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

WALDORF prefixes in area code 240

NANPA records 26 assigned NXX blocks to rate center WALDORF in area code 240, 3.3% 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. 11 holders hold those blocks, the largest being CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (6), METROPCS, INC. (4), NEW CINGULAR WIRELESS PCS, LLC - DC (3). The earliest assignment on record here is 2001-01-16 and the most recent 2011-11-11. 25 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, 507 – overlay codes cover the same geography, so a rate center is served by all of them.

26 assigned blocks – 3.3% of 240
11 holders of record
25 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
240-210 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC – yes yes
240-213 Peerless PEERLESS NETWORK OF MARYLAND, LLC – yes yes
240-216 T-Mobile METROPCS, INC. 2001-03-15 yes yes
240-222 Windstream PAETEC ITEL, LLC – yes yes
240-229 Lumen LEVEL 3 COMMUNICATIONS, LLC - MD – yes yes
240-270 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 2011-11-07 yes yes
240-279 CORE COMMUNICATIONS, INC.- MD – no yes
240-299 T-Mobile METROPCS, INC. – yes yes
240-300 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 2010-12-07 yes yes
240-320 Windstream PAETEC ITEL, LLC – yes yes
240-346 T-Mobile METROPCS, INC. – yes yes
240-368 Peerless PEERLESS NETWORK OF MARYLAND, LLC – yes yes
240-412 T-Mobile METROPCS, INC. 2001-01-16 yes yes
240-416 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2001-05-18 yes yes
240-419 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 2007-10-29 yes yes
240-427 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2001-04-23 yes yes
240-435 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 2009-05-07 yes yes
240-448 Onvoy ONVOY, LLC - MD – yes yes
240-458 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 2011-10-04 yes yes
240-518 NUSO, LLC – yes yes
240-530 CORE COMMUNICATIONS, INC.- MD – yes yes
240-585 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 2011-06-29 yes yes
240-607 Lumen LEVEL 3 COMMUNICATIONS, LLC - MD – yes yes
240-640 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2009-03-24 yes yes
240-682 STARPOWER COMMUNICATIONS, LLC - MD – yes yes
240-754 Lumen LEVEL 3 COMMUNICATIONS, LLC - MD 2011-11-11 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD Verizon 6 23.1%
METROPCS, INC. T-Mobile 4 15.4%
NEW CINGULAR WIRELESS PCS, LLC - DC AT&T 3 11.5%
LEVEL 3 COMMUNICATIONS, LLC - MD Lumen 3 11.5%
PEERLESS NETWORK OF MARYLAND, LLC Peerless 2 7.7%
PAETEC ITEL, LLC Windstream 2 7.7%
CORE COMMUNICATIONS, INC.- MD – 2 7.7%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 3.8%
ONVOY, LLC - MD Onvoy 1 3.8%
NUSO, LLC – 1 3.8%
STARPOWER COMMUNICATIONS, LLC - MD – 1 3.8%

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 WALDORF in area code 240?

26 blocks: 210, 213, 216, 222, 229, 270, 279, 299, 300, 320, 346, 368 and 14 more, all listed in the table above.

Which carriers have numbers in WALDORF?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD (6 blocks), METROPCS, INC. (4 blocks), NEW CINGULAR WIRELESS PCS, LLC - DC (3 blocks), LEVEL 3 COMMUNICATIONS, LLC - MD (3 blocks), PEERLESS NETWORK OF MARYLAND, LLC (2 blocks), PAETEC ITEL, LLC (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is WALDORF 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