Prefix 415-604 — San Francisco:juniper Da, CA

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

Area code
415
Prefix (NXX)
604
State
California
Time zone
Pacific
Code holder
BANDWIDTH.COM CLEC, LLC - CA
OCN
981E
Pooled
Yes (thousands-block pooling)
Assigned
2015-01-23
LATA
722

415-604 identifies a block of numbers in San Francisco:juniper Da, CA, within the 415 area code. Every US prefix is tied to exactly one rate center; this one is San Francisco:juniper Da.

The rate center lies in the San Francisco-Oakland-Fremont, CA Metropolitan Statistical Area. The serving LATA is 722. Local time follows the Pacific zone.

Treat the on-screen number as a hint, not evidence — 415-604 can be spoofed like any US prefix. If a call feels off, verify through an official callback number and file a complaint with the FCC or FTC.

Code-holder of record: BANDWIDTH.COM CLEC, LLC - CA (OCN 981E), assigned January 23, 2015. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 415-604 numbers may be served by different companies.

Neighboring prefixes

Prefixes adjacent to 415-604
PrefixRate centerCode holder
415-601 San Francisco:central Da NEW CINGULAR WIRELESS PCS, LLC
415-602 San Francisco:central Da NEW CINGULAR WIRELESS PCS, LLC
415-603 San Francisco:central Da MCIMETRO ACCESS TRANSMISSION SERVICES LLC
415-605 San Francisco:central Da IP HORIZON LLC
415-606 San Francisco:central Da NEW CINGULAR WIRELESS PCS, LLC
415-607 San Francisco:central Da SPOK, INC.

FAQ

Where is 415-604 located?

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

Which company owns 415-604 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 415-604 safe to answer?

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