Phone Prefix
(510) 857-XXXX
CA • FRNK MAIN
Search Number in This Prefix
Enter the last 4 digits to search for a specific number
Carrier Information
NANPA
State
CA
Region
WC
Rate Center
FRNK MAIN
Assigned To
NEW CINGULAR WIRELESS PCS, LLC
OCN
6010
Status
AS
Date Assigned
Dec 12, 2022
Number Range
First Number
(510) 857-0000
Last Number
(510) 857-9999
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 | (510) 857-1238 5108571238 | 1 |
| 2 | (510) 857-1908 5108571908 | 1 |
| 3 | (510) 857-3892 5108573892 | 1 |
| 4 | (510) 857-7833 5108577833 | 1 |
| 5 | (510) 857-8392 5108578392 | 1 |
| 6 | (510) 857-8571 5108578571 | 1 |
About This Prefix
Phone numbers starting with (510) 857 are part of the North American Numbering Plan (NANP). The first three digits (510) represent the Area Code (NPA), and the next three digits (857) represent the Central Office Code (NXX) or exchange.
- NPA (510) - Numbering Plan Area, identifies the geographic region
- NXX (857) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)