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

STNSN-BLNS prefixes in area code 415

NANPA records 8 assigned NXX blocks to rate center STNSN-BLNS in area code 415, 1.0% 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. 5 holders hold those blocks, the largest being BANDWIDTH.COM CLEC, LLC - CA (3), ONVOY, LLC - CA (2), TELEPORT COMMUNICATIONS AMERICA, LLC - CA (1). The earliest assignment on record here is 2014-08-11 and the most recent 2014-08-11. 8 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.

8 assigned blocks – 1% of 415
5 holders of record
8 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
415-484 Bandwidth BANDWIDTH.COM CLEC, LLC - CA – yes yes
415-534 Onvoy ONVOY, LLC - CA – yes yes
415-779 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
415-862 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
415-868 AT&T PACIFIC BELL – yes yes
415-943 Bandwidth BANDWIDTH.COM CLEC, LLC - CA 2014-08-11 yes yes
415-952 Bandwidth BANDWIDTH.COM CLEC, LLC - CA – yes yes
415-965 Onvoy ONVOY, LLC - CA – 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
BANDWIDTH.COM CLEC, LLC - CA Bandwidth 3 37.5%
ONVOY, LLC - CA Onvoy 2 25%
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 1 12.5%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 12.5%
PACIFIC BELL AT&T 1 12.5%

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 STNSN-BLNS in area code 415?

8 blocks: 484, 534, 779, 862, 868, 943, 952, 965. The table above gives the holder of each.

Which carriers have numbers in STNSN-BLNS?

BANDWIDTH.COM CLEC, LLC - CA (3 blocks), ONVOY, LLC - CA (2 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - CA (1 block), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (1 block), PACIFIC BELL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is STNSN-BLNS 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