Prefix 415-286 — San Francisco:montrose-evergreen Da, CA

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

Numbers in the 415-286 prefix are registered to the San Francisco:montrose-evergreen Da rate center in CA, inside area code 415. The prefix is the second block of a ten-digit US number (415-286-XXXX) and pins the number to a billing locality.

The assigned code holder is T-MOBILE USA, INC., operating company number 6529, assigned May 18, 2001. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.

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.

Spoofing means this prefix on your screen doesn't guarantee a San Francisco:montrose-evergreen Da caller. Verify independently before trusting a request for money or data.

Neighboring prefixes

FAQ

Where is 415-286 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 415-286 numbers?

T-MOBILE USA, INC. 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 415-286 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.