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

LA PLATA prefixes in area code 240

NANPA records 8 assigned NXX blocks to rate center LA PLATA in area code 240, 1.0% 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. 7 holders hold those blocks, the largest being PEERLESS NETWORK OF MARYLAND, LLC (2), ONVOY, LLC - MD (1), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (1). The earliest assignment on record here is 2001-02-13 and the most recent 2022-08-25. 8 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 301, 660 – overlay codes cover the same geography, so a rate center is served by all of them.

8 assigned blocks – 1% of 240
7 holders of record
8 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
240-208 Peerless PEERLESS NETWORK OF MARYLAND, LLC – yes yes
240-349 Onvoy ONVOY, LLC - MD – yes yes
240-352 Peerless PEERLESS NETWORK OF MARYLAND, LLC – yes yes
240-523 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2001-02-13 yes yes
240-622 CORE COMMUNICATIONS, INC.- MD 2018-06-11 yes yes
240-776 Lumen LEVEL 3 COMMUNICATIONS, LLC - MD – yes yes
240-901 Lumen CENTURYLINK COMMUNICATIONS, LLC 2014-05-22 yes yes
240-955 Bandwidth BANDWIDTH.COM CLEC, LLC - MD 2022-08-25 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
PEERLESS NETWORK OF MARYLAND, LLC Peerless 2 25%
ONVOY, LLC - MD Onvoy 1 12.5%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 12.5%
CORE COMMUNICATIONS, INC.- MD – 1 12.5%
LEVEL 3 COMMUNICATIONS, LLC - MD Lumen 1 12.5%
CENTURYLINK COMMUNICATIONS, LLC Lumen 1 12.5%
BANDWIDTH.COM CLEC, LLC - MD Bandwidth 1 12.5%

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 LA PLATA in area code 240?

8 blocks: 208, 349, 352, 523, 622, 776, 901, 955. The table above gives the holder of each.

Which carriers have numbers in LA PLATA?

PEERLESS NETWORK OF MARYLAND, LLC (2 blocks), ONVOY, LLC - MD (1 block), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (1 block), CORE COMMUNICATIONS, INC.- MD (1 block), LEVEL 3 COMMUNICATIONS, LLC - MD (1 block), CENTURYLINK COMMUNICATIONS, 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 LA PLATA 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