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

STEWARTSVL prefixes in area code 816

NANPA records 3 assigned NXX blocks to rate center STEWARTSVL in area code 816, 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 ONVOY, LLC - MO (1), BRIGHTSPEED OF EAST MISSOURI, LLC (1), TELNYX LLC (1). The earliest assignment on record here is 2021-03-05 and the most recent 2021-05-10. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

3 assigned blocks – 0.4% of 816
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
816-638 Onvoy ONVOY, LLC - MO 2021-03-05 yes yes
816-669 Brightspeed BRIGHTSPEED OF EAST MISSOURI, LLC – yes yes
816-696 Telnyx TELNYX LLC 2021-05-10 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 - MO Onvoy 1 33.3%
BRIGHTSPEED OF EAST MISSOURI, LLC Brightspeed 1 33.3%
TELNYX LLC Telnyx 1 33.3%

Frequently asked

Which prefixes belong to STEWARTSVL in area code 816?

3 blocks: 638, 669, 696. The table above gives the holder of each.

Which carriers have numbers in STEWARTSVL?

ONVOY, LLC - MO (1 block), BRIGHTSPEED OF EAST MISSOURI, LLC (1 block), TELNYX 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 STEWARTSVL 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 816

All 785 prefixes in 816