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

WESTMINSTR prefixes in area code 864

NANPA records 6 assigned NXX blocks to rate center WESTMINSTR in area code 864, 0.8% of the 784 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. 6 holders hold those blocks, the largest being BANDWIDTH.COM CLEC, LLC - SC (1), LEVEL 3 COMMUNICATIONS, LLC - SC (1), BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (1). The earliest assignment on record here is 2004-06-30 and the most recent 2024-11-07. 5 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 codes 351, 410, 419, 443 – overlay codes cover the same geography, so a rate center is served by all of them.

6 assigned blocks – 0.8% of 864
6 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
864-571 Bandwidth BANDWIDTH.COM CLEC, LLC - SC 2014-05-22 yes yes
864-613 Lumen LEVEL 3 COMMUNICATIONS, LLC - SC 2004-06-30 yes yes
864-647 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – no yes
864-648 Windstream PAETEC ITEL, LLC – yes yes
864-842 FRACTEL, LLC 2020-05-07 yes yes
864-931 Charter ONVOY SPECTRUM, LLC 2024-11-07 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
BANDWIDTH.COM CLEC, LLC - SC Bandwidth 1 16.7%
LEVEL 3 COMMUNICATIONS, LLC - SC Lumen 1 16.7%
BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL AT&T 1 16.7%
PAETEC ITEL, LLC Windstream 1 16.7%
FRACTEL, LLC – 1 16.7%
ONVOY SPECTRUM, LLC Charter 1 16.7%

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 WESTMINSTR in area code 864?

6 blocks: 571, 613, 647, 648, 842, 931. The table above gives the holder of each.

Which carriers have numbers in WESTMINSTR?

BANDWIDTH.COM CLEC, LLC - SC (1 block), LEVEL 3 COMMUNICATIONS, LLC - SC (1 block), BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (1 block), PAETEC ITEL, LLC (1 block), FRACTEL, LLC (1 block), ONVOY SPECTRUM, 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 WESTMINSTR 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 864

All 784 prefixes in 864