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

SYVNHLSHWD prefixes in area code 501

NANPA records 13 assigned NXX blocks to rate center SYVNHLSHWD in area code 501, 2.1% of the 631 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. 7 holders hold those blocks, the largest being SOUTHWESTERN BELL (4), WINDSTREAM COMMUNICATIONS, INC. - AR (2), LEVEL 3 COMMUNICATIONS, LLC - AR (2). The earliest assignment on record here is 2002-05-06 and the most recent 2026-06-12. 11 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

13 assigned blocks – 2.1% of 501
7 holders of record
11 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
501-392 Windstream WINDSTREAM COMMUNICATIONS, INC. - AR – yes yes
501-436 Lumen LEVEL 3 COMMUNICATIONS, LLC - AR 2002-05-06 yes yes
501-487 Lumen LEVEL 3 TELECOM OF ARKANSAS, LLC - AR – yes yes
501-542 Lumen LEVEL 3 COMMUNICATIONS, LLC - AR – yes yes
501-564 IP HORIZON LLC 2024-02-16 yes yes
501-599 FRACTEL, LLC 2020-07-15 yes yes
501-608 IP HORIZON LLC 2026-06-12 yes no
501-819 AT&T SOUTHWESTERN BELL – yes yes
501-833 AT&T SOUTHWESTERN BELL – yes yes
501-834 AT&T SOUTHWESTERN BELL – no yes
501-835 AT&T SOUTHWESTERN BELL – no yes
501-864 AT&T AT&T ENTERPRISES, LLC 2006-01-19 yes yes
501-992 Windstream WINDSTREAM COMMUNICATIONS, INC. - AR – 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
SOUTHWESTERN BELL AT&T 4 30.8%
WINDSTREAM COMMUNICATIONS, INC. - AR Windstream 2 15.4%
LEVEL 3 COMMUNICATIONS, LLC - AR Lumen 2 15.4%
IP HORIZON LLC – 2 15.4%
LEVEL 3 TELECOM OF ARKANSAS, LLC - AR Lumen 1 7.7%
FRACTEL, LLC – 1 7.7%
AT&T ENTERPRISES, LLC AT&T 1 7.7%

Frequently asked

Which prefixes belong to SYVNHLSHWD in area code 501?

13 blocks: 392, 436, 487, 542, 564, 599, 608, 819, 833, 834, 835, 864 and 1 more, all listed in the table above.

Which carriers have numbers in SYVNHLSHWD?

SOUTHWESTERN BELL (4 blocks), WINDSTREAM COMMUNICATIONS, INC. - AR (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - AR (2 blocks), IP HORIZON LLC (2 blocks), LEVEL 3 TELECOM OF ARKANSAS, LLC - AR (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 SYVNHLSHWD 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 501

All 631 prefixes in 501