Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
STOCKTON prefixes in area code 209
NANPA records 138 assigned NXX blocks to rate center STOCKTON in area code 209, 17.6% 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. 25 holders hold those blocks, the largest being PACIFIC BELL (43), T-MOBILE USA, INC. (14), ONVOY, LLC - CA (13). The earliest assignment on record here is 2001-08-21 and the most recent 2023-10-16. 94 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 350, 417, 779, 785 – overlay codes cover the same geography, so a rate center is served by all of them.
138 assigned blocks – 17.6% of 209
25 holders of record
94 of them pooled in 1,000-number lots
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 209-227 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2009-04-28 | yes | yes |
| 209-234 | AT&T PACIFIC BELL | – | no | yes |
| 209-235 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | – | yes | yes |
| 209-242 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | – | yes | yes |
| 209-244 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 209-271 | T-Mobile METROPCS, INC. | 2001-08-21 | no | yes |
| 209-279 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2016-07-29 | yes | yes |
| 209-290 | Vonage VONAGE AMERICA LLC | 2017-08-31 | yes | yes |
| 209-292 | T-Mobile T-MOBILE USA, INC. | 2013-07-11 | yes | yes |
| 209-298 | T-Mobile T-MOBILE USA, INC. | 2001-09-19 | no | yes |
| 209-299 | Onvoy ONVOY, LLC - CA | 2017-02-28 | yes | yes |
| 209-307 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 2018-04-26 | yes | yes |
| 209-313 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 209-320 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 209-323 | NUSO, LLC | – | yes | yes |
| 209-337 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 209-361 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2014-11-03 | yes | yes |
| 209-373 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 2005-03-09 | yes | yes |
| 209-390 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 2007-03-30 | yes | yes |
| 209-395 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 209-401 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 209-403 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 209-405 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | yes | yes |
| 209-406 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 209-414 | CSC WIRELESS, LLC | 2020-02-13 | yes | yes |
| 209-420 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2015-10-05 | yes | yes |
| 209-423 | T-Mobile METROPCS, INC. | 2001-10-18 | yes | yes |
| 209-425 | T-Mobile METROPCS, INC. | 2015-03-04 | yes | yes |
| 209-430 | T-Mobile METROPCS, INC. | 2002-06-12 | no | yes |
| 209-444 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 209-451 | Onvoy ONVOY, LLC - CA | 2007-11-16 | yes | yes |
| 209-453 | T-Mobile T-MOBILE USA, INC. | 2015-04-01 | yes | yes |
| 209-460 | AT&T PACIFIC BELL | – | yes | yes |
| 209-461 | AT&T PACIFIC BELL | – | no | yes |
| 209-462 | AT&T PACIFIC BELL | – | no | yes |
| 209-463 | AT&T PACIFIC BELL | – | no | yes |
| 209-464 | AT&T PACIFIC BELL | – | no | yes |
| 209-465 | AT&T PACIFIC BELL | – | no | yes |
| 209-466 | AT&T PACIFIC BELL | – | no | yes |
| 209-467 | AT&T PACIFIC BELL | – | no | yes |
| 209-468 | AT&T PACIFIC BELL | – | no | yes |
| 209-469 | AT&T PACIFIC BELL | – | yes | yes |
| 209-470 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 209-471 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 209-472 | AT&T PACIFIC BELL | – | no | yes |
| 209-473 | AT&T PACIFIC BELL | – | no | yes |
| 209-474 | AT&T PACIFIC BELL | – | no | yes |
| 209-475 | AT&T PACIFIC BELL | – | yes | yes |
| 209-476 | AT&T PACIFIC BELL | – | no | yes |
| 209-477 | AT&T PACIFIC BELL | – | no | yes |
| 209-478 | AT&T PACIFIC BELL | – | no | yes |
| 209-479 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | yes | yes |
| 209-487 | Onvoy ONVOY, LLC - CA | 2007-12-21 | yes | yes |
| 209-490 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 209-507 | Onvoy ONVOY, LLC - CA | 2008-03-21 | yes | yes |
| 209-513 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | yes | yes |
| 209-518 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 209-546 | AT&T PACIFIC BELL | – | yes | yes |
| 209-547 | AT&T PACIFIC BELL | – | no | yes |
| 209-561 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2015-09-11 | yes | yes |
| 209-565 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2008-04-02 | yes | yes |
| 209-594 | Comcast COMCAST PHONE OF CALIFORNIA, LLC | 2006-06-28 | yes | yes |
