Phone Prefix
(858) 307-XXXX
CA • SNDG MRMS
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Carrier Information
NANPA
State
CA
Region
WC
Rate Center
SNDG MRMS
Assigned To
PACIFIC BELL
OCN
9740
Status
AS
Date Assigned
Nov 22, 2017
Number Range
First Number
(858) 307-0000
Last Number
(858) 307-9999
This prefix contains 10,000 possible phone numbers
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About This Prefix
Phone numbers starting with (858) 307 are part of the North American Numbering Plan (NANP). The first three digits (858) represent the Area Code (NPA), and the next three digits (307) represent the Central Office Code (NXX) or exchange.
- NPA (858) - Numbering Plan Area, identifies the geographic region
- NXX (307) - Central Office Code, identifies the specific exchange
- XXXX - Subscriber number (0000-9999)