are part of the North American Numbering Plan (NANP). The first three digits (312) represent the Area Code (NPA), and the next three digits (523) represent the Central Office Code (NXX) or exchange.
- NPA (312) - Numbering Plan Area, identifies the geographic region
- NXX (523) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)