SPRING prefixes in area code 346
NANPA records 36 assigned NXX blocks to rate center SPRING in area code 346, 4.8% 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. 13 holders hold those blocks, the largest being CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (8), AERIAL COMMUNICATIONS, INC. (5), NEW CINGULAR WIRELESS PCS, LLC - IL (5). The earliest assignment on record here is 2015-05-07 and the most recent 2026-07-24. 36 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.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 346-220 | Onvoy ONVOY, LLC - TX | 2015-12-23 | yes | yes |
| 346-224 | Comcast COMCAST IP PHONE, LLC | 2015-06-22 | yes | yes |
| 346-268 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2017-09-07 | yes | yes |
| 346-298 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2018-03-09 | yes | yes |
| 346-305 | AT&T SOUTHWESTERN BELL | 2015-05-07 | yes | yes |
| 346-328 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 2018-03-23 | yes | yes |
| 346-331 | Comcast COMCAST IP PHONE, LLC | 2015-07-17 | yes | yes |
| 346-334 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2018-04-17 | yes | yes |
| 346-351 | Charter CHARTER IP ENABLED SERVICES, LLC | 2016-05-25 | yes | yes |
| 346-370 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2018-10-11 | yes | yes |
| 346-372 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 2018-10-18 | yes | yes |
| 346-380 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2019-01-24 | yes | yes |
| 346-382 | VoIP Innovations VOIP INNOVATIONS, LLC | 2019-01-24 | yes | yes |
| 346-386 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2019-04-17 | yes | yes |
| 346-413 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2016-12-20 | yes | yes |
| 346-442 | Comcast COMCAST IP PHONE, LLC | 2020-10-07 | yes | yes |
| 346-443 | Comcast COMCAST IP PHONE, LLC | 2020-10-07 | yes | yes |
| 346-459 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2021-04-12 | yes | yes |
| 346-478 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2021-06-30 | yes | yes |
| 346-495 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2021-08-13 | yes | yes |
| 346-497 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2021-08-17 | yes | yes |
| 346-525 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2021-11-17 | yes | yes |
| 346-574 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2022-07-15 | yes | yes |
| 346-581 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2022-08-19 | yes | yes |
| 346-589 | Bandwidth BANDWIDTH.COM CLEC, LLC - TX | 2022-09-16 | yes | yes |
| 346-625 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2023-01-05 | yes | yes |
| 346-672 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2023-06-14 | yes | yes |
| 346-740 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2023-11-15 | yes | yes |
| 346-756 | COMMIO, LLC | 2023-12-21 | yes | yes |
| 346-786 | FRACTEL, LLC | 2020-06-22 | yes | yes |
| 346-814 | T-Mobile AERIAL COMMUNICATIONS, INC. | 2015-12-10 | yes | yes |
| 346-828 | Onvoy ONVOY, LLC - TX | 2024-06-10 | yes | yes |
| 346-831 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2015-12-15 | yes | yes |
| 346-872 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2025-05-29 | yes | yes |
| 346-905 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 2025-12-03 | yes | yes |
| 346-937 | Onvoy ONVOY, LLC - TX | 2026-07-24 | yes | no |
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 |
|---|---|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | Verizon | 8 | 22.2% |
| AERIAL COMMUNICATIONS, INC. | T-Mobile | 5 | 13.9% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 5 | 13.9% |
| COMCAST IP PHONE, LLC | Comcast | 4 | 11.1% |
| BANDWIDTH.COM CLEC, LLC - TX | Bandwidth | 4 | 11.1% |
| ONVOY, LLC - TX | Onvoy | 3 | 8.3% |
| SOUTHWESTERN BELL | AT&T | 1 | 2.8% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - TX | AT&T | 1 | 2.8% |
| CHARTER IP ENABLED SERVICES, LLC | Charter | 1 | 2.8% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | Verizon | 1 | 2.8% |
| VOIP INNOVATIONS, LLC | VoIP Innovations | 1 | 2.8% |
| COMMIO, LLC | – | 1 | 2.8% |
| FRACTEL, LLC | – | 1 | 2.8% |
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 SPRING in area code 346?
36 blocks: 220, 224, 268, 298, 305, 328, 331, 334, 351, 370, 372, 380 and 24 more, all listed in the table above.
Which carriers have numbers in SPRING?
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (8 blocks), AERIAL COMMUNICATIONS, INC. (5 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (5 blocks), COMCAST IP PHONE, LLC (4 blocks), BANDWIDTH.COM CLEC, LLC - TX (4 blocks), ONVOY, LLC - TX (3 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is SPRING 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.