Phone Prefix
(510) 307-XXXX
CA • RICHMOND
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Carrier Information
NANPA
State
CA
Region
WC
Rate Center
RICHMOND
Assigned To
PACIFIC BELL
OCN
9740
Status
RT
Number Range
First Number
(510) 307-0000
Last Number
(510) 307-9999
This prefix contains 10,000 possible phone numbers
Spam Reports
17 reports
17
Total FCC + FTC DNC complaints for numbers in this prefix
Top 9 Most Reported Numbers
| # | Phone Number | Reports |
|---|---|---|
| 1 | (510) 307-1555 5103071555 | 7 |
| 2 | (510) 307-1500 5103071500 | 3 |
| 3 | (510) 307-1648 5103071648 | 1 |
| 4 | (510) 307-2274 5103072274 | 1 |
| 5 | (510) 307-2909 5103072909 | 1 |
| 6 | (510) 307-5190 5103075190 | 1 |
| 7 | (510) 307-1013 5103071013 | 1 |
| 8 | (510) 307-6153 5103076153 | 1 |
| 9 | (510) 307-1180 5103071180 | 1 |
About This Prefix
Phone numbers starting with (510) 307 are part of the North American Numbering Plan (NANP). The first three digits (510) represent the Area Code (NPA), and the next three digits (307) represent the Central Office Code (NXX) or exchange.
- NPA (510) - Numbering Plan Area, identifies the geographic region
- NXX (307) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)