HIGH RIDGE prefixes in area code 636
NANPA records 11 assigned NXX blocks to rate center HIGH RIDGE in area code 636, 2.5% 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. 6 holders hold those blocks, the largest being SOUTHWESTERN BELL (4), T-MOBILE USA, INC. (2), PAETEC ITEL, LLC (2). The earliest assignment on record here is 2001-05-07 and the most recent 2024-03-21. 10 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 |
|---|---|---|---|---|
| 636-253 | T-Mobile T-MOBILE USA, INC. | 2001-05-07 | yes | yes |
| 636-375 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 636-376 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 636-408 | Onvoy ONVOY, LLC - MO | 2024-03-21 | yes | yes |
| 636-428 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 2015-06-16 | yes | yes |
| 636-495 | Windstream PAETEC ITEL, LLC | 2013-08-19 | yes | yes |
| 636-575 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2001-11-12 | yes | yes |
| 636-671 | AT&T SOUTHWESTERN BELL | – | yes | yes |
| 636-677 | AT&T SOUTHWESTERN BELL | – | no | yes |
| 636-692 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 636-829 | T-Mobile T-MOBILE USA, INC. | 2019-02-06 | 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 | 4 | 36.4% |
| T-MOBILE USA, INC. | T-Mobile | 2 | 18.2% |
| PAETEC ITEL, LLC | Windstream | 2 | 18.2% |
| ONVOY, LLC - MO | Onvoy | 1 | 9.1% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MO | AT&T | 1 | 9.1% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 1 | 9.1% |
Frequently asked
Which prefixes belong to HIGH RIDGE in area code 636?
11 blocks: 253, 375, 376, 408, 428, 495, 575, 671, 677, 692, 829. The table above gives the holder of each.
Which carriers have numbers in HIGH RIDGE?
SOUTHWESTERN BELL (4 blocks), T-MOBILE USA, INC. (2 blocks), PAETEC ITEL, LLC (2 blocks), ONVOY, LLC - MO (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - MO (1 block), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is HIGH RIDGE 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.