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

STNSN-BLNS prefixes in area code 628

NANPA records 3 assigned NXX blocks to rate center STNSN-BLNS in area code 628, 1.6% of the 193 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. 3 holders hold those blocks, the largest being ONVOY, LLC - CA (1), PEERLESS NETWORK OF CALIFORNIA, LLC - CA (1), FRACTEL, LLC (1). The earliest assignment on record here is 2016-06-27 and the most recent 2020-07-10. 3 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 415 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 1.6% of 628
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
628-203 Onvoy ONVOY, LLC - CA 2016-06-27 yes yes
628-561 Peerless PEERLESS NETWORK OF CALIFORNIA, LLC - CA 2018-02-15 yes yes
628-766 FRACTEL, LLC 2020-07-10 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
ONVOY, LLC - CA Onvoy 1 33.3%
PEERLESS NETWORK OF CALIFORNIA, LLC - CA Peerless 1 33.3%
FRACTEL, LLC – 1 33.3%

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 628?

3 blocks: 203, 561, 766. The table above gives the holder of each.

Which carriers have numbers in STNSN-BLNS?

ONVOY, LLC - CA (1 block), PEERLESS NETWORK OF CALIFORNIA, LLC - CA (1 block), FRACTEL, LLC (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 628

All 193 prefixes in 628