Phone Prefix
(312) 451-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
Oct 22, 2003
Number Range
First Number
(312) 451-0000
Last Number
(312) 451-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
15 reports
15
Total FCC + FTC DNC complaints for numbers in this prefix
Top 13 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (312) 451-2260 3124512260 | 3 |
| 2 | (312) 451-1727 3124511727 | 1 |
| 3 | (312) 451-2667 3124512667 | 1 |
| 4 | (312) 451-3114 3124513114 | 1 |
| 5 | (312) 451-3163 3124513163 | 1 |
| 6 | (312) 451-6128 3124516128 | 1 |
| 7 | (312) 451-6175 3124516175 | 1 |
| 8 | (312) 451-6259 3124516259 | 1 |
| 9 | (312) 451-7416 3124517416 | 1 |
| 10 | (312) 451-8021 3124518021 | 1 |
| 11 | (312) 451-9214 3124519214 | 1 |
| 12 | (312) 451-0632 3124510632 | 1 |
| 13 | (312) 451-9645 3124519645 | 1 |
About This Prefix
Phone numbers starting with (312) 451 are part of the North American Numbering Plan (NANP). The first three digits (312) represent the Area Code (NPA), and the next three digits (451) represent the Central Office Code (NXX) or exchange.
- NPA (312) - Numbering Plan Area, identifies the geographic region
- NXX (451) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)