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

SALISBURY prefixes in area code 667

NANPA records 23 assigned NXX blocks to rate center SALISBURY in area code 667, 5.1% of the 454 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. 21 holders hold those blocks, the largest being NUSO, LLC (2), ONVOY, LLC - MD (2), TELNYX LLC (1). The earliest assignment on record here is 2012-05-23 and the most recent 2026-03-27. 23 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 410, 443, 603, 660 – overlay codes cover the same geography, so a rate center is served by all of them.

23 assigned blocks – 5.1% of 667
21 holders of record
23 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
667-221 Telnyx TELNYX LLC 2017-06-14 yes yes
667-227 ATLANTECH ONLINE, INC. - MD 2017-09-15 yes yes
667-235 Vonage VONAGE AMERICA LLC 2018-06-01 yes yes
667-252 Charter ONVOY SPECTRUM, LLC 2018-06-19 yes yes
667-253 NUSO, LLC 2013-03-11 yes yes
667-266 COMMIO, LLC 2017-06-20 yes yes
667-271 EXIANT COMMUNICATIONS LLC 2019-09-03 yes yes
667-281 Peerless PEERLESS NETWORK OF MARYLAND, LLC 2016-05-25 yes yes
667-286 HD CARRIER LLC 2020-08-12 yes yes
667-292 IP HORIZON LLC 2020-09-09 yes yes
667-330 Windstream PAETEC ITEL, LLC 2012-05-23 yes yes
667-346 CSC WIRELESS, LLC 2019-10-15 yes yes
667-384 Dish BOOST SUBSCRIBERCO L.L.C. 2021-12-10 yes yes
667-428 NUSO, LLC 2023-02-10 yes yes
667-488 CALLWORKS CORPORATION 2024-05-20 yes yes
667-496 LEAP TELECOM, LLC 2024-11-06 yes yes
667-524 Bandwidth BANDWIDTH.COM CLEC, LLC - MD 2025-08-12 yes yes
667-534 WAVENATION, LLC 2025-11-26 yes yes
667-738 OPENTACT INC. 2026-03-27 yes yes
667-800 Onvoy ONVOY, LLC - MD 2016-08-16 yes yes
667-810 Onvoy ONVOY, LLC - MD 2021-03-03 yes yes
667-855 TERRA NOVA TELECOM INC. 2019-02-22 yes yes
667-977 FRACTEL, LLC 2020-07-02 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
NUSO, LLC – 2 8.7%
ONVOY, LLC - MD Onvoy 2 8.7%
TELNYX LLC Telnyx 1 4.3%
ATLANTECH ONLINE, INC. - MD – 1 4.3%
VONAGE AMERICA LLC Vonage 1 4.3%
ONVOY SPECTRUM, LLC Charter 1 4.3%
COMMIO, LLC – 1 4.3%
EXIANT COMMUNICATIONS LLC – 1 4.3%
PEERLESS NETWORK OF MARYLAND, LLC Peerless 1 4.3%
HD CARRIER LLC – 1 4.3%
IP HORIZON LLC – 1 4.3%
PAETEC ITEL, LLC Windstream 1 4.3%
CSC WIRELESS, LLC – 1 4.3%
BOOST SUBSCRIBERCO L.L.C. Dish 1 4.3%
CALLWORKS CORPORATION – 1 4.3%
LEAP TELECOM, LLC – 1 4.3%
BANDWIDTH.COM CLEC, LLC - MD Bandwidth 1 4.3%
WAVENATION, LLC – 1 4.3%
OPENTACT INC. – 1 4.3%
TERRA NOVA TELECOM INC. – 1 4.3%
FRACTEL, LLC – 1 4.3%

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 SALISBURY in area code 667?

23 blocks: 221, 227, 235, 252, 253, 266, 271, 281, 286, 292, 330, 346 and 11 more, all listed in the table above.

Which carriers have numbers in SALISBURY?

NUSO, LLC (2 blocks), ONVOY, LLC - MD (2 blocks), TELNYX LLC (1 block), ATLANTECH ONLINE, INC. - MD (1 block), VONAGE AMERICA 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 SALISBURY 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 667

All 454 prefixes in 667