Phone Prefix
(443) 531-XXXX
MD • BALTIMORE
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Carrier Information
NANPA
State
MD
Region
MA
Rate Center
BALTIMORE
Assigned To
NEW CINGULAR WIRELESS PCS, LLC - DC
OCN
4036
Status
AS
Date Assigned
Mar 23, 2009
Number Range
First Number
(443) 531-0000
Last Number
(443) 531-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
5 reports
5
Total FCC + FTC DNC complaints for numbers in this prefix
Top 5 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (443) 531-2287 4435312287 | 1 |
| 2 | (443) 531-3211 4435313211 | 1 |
| 3 | (443) 531-3580 4435313580 | 1 |
| 4 | (443) 531-9407 4435319407 | 1 |
| 5 | (443) 531-9639 4435319639 | 1 |
About This Prefix
Phone numbers starting with (443) 531 are part of the North American Numbering Plan (NANP). The first three digits (443) represent the Area Code (NPA), and the next three digits (531) represent the Central Office Code (NXX) or exchange.
- NPA (443) - Numbering Plan Area, identifies the geographic region
- NXX (531) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)