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

OAKVILLE prefixes in area code 314

NANPA records 11 assigned NXX blocks to rate center OAKVILLE in area code 314, 1.4% of the 783 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. 7 holders hold those blocks, the largest being ONVOY, LLC - MO (4), SOUTHWESTERN BELL (2), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO (1). The earliest assignment on record here is 2020-02-11 and the most recent 2023-03-15. 10 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 319, 557 – overlay codes cover the same geography, so a rate center is served by all of them.

11 assigned blocks – 1.4% of 314
7 holders of record
10 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
314-293 AT&T SOUTHWESTERN BELL – yes yes
314-334 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO – yes yes
314-375 Windstream PAETEC ITEL, LLC – yes yes
314-380 Onvoy ONVOY, LLC - MO – yes yes
314-464 Onvoy ONVOY, LLC - MO 2020-10-19 yes yes
314-470 Onvoy ONVOY, LLC - MO 2020-02-11 yes yes
314-549 Lumen LEVEL 3 COMMUNICATIONS, LLC - MO – yes yes
314-636 LEAP TELECOM, LLC 2023-03-15 yes yes
314-794 Onvoy ONVOY, LLC - MO 2021-07-30 yes yes
314-846 AT&T SOUTHWESTERN BELL – no yes
314-988 FRACTEL, LLC 2022-03-10 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 4 36.4%
SOUTHWESTERN BELL AT&T 2 18.2%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO Verizon 1 9.1%
PAETEC ITEL, LLC Windstream 1 9.1%
LEVEL 3 COMMUNICATIONS, LLC - MO Lumen 1 9.1%
LEAP TELECOM, LLC – 1 9.1%
FRACTEL, LLC – 1 9.1%

Frequently asked

Which prefixes belong to OAKVILLE in area code 314?

11 blocks: 293, 334, 375, 380, 464, 470, 549, 636, 794, 846, 988. The table above gives the holder of each.

Which carriers have numbers in OAKVILLE?

ONVOY, LLC - MO (4 blocks), SOUTHWESTERN BELL (2 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO (1 block), PAETEC ITEL, LLC (1 block), LEVEL 3 COMMUNICATIONS, LLC - MO (1 block), LEAP TELECOM, 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 OAKVILLE 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 314

All 783 prefixes in 314