Prefix 415-340 — San Francisco:montrose-evergreen Da, CA

NANPA CO code assignment, current as of July 28, 2026.

Area code
415
Prefix (NXX)
340
State
California
Time zone
Pacific
Code holder
BANDWIDTH.COM CLEC, LLC - CA
OCN
981E
Pooled
Yes (thousands-block pooling)
Assigned
2011-08-04
LATA
722

A phone number starting 415-340 was issued in the San Francisco:montrose-evergreen Da rate center of CA — part of area code 415.

Code-holder of record: BANDWIDTH.COM CLEC, LLC - CA (OCN 981E), assigned August 4, 2011. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 415-340 numbers may be served by different companies.

A scammer can display 415-340 without ever touching CA. When in doubt, end the call and reach the company or agency through its official website; unwanted robocalls belong in the FTC's fraud report queue.

San Francisco:montrose-evergreen Da is part of the San Francisco-Oakland-Fremont, CA Metropolitan Statistical Area. For routing purposes it sits in LATA 722. Numbers here keep Pacific time.

Neighboring prefixes

Prefixes adjacent to 415-340
PrefixRate centerCode holder
415-337 San Francisco:juniper Da PACIFIC BELL
415-338 San Francisco:juniper Da PACIFIC BELL
415-339 Sausalito PACIFIC BELL
415-341 San Francisco:central Da ASTOUND BROADBAND, LLC - CA
415-342 San Rafael NEW CINGULAR WIRELESS PCS, LLC
415-343 San Francisco:central Da MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA

FAQ

Where is 415-340 located?

The prefix is assigned to the San Francisco:montrose-evergreen Da rate center in CA, area code 415. It is part of the San Francisco-Oakland-Fremont, CA Metropolitan Statistical Area.

Which company owns 415-340 numbers?

BANDWIDTH.COM CLEC, LLC - CA holds the code, but the prefix is pooled — individual thousands-blocks can be assigned to other carriers, and numbers may be ported to any provider.

Is a call from 415-340 safe to answer?

The prefix itself says nothing about the caller. Legitimate San Francisco:montrose-evergreen Da businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.