ANTONIA prefixes in area code 636
NANPA records 6 assigned NXX blocks to rate center ANTONIA in area code 636, 1.4% of the 435 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. 5 holders hold those blocks, the largest being SOUTHWESTERN BELL (2), ONVOY, LLC - MO (1), LEVEL 3 COMMUNICATIONS, LLC - MO (1). The earliest assignment on record here is 2003-01-10 and the most recent 2025-07-24. 6 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 636-267 | Onvoy ONVOY, LLC - MO | 2024-02-01 | yes | yes |
| 636-323 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MO | 2003-01-10 | yes | yes |
| 636-473 | AT&T AT&T - LOCAL | 2025-07-24 | yes | yes |
| 636-674 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 636-942 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 636-948 | AT&T SOUTHWESTERN BELL | – | 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
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| SOUTHWESTERN BELL | AT&T | 2 | 33.3% |
| ONVOY, LLC - MO | Onvoy | 1 | 16.7% |
| LEVEL 3 COMMUNICATIONS, LLC - MO | Lumen | 1 | 16.7% |
| AT&T - LOCAL | AT&T | 1 | 16.7% |
| PAETEC ITEL, LLC | Windstream | 1 | 16.7% |
Frequently asked
Which prefixes belong to ANTONIA in area code 636?
6 blocks: 267, 323, 473, 674, 942, 948. The table above gives the holder of each.
Which carriers have numbers in ANTONIA?
SOUTHWESTERN BELL (2 blocks), ONVOY, LLC - MO (1 block), LEVEL 3 COMMUNICATIONS, LLC - MO (1 block), AT&T - LOCAL (1 block), PAETEC ITEL, 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 ANTONIA 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.