Phone Prefix
(773) 991-XXXX
IL • CHICGOZN03
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Carrier Information
NANPA
State
IL
Region
MW
Rate Center
CHICGOZN03
Assigned To
T-MOBILE USA, INC.
OCN
6529
Status
RT
Number Range
First Number
(773) 991-0000
Last Number
(773) 991-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
12 reports
12
Total FCC + FTC DNC complaints for numbers in this prefix
Top 10 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (773) 991-9369 7739919369 | 3 |
| 2 | (773) 991-1653 7739911653 | 1 |
| 3 | (773) 991-3129 7739913129 | 1 |
| 4 | (773) 991-3593 7739913593 | 1 |
| 5 | (773) 991-6767 7739916767 | 1 |
| 6 | (773) 991-7833 7739917833 | 1 |
| 7 | (773) 991-8756 7739918756 | 1 |
| 8 | (773) 991-9305 7739919305 | 1 |
| 9 | (773) 991-1369 7739911369 | 1 |
| 10 | (773) 991-9837 7739919837 | 1 |
About This Prefix
Phone numbers starting with (773) 991 are part of the North American Numbering Plan (NANP). The first three digits (773) represent the Area Code (NPA), and the next three digits (991) represent the Central Office Code (NXX) or exchange.
- NPA (773) - Numbering Plan Area, identifies the geographic region
- NXX (991) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)