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

MANTECA prefixes in area code 209

NANPA records 44 assigned NXX blocks to rate center MANTECA in area code 209, 5.6% of the 784 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. 15 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC (19), FRONTIER CALIFORNIA INC. (5), T-MOBILE USA, INC. (4). The earliest assignment on record here is 2002-02-21 and the most recent 2025-01-28. 29 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 code 350 – overlay codes cover the same geography, so a rate center is served by all of them.

44 assigned blocks – 5.6% of 209
15 holders of record
29 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
209-239 Frontier FRONTIER CALIFORNIA INC. – no yes
209-249 UTILITY TELECOM GROUP, LLC - CA – yes yes
209-275 T-Mobile T-MOBILE USA, INC. 2002-02-21 yes yes
209-302 T-Mobile T-MOBILE USA, INC. 2015-04-01 yes yes
209-305 AT&T NEW CINGULAR WIRELESS PCS, LLC 2017-04-14 yes yes
209-328 T-Mobile T-MOBILE USA, INC. 2014-09-23 yes yes
209-397 Twilio TWILIO INTERNATIONAL, INC. 2025-01-28 yes yes
209-399 HD CARRIER LLC 2019-10-02 yes yes
209-456 T-Mobile METROPCS, INC. – yes yes
209-481 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
209-482 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
209-483 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
209-510 Charter ONVOY SPECTRUM, LLC 2019-10-03 yes yes
209-539 AT&T NEW CINGULAR WIRELESS PCS, LLC 2020-07-09 yes yes
209-601 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
209-603 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
209-607 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
209-608 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
209-609 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
209-610 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
209-612 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
209-624 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
209-629 AT&T NEW CINGULAR WIRELESS PCS, LLC – yes yes
209-647 WIDE VOICE, LLC - CA 2010-01-22 yes yes
209-665 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA – yes yes
209-673 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2020-04-24 yes yes
209-679 AT&T NEW CINGULAR WIRELESS PCS, LLC – yes yes
209-698 AT&T NEW CINGULAR WIRELESS PCS, LLC 2020-09-08 yes yes
209-705 AT&T NEW CINGULAR WIRELESS PCS, LLC 2020-09-01 yes yes
209-707 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA 2016-06-29 yes yes
209-717 T-Mobile T-MOBILE USA, INC. 2020-10-15 yes yes
209-739 AT&T NEW CINGULAR WIRELESS PCS, LLC 2020-09-08 yes yes
209-775 Onvoy ONVOY, LLC - CA – yes yes
209-815 AT&T NEW CINGULAR WIRELESS PCS, LLC – yes yes
209-823 Frontier FRONTIER CALIFORNIA INC. – no yes
209-824 Frontier FRONTIER CALIFORNIA INC. – no yes
209-825 Frontier FRONTIER CALIFORNIA INC. – no yes
209-858 Frontier FRONTIER CALIFORNIA INC. – yes yes
209-880 SKYE TELECOM LLC DBA SKYETEL 2021-10-08 yes yes
209-884 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2021-06-23 yes yes
209-923 AT&T AT&T - LOCAL 2003-08-25 yes yes
209-969 AT&T NEW CINGULAR WIRELESS PCS, LLC – no yes
209-972 HD CARRIER LLC 2022-09-09 yes yes
209-998 FRACTEL, LLC 2021-08-09 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
NEW CINGULAR WIRELESS PCS, LLC AT&T 19 43.2%
FRONTIER CALIFORNIA INC. Frontier 5 11.4%
T-MOBILE USA, INC. T-Mobile 4 9.1%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA Verizon 3 6.8%
HD CARRIER LLC – 2 4.5%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 2 4.5%
UTILITY TELECOM GROUP, LLC - CA – 1 2.3%
TWILIO INTERNATIONAL, INC. Twilio 1 2.3%
METROPCS, INC. T-Mobile 1 2.3%
ONVOY SPECTRUM, LLC Charter 1 2.3%
WIDE VOICE, LLC - CA – 1 2.3%
ONVOY, LLC - CA Onvoy 1 2.3%
SKYE TELECOM LLC DBA SKYETEL – 1 2.3%
AT&T - LOCAL AT&T 1 2.3%
FRACTEL, LLC – 1 2.3%

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 MANTECA in area code 209?

44 blocks: 239, 249, 275, 302, 305, 328, 397, 399, 456, 481, 482, 483 and 32 more, all listed in the table above.

Which carriers have numbers in MANTECA?

NEW CINGULAR WIRELESS PCS, LLC (19 blocks), FRONTIER CALIFORNIA INC. (5 blocks), T-MOBILE USA, INC. (4 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (3 blocks), HD CARRIER LLC (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - CA (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is MANTECA 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 209

All 784 prefixes in 209