NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

SAN RAFAEL prefixes in area code 415

NANPA records 62 assigned NXX blocks to rate center SAN RAFAEL in area code 415, 7.9% of the 785 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 14 holders hold those blocks, the largest being PACIFIC BELL (29), LEVEL 3 COMMUNICATIONS, LLC - CA (6), NEW CINGULAR WIRELESS PCS, LLC (5). The earliest assignment on record here is 2001-01-25 and the most recent 2014-07-07. 39 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area code 628 – overlay codes cover the same geography, so a rate center is served by all of them.

62 assigned blocks – 7.9% of 415
14 holders of record
39 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
415-223 Onvoy ONVOY, LLC - CA – yes yes
415-226 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
415-233 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
415-250 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
415-256 AT&T PACIFIC BELL – yes yes
415-257 AT&T PACIFIC BELL – no yes
415-258 AT&T PACIFIC BELL – no yes
415-259 AT&T PACIFIC BELL – yes yes
415-261 T-Mobile METROPCS, INC. 2001-09-21 yes yes
415-295 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
415-299 T-Mobile T-MOBILE USA, INC. 2001-12-26 yes yes
415-300 AT&T NEW CINGULAR WIRELESS PCS, LLC – yes yes
415-302 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
415-306 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
415-342 AT&T NEW CINGULAR WIRELESS PCS, LLC – yes yes
415-419 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
415-444 AT&T PACIFIC BELL – yes yes
415-446 AT&T PACIFIC BELL – yes yes
415-448 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
415-450 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 2001-05-11 yes yes
415-451 AT&T PACIFIC BELL – no yes
415-453 AT&T PACIFIC BELL – no yes
415-454 AT&T PACIFIC BELL – no yes
415-455 AT&T PACIFIC BELL – yes yes
415-456 AT&T PACIFIC BELL – no yes
415-457 AT&T PACIFIC BELL – no yes
415-458 AT&T PACIFIC BELL – yes yes
415-459 AT&T PACIFIC BELL – no yes
415-460 AT&T PACIFIC BELL – yes yes
415-461 AT&T PACIFIC BELL – no yes
415-462 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
415-464 AT&T PACIFIC BELL – yes yes
415-472 AT&T PACIFIC BELL – yes yes
415-473 AT&T PACIFIC BELL – no yes
415-479 AT&T PACIFIC BELL – no yes
415-482 AT&T PACIFIC BELL – yes yes
415-485 AT&T PACIFIC BELL – no yes
415-488 AT&T PACIFIC BELL – yes yes
415-491 AT&T PACIFIC BELL – no yes
415-492 AT&T PACIFIC BELL – yes yes
415-497 AT&T NEW CINGULAR WIRELESS PCS, LLC 2001-12-26 no yes
415-499 AT&T PACIFIC BELL – yes yes
415-507 AT&T PACIFIC BELL – yes yes
415-521 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2013-02-18 yes yes
415-524 Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA – yes yes
415-526 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
415-532 Onvoy ONVOY, LLC - CA – yes yes
415-578 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
415-686 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2002-08-21 yes yes
415-717 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
415-720 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – no yes
415-721 AT&T PACIFIC BELL – no yes
415-726 T-Mobile T-MOBILE USA, INC. – yes yes
415-747 T-Mobile T-MOBILE USA, INC. – yes yes
415-755 TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS – yes yes
415-784 UTILITY TELECOM GROUP, LLC - CA – no yes
415-785 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
415-838 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
415-847 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2001-01-25 no yes
415-870 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA 2014-01-08 yes yes
415-925 AT&T PACIFIC BELL – no yes
415-991 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA 2014-07-07 yes yes

The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.

Who holds the blocks

HolderBrandBlocksShare here
PACIFIC BELL AT&T 29 46.8%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 6 9.7%
NEW CINGULAR WIRELESS PCS, LLC AT&T 5 8.1%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA Verizon 5 8.1%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 3 4.8%
T-MOBILE USA, INC. T-Mobile 3 4.8%
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS TPx 3 4.8%
ONVOY, LLC - CA Onvoy 2 3.2%
METROPCS, INC. T-Mobile 1 1.6%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA Verizon 1 1.6%
LEVEL 3 TELECOM OF CALIFORNIA, LP - CA Lumen 1 1.6%
UTILITY TELECOM GROUP, LLC - CA – 1 1.6%
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 1 1.6%
AMERICAN MESSAGING SERVICES, LLC American Messaging 1 1.6%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to SAN RAFAEL in area code 415?

62 blocks: 223, 226, 233, 250, 256, 257, 258, 259, 261, 295, 299, 300 and 50 more, all listed in the table above.

Which carriers have numbers in SAN RAFAEL?

PACIFIC BELL (29 blocks), LEVEL 3 COMMUNICATIONS, LLC - CA (6 blocks), NEW CINGULAR WIRELESS PCS, LLC (5 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (5 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (3 blocks), T-MOBILE USA, INC. (3 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is SAN RAFAEL a city?

It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.

Other rate centers in 415

All 785 prefixes in 415