Phone Prefix
(312) 777-XXXX
IL • CHICGOZN01
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Carrier Information
NANPA
State
IL
Region
MW
Rate Center
CHICGOZN01
Assigned To
TELEPORT COMMUNICATIONS AMERICA, LLC - IL
OCN
7136
Status
RT
Number Range
First Number
(312) 777-0000
Last Number
(312) 777-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
82 reports
82
Total FCC + FTC DNC complaints for numbers in this prefix
Top 16 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (312) 777-4200 3127774200 | 40 |
| 2 | (312) 777-9190 3127779190 | 27 |
| 3 | (312) 777-9485 3127779485 | 2 |
| 4 | (312) 777-3456 3127773456 | 1 |
| 5 | (312) 777-3655 3127773655 | 1 |
| 6 | (312) 777-4016 3127774016 | 1 |
| 7 | (312) 777-6081 3127776081 | 1 |
| 8 | (312) 777-8000 3127778000 | 1 |
| 9 | (312) 777-8367 3127778367 | 1 |
| 10 | (312) 777-9582 3127779582 | 1 |
| 11 | (312) 777-9629 3127779629 | 1 |
| 12 | (312) 777-9693 3127779693 | 1 |
| 13 | (312) 777-1826 3127771826 | 1 |
| 14 | (312) 777-9771 3127779771 | 1 |
| 15 | (312) 777-2177 3127772177 | 1 |
| 16 | (312) 777-2890 3127772890 | 1 |
About This Prefix
Phone numbers starting with (312) 777 are part of the North American Numbering Plan (NANP). The first three digits (312) represent the Area Code (NPA), and the next three digits (777) represent the Central Office Code (NXX) or exchange.
- NPA (312) - Numbering Plan Area, identifies the geographic region
- NXX (777) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)