Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
MODESTO prefixes in area code 209
NANPA records 137 assigned NXX blocks to rate center MODESTO in area code 209, 17.5% 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. 18 holders hold those blocks, the largest being PACIFIC BELL (43), NEW CINGULAR WIRELESS PCS, LLC (27), T-MOBILE USA, INC. (11). The earliest assignment on record here is 2001-06-26 and the most recent 2022-09-28. 93 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 217, 350, 447, 559 – overlay codes cover the same geography, so a rate center is served by all of them.
137 assigned blocks – 17.5% of 209
18 holders of record
93 of them pooled in 1,000-number lots
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 209-204 | T-Mobile T-MOBILE USA, INC. | 2001-12-26 | yes | yes |
| 209-209 | Onvoy ONVOY, LLC - CA | 2022-09-28 | yes | yes |
| 209-214 | T-Mobile METROPCS, INC. | 2009-03-02 | yes | yes |
| 209-222 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 209-225 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2011-10-10 | yes | yes |
| 209-232 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 2009-05-21 | yes | yes |
| 209-236 | AT&T PACIFIC BELL | – | yes | yes |
| 209-238 | AT&T PACIFIC BELL | – | yes | yes |
| 209-241 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 209-247 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2004-11-24 | yes | yes |
| 209-248 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | – | yes | yes |
| 209-272 | T-Mobile T-MOBILE USA, INC. | 2012-04-30 | yes | yes |
| 209-281 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2015-08-03 | yes | yes |
| 209-284 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2014-09-30 | yes | yes |
| 209-287 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2015-09-16 | yes | yes |
| 209-289 | XO CALIFORNIA, INC. | 2014-10-20 | yes | yes |
| 209-300 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 209-301 | T-Mobile METROPCS, INC. | 2018-06-25 | yes | yes |
| 209-303 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-11-28 | yes | yes |
| 209-312 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-06-26 | yes | yes |
| 209-324 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 209-338 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 209-341 | AT&T PACIFIC BELL | – | yes | yes |
| 209-342 | AT&T PACIFIC BELL | – | yes | yes |
| 209-343 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 209-344 | American Messaging AMERICAN MESSAGING SERVICES, LLC | – | no | yes |
| 209-345 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 209-353 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2013-12-11 | yes | yes |
| 209-360 | T-Mobile T-MOBILE USA, INC. | 2016-08-26 | yes | yes |
| 209-380 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 209-402 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 209-404 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 209-408 | Comcast COMCAST PHONE OF CALIFORNIA, LLC | 2007-07-02 | yes | yes |
| 209-409 | T-Mobile METROPCS, INC. | 2007-07-05 | yes | yes |
| 209-412 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2019-12-24 | yes | yes |
| 209-416 | T-Mobile METROPCS, INC. | 2007-07-13 | yes | yes |
| 209-422 | Comcast COMCAST PHONE OF CALIFORNIA, LLC | 2015-03-20 | yes | yes |
| 209-424 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2020-03-27 | yes | yes |
| 209-447 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2015-03-16 | yes | yes |
| 209-450 | T-Mobile METROPCS, INC. | 2006-06-19 | yes | yes |
| 209-458 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 2018-03-15 | yes | yes |
| 209-480 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 209-484 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 209-486 | T-Mobile T-MOBILE USA, INC. | 2015-05-04 | yes | yes |
| 209-488 | T-Mobile METROPCS, INC. | 2018-08-17 | yes | yes |
| 209-491 | AT&T PACIFIC BELL | – | no | yes |
| 209-492 | AT&T PACIFIC BELL | – | no | yes |
| 209-494 | T-Mobile T-MOBILE USA, INC. | 2019-10-18 | yes | yes |
| 209-495 | T-Mobile METROPCS, INC. | – | yes | yes |
| 209-496 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2002-05-17 | yes | yes |
| 209-497 | UTILITY TELECOM GROUP, LLC - CA | 2015-05-14 | yes | yes |
| 209-499 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-07-16 | no | yes |
| 209-501 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2020-06-02 | yes | yes |
| 209-505 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-08-22 | no | yes |
| 209-520 | American Messaging AMERICAN MESSAGING SERVICES, LLC | – | no | yes |
| 209-521 | AT&T PACIFIC BELL | – | no | yes |
| 209-522 | AT&T PACIFIC BELL | – | no | yes |
| 209-523 | AT&T PACIFIC BELL | – | no | yes |
| 209-524 | AT&T PACIFIC BELL | – | no | yes |
| 209-525 | AT&T PACIFIC BELL | – | no | yes |
| 209-526 | AT&T PACIFIC BELL | – | no | yes |
| 209-527 | AT&T PACIFIC BELL | – | no | yes |
| 209-529 | AT&T PACIFIC BELL | – | no | yes |
| 209-530 | AT&T PACIFIC BELL | – | no | yes |
| 209-531 | AT&T PACIFIC BELL | – | yes | yes |
| 209-534 | T-Mobile T-MOBILE USA, INC. | 2001-11-28 | yes | yes |
| 209-537 | AT&T PACIFIC BELL | – | no | yes |
| 209-538 | AT&T PACIFIC BELL | – | no | yes |
| 209-541 | AT&T PACIFIC BELL | – | yes | yes |
| 209-543 | AT&T PACIFIC BELL | – | yes | yes |
| 209-544 | AT&T PACIFIC BELL | – | no | yes |
| 209-545 | AT&T PACIFIC BELL | – | no | yes |
| 209-548 | AT&T PACIFIC BELL | – | yes | yes |
| 209-549 | AT&T PACIFIC BELL | – | yes | yes |
| 209-550 | AT&T PACIFIC BELL | – | yes | yes |
