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

CLEMSON prefixes in area code 864

NANPA records 16 assigned NXX blocks to rate center CLEMSON in area code 864, 2.0% 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. 7 holders hold those blocks, the largest being BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (5), PAETEC ITEL, LLC (3), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC (2). The earliest assignment on record here is 2001-09-27 and the most recent 2024-03-06. 15 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 821 – overlay codes cover the same geography, so a rate center is served by all of them.

16 assigned blocks – 2% of 864
7 holders of record
15 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
864-533 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 2018-09-04 yes yes
864-623 Windstream PAETEC ITEL, LLC – yes yes
864-624 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – yes yes
864-633 Windstream PAETEC ITEL, LLC – yes yes
864-635 Onvoy ONVOY, LLC - SC 2018-08-29 yes yes
864-643 Lumen LEVEL 3 COMMUNICATIONS, LLC - SC 2001-09-27 yes yes
864-650 AT&T NEW CINGULAR WIRELESS PCS, LLC - GA – yes yes
864-653 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – yes yes
864-654 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – no yes
864-656 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – yes yes
864-722 Windstream PAETEC ITEL, LLC 2002-02-11 yes yes
864-780 Onvoy ONVOY, LLC - SC 2021-01-06 yes yes
864-795 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 2022-04-13 yes yes
864-858 AT&T BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL – yes yes
864-925 AT&T NEW CINGULAR WIRELESS PCS, LLC - GA 2024-03-06 yes yes
864-986 T-Mobile METROPCS, INC. 2002-07-08 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
BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL AT&T 5 31.2%
PAETEC ITEL, LLC Windstream 3 18.8%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC Verizon 2 12.5%
ONVOY, LLC - SC Onvoy 2 12.5%
NEW CINGULAR WIRELESS PCS, LLC - GA AT&T 2 12.5%
LEVEL 3 COMMUNICATIONS, LLC - SC Lumen 1 6.2%
METROPCS, INC. T-Mobile 1 6.2%

Frequently asked

Which prefixes belong to CLEMSON in area code 864?

16 blocks: 533, 623, 624, 633, 635, 643, 650, 653, 654, 656, 722, 780 and 4 more, all listed in the table above.

Which carriers have numbers in CLEMSON?

BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (5 blocks), PAETEC ITEL, LLC (3 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC (2 blocks), ONVOY, LLC - SC (2 blocks), NEW CINGULAR WIRELESS PCS, LLC - GA (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - SC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CLEMSON 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