Phone Prefix
(312) 617-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
RT
Number Range
First Number
(312) 617-0000
Last Number
(312) 617-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
7 reports
7
Total FCC + FTC DNC complaints for numbers in this prefix
Top 7 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (312) 617-0363 3126170363 | 1 |
| 2 | (312) 617-2172 3126172172 | 1 |
| 3 | (312) 617-6705 3126176705 | 1 |
| 4 | (312) 617-6925 3126176925 | 1 |
| 5 | (312) 617-7528 3126177528 | 1 |
| 6 | (312) 617-8191 3126178191 | 1 |
| 7 | (312) 617-9043 3126179043 | 1 |
About This Prefix
Phone numbers starting with (312) 617 are part of the North American Numbering Plan (NANP). The first three digits (312) represent the Area Code (NPA), and the next three digits (617) represent the Central Office Code (NXX) or exchange.
- NPA (312) - Numbering Plan Area, identifies the geographic region
- NXX (617) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)