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

TRIANGLE prefixes in area code 571

NANPA records 15 assigned NXX blocks to rate center TRIANGLE in area code 571, 2.3% of the 639 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. 10 holders hold those blocks, the largest being OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (3), METROPCS, INC. (2), CORETEL VIRGINIA, LLC - VA (2). The earliest assignment on record here is 2006-01-26 and the most recent 2025-03-14. 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 703 – overlay codes cover the same geography, so a rate center is served by all of them.

15 assigned blocks – 2.3% of 571
10 holders of record
15 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
571-254 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - DC 2011-12-05 yes yes
571-320 T-Mobile OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 2016-04-04 yes yes
571-394 T-Mobile METROPCS, INC. 2018-07-05 yes yes
571-406 CORETEL VIRGINIA, LLC - VA 2006-01-26 yes yes
571-456 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2020-03-09 yes yes
571-466 T-Mobile METROPCS, INC. 2015-08-25 yes yes
571-494 Verizon VERIZON SOUTH, INC. - VA (CONTEL) 2009-12-22 yes yes
571-516 T-Mobile OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 2021-10-27 yes yes
571-625 Bandwidth BANDWIDTH.COM CLEC, LLC - VA 2025-03-14 yes yes
571-626 TON80 COMMUNICATIONS, LLC 2022-03-04 yes yes
571-656 T-Mobile OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 2023-08-31 yes yes
571-660 Onvoy ONVOY, LLC - VA 2017-03-14 yes yes
571-697 CORETEL VIRGINIA, LLC - VA 2019-03-11 yes yes
571-774 Onvoy ONVOY, LLC - VA 2021-02-08 yes yes
571-931 Windstream PAETEC ITEL, LLC – 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
OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC T-Mobile 3 20%
METROPCS, INC. T-Mobile 2 13.3%
CORETEL VIRGINIA, LLC - VA – 2 13.3%
ONVOY, LLC - VA Onvoy 2 13.3%
TELEPORT COMMUNICATIONS AMERICA, LLC - DC AT&T 1 6.7%
NEW CINGULAR WIRELESS PCS, LLC - DC AT&T 1 6.7%
VERIZON SOUTH, INC. - VA (CONTEL) Verizon 1 6.7%
BANDWIDTH.COM CLEC, LLC - VA Bandwidth 1 6.7%
TON80 COMMUNICATIONS, LLC – 1 6.7%
PAETEC ITEL, LLC Windstream 1 6.7%

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 TRIANGLE in area code 571?

15 blocks: 254, 320, 394, 406, 456, 466, 494, 516, 625, 626, 656, 660 and 3 more, all listed in the table above.

Which carriers have numbers in TRIANGLE?

OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (3 blocks), METROPCS, INC. (2 blocks), CORETEL VIRGINIA, LLC - VA (2 blocks), ONVOY, LLC - VA (2 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - DC (1 block), NEW CINGULAR WIRELESS PCS, LLC - DC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is TRIANGLE 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 571

All 639 prefixes in 571