Phone Prefix
(312) 545-XXXX
IL • CHICGOZN01
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Carrier Information
NANPA
State
IL
Region
MW
Rate Center
CHICGOZN01
Assigned To
T-MOBILE USA, INC.
OCN
6529
Status
AS
Date Assigned
Aug 27, 2007
Number Range
First Number
(312) 545-0000
Last Number
(312) 545-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
8 reports
8
Total FCC + FTC DNC complaints for numbers in this prefix
Top 8 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (312) 545-1138 3125451138 | 1 |
| 2 | (312) 545-3707 3125453707 | 1 |
| 3 | (312) 545-6272 3125456272 | 1 |
| 4 | (312) 545-7321 3125457321 | 1 |
| 5 | (312) 545-7599 3125457599 | 1 |
| 6 | (312) 545-7704 3125457704 | 1 |
| 7 | (312) 545-8290 3125458290 | 1 |
| 8 | (312) 545-9700 3125459700 | 1 |
About This Prefix
Phone numbers starting with (312) 545 are part of the North American Numbering Plan (NANP). The first three digits (312) represent the Area Code (NPA), and the next three digits (545) represent the Central Office Code (NXX) or exchange.
- NPA (312) - Numbering Plan Area, identifies the geographic region
- NXX (545) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)