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

PIKESVILLE prefixes in area code 667

NANPA records 24 assigned NXX blocks to rate center PIKESVILLE in area code 667, 5.3% 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. 10 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - DC (15), CSC WIRELESS, LLC (1), NUSO, LLC (1). The earliest assignment on record here is 2013-05-10 and the most recent 2026-03-18. 24 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 – overlay codes cover the same geography, so a rate center is served by all of them.

24 assigned blocks – 5.3% of 667
10 holders of record
24 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
667-273 CSC WIRELESS, LLC 2019-10-09 yes yes
667-305 NUSO, LLC 2013-05-10 yes yes
667-313 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 2015-12-16 yes yes
667-429 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2023-02-13 yes yes
667-430 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2023-04-05 yes yes
667-439 T-Mobile OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 2023-07-20 yes yes
667-460 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2023-11-28 yes yes
667-471 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2024-03-14 yes yes
667-490 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2024-06-27 yes yes
667-491 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2024-09-03 yes yes
667-499 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2024-12-02 yes yes
667-505 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2025-02-20 yes yes
667-510 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2025-05-15 yes yes
667-512 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2025-05-15 yes yes
667-521 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2025-07-10 yes yes
667-533 WAVENATION, LLC 2025-11-26 yes yes
667-540 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2026-03-03 yes yes
667-543 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2026-03-18 yes yes
667-544 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2026-03-18 yes yes
667-596 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2024-11-06 yes yes
667-622 TON80 COMMUNICATIONS, LLC 2022-03-23 yes yes
667-667 Onvoy ONVOY, LLC - MD 2025-08-20 yes yes
667-755 QUANTUM TELECOMMUNICATIONS, INC. - MD 2021-09-29 yes yes
667-877 COMMIO, LLC 2022-09-15 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
NEW CINGULAR WIRELESS PCS, LLC - DC AT&T 15 62.5%
CSC WIRELESS, LLC – 1 4.2%
NUSO, LLC – 1 4.2%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD Verizon 1 4.2%
OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC T-Mobile 1 4.2%
WAVENATION, LLC – 1 4.2%
TON80 COMMUNICATIONS, LLC – 1 4.2%
ONVOY, LLC - MD Onvoy 1 4.2%
QUANTUM TELECOMMUNICATIONS, INC. - MD – 1 4.2%
COMMIO, LLC – 1 4.2%

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 PIKESVILLE in area code 667?

24 blocks: 273, 305, 313, 429, 430, 439, 460, 471, 490, 491, 499, 505 and 12 more, all listed in the table above.

Which carriers have numbers in PIKESVILLE?

NEW CINGULAR WIRELESS PCS, LLC - DC (15 blocks), CSC WIRELESS, LLC (1 block), NUSO, LLC (1 block), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (1 block), OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (1 block), WAVENATION, 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 PIKESVILLE 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