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

SMITHSBURG prefixes in area code 240

NANPA records 3 assigned NXX blocks to rate center SMITHSBURG in area code 240, 0.4% 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. 3 holders hold those blocks, the largest being CORE COMMUNICATIONS, INC.- MD (1), BANDWIDTH.COM CLEC, LLC - MD (1), ONVOY, LLC - MD (1). The earliest assignment on record here is 2012-03-22 and the most recent 2021-09-01. 3 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.

3 assigned blocks – 0.4% of 240
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
240-649 CORE COMMUNICATIONS, INC.- MD 2018-06-12 yes yes
240-734 Bandwidth BANDWIDTH.COM CLEC, LLC - MD 2012-03-22 yes yes
240-809 Onvoy ONVOY, LLC - MD 2021-09-01 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
CORE COMMUNICATIONS, INC.- MD – 1 33.3%
BANDWIDTH.COM CLEC, LLC - MD Bandwidth 1 33.3%
ONVOY, LLC - MD Onvoy 1 33.3%

Frequently asked

Which prefixes belong to SMITHSBURG in area code 240?

3 blocks: 649, 734, 809. The table above gives the holder of each.

Which carriers have numbers in SMITHSBURG?

CORE COMMUNICATIONS, INC.- MD (1 block), BANDWIDTH.COM CLEC, LLC - MD (1 block), ONVOY, LLC - MD (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is SMITHSBURG 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