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

STEWARTVL prefixes in area code 507

NANPA records 4 assigned NXX blocks to rate center STEWARTVL in area code 507, 0.5% of the 766 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. 2 holders hold those blocks, the largest being ONVOY, LLC - MN (3), QWEST CORPORATION (1). The earliest assignment on record here is 2006-09-10 and the most recent 2022-11-23. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

4 assigned blocks – 0.5% of 507
2 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
507-504 Onvoy ONVOY, LLC - MN – yes yes
507-533 Lumen QWEST CORPORATION – yes yes
507-944 Onvoy ONVOY, LLC - MN 2006-09-10 yes yes
507-975 Onvoy ONVOY, LLC - MN 2022-11-23 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
ONVOY, LLC - MN Onvoy 3 75%
QWEST CORPORATION Lumen 1 25%

Frequently asked

Which prefixes belong to STEWARTVL in area code 507?

4 blocks: 504, 533, 944, 975. The table above gives the holder of each.

Which carriers have numbers in STEWARTVL?

ONVOY, LLC - MN (3 blocks), QWEST CORPORATION (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is STEWARTVL 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 507

All 766 prefixes in 507