Phone Prefix
(650) 581-XXXX
CA • SAN MATEO
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Carrier Information
NANPA
State
CA
Region
WC
Rate Center
SAN MATEO
Assigned To
SONIC TELECOM, LLC - CA
OCN
433E
Status
AS
Date Assigned
Nov 28, 2012
Number Range
First Number
(650) 581-0000
Last Number
(650) 581-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
12 reports
12
Total FCC + FTC DNC complaints for numbers in this prefix
Top 8 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (650) 581-3763 6505813763 | 5 |
| 2 | (650) 581-0633 6505810633 | 1 |
| 3 | (650) 581-2567 6505812567 | 1 |
| 4 | (650) 581-3119 6505813119 | 1 |
| 5 | (650) 581-5798 6505815798 | 1 |
| 6 | (650) 581-8001 6505818001 | 1 |
| 7 | (650) 581-0124 6505810124 | 1 |
| 8 | (650) 581-9178 6505819178 | 1 |
About This Prefix
Phone numbers starting with (650) 581 are part of the North American Numbering Plan (NANP). The first three digits (650) represent the Area Code (NPA), and the next three digits (581) represent the Central Office Code (NXX) or exchange.
- NPA (650) - Numbering Plan Area, identifies the geographic region
- NXX (581) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)