Phone Prefix
(312) 743-XXXX
IL • CHICGOZN01
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Carrier Information
NANPA
State
IL
Region
MW
Rate Center
CHICGOZN01
Assigned To
ILLINOIS BELL TEL CO
OCN
9329
Status
RT
Number Range
First Number
(312) 743-0000
Last Number
(312) 743-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
10 reports
10
Total FCC + FTC DNC complaints for numbers in this prefix
Top 10 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (312) 743-0211 3127430211 | 1 |
| 2 | (312) 743-0804 3127430804 | 1 |
| 3 | (312) 743-3502 3127433502 | 1 |
| 4 | (312) 743-3915 3127433915 | 1 |
| 5 | (312) 743-4140 3127434140 | 1 |
| 6 | (312) 743-6605 3127436605 | 1 |
| 7 | (312) 743-6657 3127436657 | 1 |
| 8 | (312) 743-7954 3127437954 | 1 |
| 9 | (312) 743-8530 3127438530 | 1 |
| 10 | (312) 743-9541 3127439541 | 1 |
About This Prefix
Phone numbers starting with (312) 743 are part of the North American Numbering Plan (NANP). The first three digits (312) represent the Area Code (NPA), and the next three digits (743) represent the Central Office Code (NXX) or exchange.
- NPA (312) - Numbering Plan Area, identifies the geographic region
- NXX (743) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)