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

STEVENSVL prefixes in area code 667

NANPA records 3 assigned NXX blocks to rate center STEVENSVL in area code 667, 0.7% of the 454 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), COMMIO, LLC (1), ONVOY, LLC - MD (1). The earliest assignment on record here is 2018-06-04 and the most recent 2022-09-15. 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 406, 410, 443 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 0.7% of 667
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
667-364 CORE COMMUNICATIONS, INC.- MD 2018-06-04 yes yes
667-566 COMMIO, LLC 2022-09-15 yes yes
667-766 Onvoy ONVOY, LLC - MD 2021-03-18 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%
COMMIO, LLC – 1 33.3%
ONVOY, LLC - MD Onvoy 1 33.3%

Frequently asked

Which prefixes belong to STEVENSVL in area code 667?

3 blocks: 364, 566, 766. The table above gives the holder of each.

Which carriers have numbers in STEVENSVL?

CORE COMMUNICATIONS, INC.- MD (1 block), COMMIO, LLC (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 STEVENSVL 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 667

All 454 prefixes in 667