Phone Prefix
(203) 503-XXXX
CT • NEW HAVEN
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Carrier Information
NANPA
State
CT
Region
NE
Rate Center
NEW HAVEN
Assigned To
SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT
OCN
9147
Status
RT
Number Range
First Number
(203) 503-0000
Last Number
(203) 503-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
9 reports
9
Total FCC + FTC DNC complaints for numbers in this prefix
Top 9 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (203) 503-3028 2035033028 | 1 |
| 2 | (203) 503-6139 2035036139 | 1 |
| 3 | (203) 503-6885 2035036885 | 1 |
| 4 | (203) 503-6959 2035036959 | 1 |
| 5 | (203) 503-6975 2035036975 | 1 |
| 6 | (203) 503-7572 2035037572 | 1 |
| 7 | (203) 503-7701 2035037701 | 1 |
| 8 | (203) 503-8875 2035038875 | 1 |
| 9 | (203) 503-9194 2035039194 | 1 |
About This Prefix
Phone numbers starting with (203) 503 are part of the North American Numbering Plan (NANP). The first three digits (203) represent the Area Code (NPA), and the next three digits (503) represent the Central Office Code (NXX) or exchange.
- NPA (203) - Numbering Plan Area, identifies the geographic region
- NXX (503) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)