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

BAYTOWN prefixes in area code 346

NANPA records 20 assigned NXX blocks to rate center BAYTOWN in area code 346, 2.7% of the 752 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. 11 holders hold those blocks, the largest being AERIAL COMMUNICATIONS, INC. (4), NEW CINGULAR WIRELESS PCS, LLC - IL (3), FRACTEL, LLC (3). The earliest assignment on record here is 2015-01-26 and the most recent 2023-12-12. 20 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 281, 713, 832 – overlay codes cover the same geography, so a rate center is served by all of them.

20 assigned blocks – 2.7% of 346
11 holders of record
20 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
346-216 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 2015-01-26 yes yes
346-233 Onvoy ONVOY, LLC - TX 2016-03-03 yes yes
346-259 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX 2017-03-16 yes yes
346-263 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2017-06-15 yes yes
346-292 Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 2017-12-26 yes yes
346-431 T-Mobile AERIAL COMMUNICATIONS, INC. 2020-08-28 yes yes
346-472 Telnyx TELNYX LLC 2021-06-09 yes yes
346-533 SKYE TELECOM LLC DBA SKYETEL 2021-09-07 yes yes
346-548 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 2022-02-07 yes yes
346-549 T-Mobile AERIAL COMMUNICATIONS, INC. 2022-01-26 yes yes
346-602 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2022-10-28 yes yes
346-630 T-Mobile AERIAL COMMUNICATIONS, INC. 2023-01-04 yes yes
346-660 Charter ONVOY SPECTRUM, LLC 2021-02-03 yes yes
346-671 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2023-06-08 yes yes
346-677 FRACTEL, LLC 2020-06-22 yes yes
346-710 Charter ONVOY SPECTRUM, LLC 2019-10-09 yes yes
346-737 T-Mobile AERIAL COMMUNICATIONS, INC. 2023-10-31 yes yes
346-749 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 2023-12-12 yes yes
346-855 FRACTEL, LLC 2021-07-30 yes yes
346-977 FRACTEL, LLC 2019-09-20 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
AERIAL COMMUNICATIONS, INC. T-Mobile 4 20%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 3 15%
FRACTEL, LLC – 3 15%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX Verizon 2 10%
ONVOY SPECTRUM, LLC Charter 2 10%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX Verizon 1 5%
ONVOY, LLC - TX Onvoy 1 5%
TELEPORT COMMUNICATIONS AMERICA, LLC - TX AT&T 1 5%
LEVEL 3 OF TELECOM OF TEXAS, LLC - TX Lumen 1 5%
TELNYX LLC Telnyx 1 5%
SKYE TELECOM LLC DBA SKYETEL – 1 5%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to BAYTOWN in area code 346?

20 blocks: 216, 233, 259, 263, 292, 431, 472, 533, 548, 549, 602, 630 and 8 more, all listed in the table above.

Which carriers have numbers in BAYTOWN?

AERIAL COMMUNICATIONS, INC. (4 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (3 blocks), FRACTEL, LLC (3 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (2 blocks), ONVOY SPECTRUM, LLC (2 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is BAYTOWN 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 346

All 752 prefixes in 346