Phone Prefix
(312) 230-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) 230-0000
Last Number
(312) 230-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
6 reports
6
Total FCC + FTC DNC complaints for numbers in this prefix
Top 5 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (312) 230-9023 3122309023 | 2 |
| 2 | (312) 230-5296 3122305296 | 1 |
| 3 | (312) 230-5351 3122305351 | 1 |
| 4 | (312) 230-9043 3122309043 | 1 |
| 5 | (312) 230-9178 3122309178 | 1 |
About This Prefix
Phone numbers starting with (312) 230 are part of the North American Numbering Plan (NANP). The first three digits (312) represent the Area Code (NPA), and the next three digits (230) represent the Central Office Code (NXX) or exchange.
- NPA (312) - Numbering Plan Area, identifies the geographic region
- NXX (230) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)