Phone Prefix
(773) 556-XXXX
IL • CHICGOZN03
Search Number in This Prefix
Enter the last 4 digits to search for a specific number
Carrier Information
NANPA
State
IL
Region
MW
Rate Center
CHICGOZN03
Assigned To
T-MOBILE USA, INC.
OCN
6529
Status
AS
Date Assigned
Jan 17, 2011
Number Range
First Number
(773) 556-0000
Last Number
(773) 556-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
6 reports
6
Total FCC + FTC DNC complaints for numbers in this prefix
Top 6 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (773) 556-1479 7735561479 | 1 |
| 2 | (773) 556-3378 7735563378 | 1 |
| 3 | (773) 556-6091 7735566091 | 1 |
| 4 | (773) 556-6451 7735566451 | 1 |
| 5 | (773) 556-7620 7735567620 | 1 |
| 6 | (773) 556-9820 7735569820 | 1 |
About This Prefix
Phone numbers starting with (773) 556 are part of the North American Numbering Plan (NANP). The first three digits (773) represent the Area Code (NPA), and the next three digits (556) represent the Central Office Code (NXX) or exchange.
- NPA (773) - Numbering Plan Area, identifies the geographic region
- NXX (556) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)