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

STSIMONSIS prefixes in area code 912

NANPA records 9 assigned NXX blocks to rate center STSIMONSIS in area code 912, 1.2% of the 731 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. 4 holders hold those blocks, the largest being BANDWIDTH.COM CLEC, LLC - GA (4), BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (3), LEVEL 3 COMMUNICATIONS, LLC - GA (1). The earliest assignment on record here is 2004-03-15 and the most recent 2022-10-13. 7 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

9 assigned blocks – 1.2% of 912
4 holders of record
7 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
912-268 Bandwidth BANDWIDTH.COM CLEC, LLC - GA – yes yes
912-291 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 2004-03-15 yes yes
912-357 Bandwidth BANDWIDTH.COM CLEC, LLC - GA 2017-07-20 yes yes
912-434 Lumen LEVEL 3 COMMUNICATIONS, LLC - GA 2004-10-28 yes yes
912-634 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – no yes
912-638 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – no yes
912-679 Bandwidth BANDWIDTH.COM CLEC, LLC - GA 2022-10-13 yes yes
912-771 Bandwidth BANDWIDTH.COM CLEC, LLC - GA 2014-04-15 yes yes
912-955 FRACTEL, LLC 2021-04-26 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 - GA Bandwidth 4 44.4%
BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL AT&T 3 33.3%
LEVEL 3 COMMUNICATIONS, LLC - GA Lumen 1 11.1%
FRACTEL, LLC – 1 11.1%

Frequently asked

Which prefixes belong to STSIMONSIS in area code 912?

9 blocks: 268, 291, 357, 434, 634, 638, 679, 771, 955. The table above gives the holder of each.

Which carriers have numbers in STSIMONSIS?

BANDWIDTH.COM CLEC, LLC - GA (4 blocks), BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (3 blocks), LEVEL 3 COMMUNICATIONS, LLC - GA (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 STSIMONSIS 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 912

All 731 prefixes in 912