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

HAGERSTOWN prefixes in area code 227

NANPA records 3 assigned NXX blocks to rate center HAGERSTOWN in area code 227, 2.1% of the 142 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 CALLWORKS CORPORATION (1), ONVOY, LLC - MD (1), WAVENATION, LLC (1). The earliest assignment on record here is 2024-05-20 and the most recent 2025-11-26. 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 240, 301, 765 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 2.1% of 227
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
227-239 CALLWORKS CORPORATION 2024-05-20 yes yes
227-288 Onvoy ONVOY, LLC - MD 2025-08-13 yes yes
227-295 WAVENATION, LLC 2025-11-26 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
CALLWORKS CORPORATION – 1 33.3%
ONVOY, LLC - MD Onvoy 1 33.3%
WAVENATION, LLC – 1 33.3%

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 HAGERSTOWN in area code 227?

3 blocks: 239, 288, 295. The table above gives the holder of each.

Which carriers have numbers in HAGERSTOWN?

CALLWORKS CORPORATION (1 block), ONVOY, LLC - MD (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 HAGERSTOWN 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 227

All 142 prefixes in 227