| 209-551 | AT&T PACIFIC BELL | – | no | yes |
| 209-552 | AT&T PACIFIC BELL | – | yes | yes |
| 209-554 | Onvoy ONVOY, LLC - CA | – | no | yes |
| 209-556 | AT&T PACIFIC BELL | – | yes | yes |
| 209-557 | AT&T PACIFIC BELL | – | yes | yes |
| 209-558 | AT&T PACIFIC BELL | – | yes | yes |
| 209-566 | Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 2008-07-21 | yes | yes |
| 209-567 | AT&T PACIFIC BELL | – | yes | yes |
| 209-568 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2005-06-03 | yes | yes |
| 209-569 | AT&T PACIFIC BELL | – | yes | yes |
| 209-571 | AT&T PACIFIC BELL | – | no | yes |
| 209-572 | AT&T PACIFIC BELL | – | no | yes |
| 209-573 | AT&T PACIFIC BELL | – | yes | yes |
| 209-574 | AT&T PACIFIC BELL | – | yes | yes |
| 209-575 | AT&T PACIFIC BELL | – | no | yes |
| 209-576 | AT&T PACIFIC BELL | – | yes | yes |
| 209-577 | AT&T PACIFIC BELL | – | no | yes |
| 209-578 | AT&T PACIFIC BELL | – | no | yes |
| 209-579 | AT&T PACIFIC BELL | – | yes | yes |
| 209-581 | AT&T PACIFIC BELL | – | yes | yes |
| 209-589 | Onvoy ONVOY, LLC - CA | 2009-01-05 | yes | yes |
| 209-593 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 209-595 | T-Mobile METROPCS, INC. | – | yes | yes |
| 209-596 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2006-06-16 | yes | yes |
| 209-602 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 209-604 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 209-605 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 209-606 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 209-613 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 209-614 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 209-618 | T-Mobile METROPCS, INC. | 2019-03-18 | yes | yes |
| 209-622 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | – | yes | yes |
| 209-652 | T-Mobile METROPCS, INC. | – | yes | yes |
| 209-653 | Onvoy ONVOY, LLC - CA | – | no | yes |
| 209-661 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2011-06-17 | yes | yes |
| 209-672 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2017-03-29 | yes | yes |
| 209-681 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 209-702 | T-Mobile T-MOBILE USA, INC. | 2016-04-06 | yes | yes |
| 209-718 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | – | yes | yes |
| 209-735 | AT&T PACIFIC BELL | 2005-11-22 | yes | yes |
| 209-750 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2020-09-08 | yes | yes |
| 209-758 | Onvoy ONVOY, LLC - CA | – | no | yes |
| 209-765 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 209-771 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2020-09-08 | yes | yes |
| 209-799 | FRACTEL, LLC | 2020-07-21 | yes | yes |
| 209-809 | Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 2010-08-20 | yes | yes |
| 209-818 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | yes | yes |
| 209-846 | Comcast COMCAST PHONE OF CALIFORNIA, LLC | 2006-07-26 | yes | yes |
| 209-849 | T-Mobile T-MOBILE USA, INC. | 2021-07-16 | yes | yes |
| 209-857 | T-Mobile T-MOBILE USA, INC. | 2014-03-21 | yes | yes |
| 209-859 | Comcast COMCAST PHONE OF CALIFORNIA, LLC | 2020-09-22 | yes | yes |
| 209-860 | UTILITY TELECOM GROUP, LLC - CA | 2021-02-02 | yes | yes |
| 209-872 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-09-19 | yes | yes |
| 209-876 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2022-01-12 | yes | yes |
| 209-900 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 209-918 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 209-961 | Dish BOOST SUBSCRIBERCO L.L.C. | 2022-01-12 | yes | yes |
| 209-968 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 209-971 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 2022-07-11 | yes | yes |
| 209-985 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 209-988 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 209-996 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | 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
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| PACIFIC BELL | AT&T | 43 | 31.4% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 27 | 19.7% |
| T-MOBILE USA, INC. | T-Mobile | 11 | 8% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Verizon | 11 | 8% |
| METROPCS, INC. | T-Mobile | 10 | 7.3% |
| ONVOY, LLC - CA | Onvoy | 9 | 6.6% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 4 | 2.9% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 4 | 2.9% |
| COMCAST PHONE OF CALIFORNIA, LLC | Comcast | 4 | 2.9% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 3 | 2.2% |
| AMERICAN MESSAGING SERVICES, LLC | American Messaging | 2 | 1.5% |
| UTILITY TELECOM GROUP, LLC - CA | – | 2 | 1.5% |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | Lumen | 2 | 1.5% |
| XO CALIFORNIA, INC. | – | 1 | 0.7% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | Verizon | 1 | 0.7% |
| FRACTEL, LLC | – | 1 | 0.7% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | AT&T | 1 | 0.7% |
| BOOST SUBSCRIBERCO L.L.C. | Dish | 1 | 0.7% |
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 MODESTO in area code 209?
137 blocks: 204, 209, 214, 222, 225, 232, 236, 238, 241, 247, 248, 272 and 125 more, all listed in the table above.
Which carriers have numbers in MODESTO?
PACIFIC BELL (43 blocks), NEW CINGULAR WIRELESS PCS, LLC (27 blocks), T-MOBILE USA, INC. (11 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (11 blocks), METROPCS, INC. (10 blocks), ONVOY, LLC - CA (9 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is MODESTO 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.