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

GAITHERSBG prefixes in area code 240

NANPA records 40 assigned NXX blocks to rate center GAITHERSBG in area code 240, 5.1% of the 785 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. 16 holders hold those blocks, the largest being PAETEC ITEL, LLC (6), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (4), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (4). The earliest assignment on record here is 2001-02-13 and the most recent 2023-02-10. 36 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 227, 301 – overlay codes cover the same geography, so a rate center is served by all of them.

40 assigned blocks – 5.1% of 240
16 holders of record
36 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
240-224 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 2012-09-10 yes yes
240-243 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
240-246 STARPOWER COMMUNICATIONS, LLC - MD – yes yes
240-252 Lumen LEVEL 3 COMMUNICATIONS, LLC - MD – yes yes
240-261 Onvoy ONVOY, LLC - MD 2015-12-23 yes yes
240-306 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
240-327 CORE COMMUNICATIONS, INC.- MD – no yes
240-361 Windstream PAETEC ITEL, LLC – yes yes
240-364 Windstream PAETEC ITEL, LLC 2001-05-09 yes yes
240-372 T-Mobile METROPCS, INC. – yes yes
240-388 T-Mobile METROPCS, INC. 2002-11-04 yes yes
240-404 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2001-02-13 yes yes
240-449 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC – yes yes
240-454 Windstream PAETEC ITEL, LLC 2005-04-22 yes yes
240-474 BALTIMORE-WASHINGTON TELEPHONE (BWT) 2015-05-22 yes yes
240-477 Windstream PAETEC ITEL, LLC 2005-05-20 yes yes
240-562 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2015-06-12 yes yes
240-597 Peerless PEERLESS NETWORK OF MARYLAND, LLC – yes yes
240-631 Verizon VERIZON MARYLAND, INC. – no yes
240-632 Verizon VERIZON MARYLAND, INC. – no yes
240-654 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2006-05-19 yes yes
240-658 Vonage VONAGE AMERICA LLC 2018-12-04 yes yes
240-683 Verizon VERIZON MARYLAND, INC. – no yes
240-686 Verizon VERIZON MARYLAND, INC. – yes yes
240-690 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - DC 2016-11-10 yes yes
240-702 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 2014-10-07 yes yes
240-720 Lumen LEVEL 3 COMMUNICATIONS, LLC - MD – yes yes
240-750 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2005-05-06 yes yes
240-751 Lumen LEVEL 3 COMMUNICATIONS, LLC - MD – yes yes
240-780 Lumen LEVEL 3 COMMUNICATIONS, LLC - MD – yes yes
240-793 T-Mobile METROPCS, INC. 2001-03-15 yes yes
240-798 Onvoy ONVOY, LLC - MD 2021-09-01 yes yes
240-801 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 2013-10-04 yes yes
240-805 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 2015-11-17 yes yes
240-813 Windstream PAETEC ITEL, LLC – yes yes
240-848 T-Mobile METROPCS, INC. – yes yes
240-912 Windstream PAETEC ITEL, LLC – yes yes
240-937 Bandwidth BANDWIDTH.COM CLEC, LLC - MD 2022-07-22 yes yes
240-981 NUSO, LLC 2023-02-10 yes yes
240-982 Onvoy ONVOY, LLC - MD 2023-01-13 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
PAETEC ITEL, LLC Windstream 6 15%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD Verizon 4 10%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 4 10%
LEVEL 3 COMMUNICATIONS, LLC - MD Lumen 4 10%
METROPCS, INC. T-Mobile 4 10%
VERIZON MARYLAND, INC. Verizon 4 10%
ONVOY, LLC - MD Onvoy 3 7.5%
NEW CINGULAR WIRELESS PCS, LLC - DC AT&T 3 7.5%
STARPOWER COMMUNICATIONS, LLC - MD – 1 2.5%
CORE COMMUNICATIONS, INC.- MD – 1 2.5%
BALTIMORE-WASHINGTON TELEPHONE (BWT) – 1 2.5%
PEERLESS NETWORK OF MARYLAND, LLC Peerless 1 2.5%
VONAGE AMERICA LLC Vonage 1 2.5%
TELEPORT COMMUNICATIONS AMERICA, LLC - DC AT&T 1 2.5%
BANDWIDTH.COM CLEC, LLC - MD Bandwidth 1 2.5%
NUSO, LLC – 1 2.5%

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 GAITHERSBG in area code 240?

40 blocks: 224, 243, 246, 252, 261, 306, 327, 361, 364, 372, 388, 404 and 28 more, all listed in the table above.

Which carriers have numbers in GAITHERSBG?

PAETEC ITEL, LLC (6 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (4 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (4 blocks), LEVEL 3 COMMUNICATIONS, LLC - MD (4 blocks), METROPCS, INC. (4 blocks), VERIZON MARYLAND, INC. (4 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is GAITHERSBG 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 240

All 785 prefixes in 240