Phone Prefix
(312) 997-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) 997-0000
Last Number
(312) 997-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
18 reports
18
Total FCC + FTC DNC complaints for numbers in this prefix
Top 18 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (312) 997-0050 3129970050 | 1 |
| 2 | (312) 997-0192 3129970192 | 1 |
| 3 | (312) 997-0238 3129970238 | 1 |
| 4 | (312) 997-0981 3129970981 | 1 |
| 5 | (312) 997-1224 3129971224 | 1 |
| 6 | (312) 997-1473 3129971473 | 1 |
| 7 | (312) 997-2663 3129972663 | 1 |
| 8 | (312) 997-2812 3129972812 | 1 |
| 9 | (312) 997-4398 3129974398 | 1 |
| 10 | (312) 997-4582 3129974582 | 1 |
| 11 | (312) 997-4626 3129974626 | 1 |
| 12 | (312) 997-5474 3129975474 | 1 |
| 13 | (312) 997-5684 3129975684 | 1 |
| 14 | (312) 997-5765 3129975765 | 1 |
| 15 | (312) 997-5821 3129975821 | 1 |
| 16 | (312) 997-6134 3129976134 | 1 |
| 17 | (312) 997-6914 3129976914 | 1 |
| 18 | (312) 997-8566 3129978566 | 1 |
About This Prefix
Phone numbers starting with (312) 997 are part of the North American Numbering Plan (NANP). The first three digits (312) represent the Area Code (NPA), and the next three digits (997) represent the Central Office Code (NXX) or exchange.
- NPA (312) - Numbering Plan Area, identifies the geographic region
- NXX (997) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)