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

HTCHCCKSNF prefixes in area code 409

NANPA records 13 assigned NXX blocks to rate center HTCHCCKSNF in area code 409, 3.0% of the 434 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 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (5), NEW CINGULAR WIRELESS PCS, LLC - IL (3), ONVOY, LLC - TX (2). The earliest assignment on record here is 2015-12-16 and the most recent 2024-02-16. 11 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

13 assigned blocks – 3% of 409
6 holders of record
11 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
409-204 Onvoy ONVOY, LLC - TX 2017-05-18 yes yes
409-218 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2015-12-16 yes yes
409-270 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2021-11-17 yes yes
409-312 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2023-07-07 yes yes
409-316 Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS – yes yes
409-328 Twilio TWILIO INTERNATIONAL, INC. 2024-02-16 yes yes
409-440 GRANDE COMMUNICATIONS NETWORKS, INC. - TX – yes yes
409-904 Onvoy ONVOY, LLC - TX 2018-11-20 yes yes
409-925 Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS – no yes
409-927 Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS – yes yes
409-977 FRACTEL, LLC 2020-07-09 yes yes
409-978 Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS – yes yes
409-986 Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS – no 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
FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS Frontier 5 38.5%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 3 23.1%
ONVOY, LLC - TX Onvoy 2 15.4%
TWILIO INTERNATIONAL, INC. Twilio 1 7.7%
GRANDE COMMUNICATIONS NETWORKS, INC. - TX – 1 7.7%
FRACTEL, LLC – 1 7.7%

Frequently asked

Which prefixes belong to HTCHCCKSNF in area code 409?

13 blocks: 204, 218, 270, 312, 316, 328, 440, 904, 925, 927, 977, 978 and 1 more, all listed in the table above.

Which carriers have numbers in HTCHCCKSNF?

FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (5 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (3 blocks), ONVOY, LLC - TX (2 blocks), TWILIO INTERNATIONAL, INC. (1 block), GRANDE COMMUNICATIONS NETWORKS, INC. - TX (1 block), FRACTEL, 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 HTCHCCKSNF 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 409

All 434 prefixes in 409