| 209-598 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 209-615 | American Messaging AMERICAN MESSAGING SERVICES, LLC | – | no | yes |
| 209-616 | Charter ONVOY SPECTRUM, LLC | – | yes | yes |
| 209-623 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 209-636 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2015-06-05 | yes | yes |
| 209-639 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 209-641 | T-Mobile T-MOBILE USA, INC. | 2016-09-02 | yes | yes |
| 209-644 | Onvoy ONVOY, LLC - CA | – | no | yes |
| 209-645 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 209-649 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 209-659 | Twilio TWILIO INTERNATIONAL, INC. | – | yes | yes |
| 209-662 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | yes | yes |
| 209-670 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 209-684 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 209-685 | T-Mobile T-MOBILE USA, INC. | 2020-05-28 | yes | yes |
| 209-687 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2020-08-18 | yes | yes |
| 209-688 | T-Mobile METROPCS, INC. | 2002-09-10 | no | yes |
| 209-689 | Peerless PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 2014-08-28 | yes | yes |
| 209-696 | T-Mobile T-MOBILE USA, INC. | 2015-04-16 | yes | yes |
| 209-709 | Onvoy ONVOY, LLC - CA | 2023-10-16 | yes | yes |
| 209-715 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2014-08-12 | yes | yes |
| 209-751 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 209-762 | UTILITY TELECOM GROUP, LLC - CA | – | yes | yes |
| 209-774 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 209-792 | Comcast COMCAST PHONE OF CALIFORNIA, LLC | 2020-09-22 | yes | yes |
| 209-798 | IP HORIZON LLC | 2020-11-30 | yes | yes |
| 209-800 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | – | yes | yes |
| 209-808 | AT&T PACIFIC BELL | – | yes | yes |
| 209-817 | AT&T PACIFIC BELL | – | yes | yes |
| 209-851 | Lumen CENTURYLINK COMMUNICATIONS, LLC | 2014-05-30 | yes | yes |
| 209-868 | Charter ONVOY SPECTRUM, LLC | – | yes | yes |
| 209-870 | UTILITY TELECOM GROUP, LLC - CA | – | yes | yes |
| 209-871 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2021-06-30 | yes | yes |
| 209-888 | UTILITY TELECOM GROUP, LLC - CA | 2004-09-03 | yes | yes |
| 209-889 | T-Mobile T-MOBILE USA, INC. | 2021-03-18 | yes | yes |
| 209-898 | T-Mobile METROPCS, INC. | – | yes | yes |
| 209-901 | Onvoy ONVOY, LLC - CA | 2021-12-08 | yes | yes |
| 209-905 | T-Mobile T-MOBILE USA, INC. | 2016-11-21 | yes | yes |
| 209-910 | AT&T AT&T ENTERPRISES, LLC | – | yes | yes |
| 209-915 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 209-921 | Charter ONVOY SPECTRUM, LLC | 2021-03-11 | yes | yes |
| 209-922 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 2003-07-16 | yes | yes |
| 209-926 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 209-929 | NUSO, LLC | – | yes | yes |
| 209-931 | AT&T PACIFIC BELL | – | no | yes |
| 209-932 | AT&T PACIFIC BELL | – | yes | yes |
| 209-933 | AT&T PACIFIC BELL | – | yes | yes |
| 209-936 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2022-05-09 | yes | yes |
| 209-937 | AT&T PACIFIC BELL | – | yes | yes |
| 209-938 | AT&T PACIFIC BELL | – | yes | yes |
| 209-939 | AT&T PACIFIC BELL | – | no | yes |
| 209-940 | UTILITY TELECOM GROUP, LLC - CA | – | yes | yes |
| 209-941 | AT&T PACIFIC BELL | – | yes | yes |
| 209-942 | AT&T PACIFIC BELL | – | no | yes |
| 209-943 | AT&T PACIFIC BELL | – | no | yes |
| 209-944 | AT&T PACIFIC BELL | – | yes | yes |
| 209-945 | UTILITY TELECOM GROUP, LLC - CA | 2016-03-09 | yes | yes |
| 209-946 | AT&T PACIFIC BELL | – | no | yes |
| 209-948 | AT&T PACIFIC BELL | – | no | yes |
| 209-949 | UTILITY TELECOM GROUP, LLC - CA | 2015-03-02 | yes | yes |
| 209-951 | AT&T PACIFIC BELL | – | no | yes |
| 209-952 | AT&T PACIFIC BELL | – | no | yes |
| 209-953 | AT&T PACIFIC BELL | – | no | yes |
| 209-954 | AT&T PACIFIC BELL | – | yes | yes |
| 209-955 | AT&T PACIFIC BELL | – | yes | yes |
| 209-956 | AT&T PACIFIC BELL | – | no | yes |
| 209-957 | AT&T PACIFIC BELL | – | no | yes |
| 209-981 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 209-982 | AT&T PACIFIC BELL | – | no | yes |
| 209-983 | AT&T PACIFIC BELL | – | yes | yes |
| 209-986 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 209-987 | American Messaging AMERICAN MESSAGING SERVICES, LLC | – | no | yes |
| 209-990 | COMMIO, LLC | 2017-03-24 | yes | yes |
| 209-992 | T-Mobile METROPCS, INC. | – | yes | yes |
| 209-993 | T-Mobile METROPCS, INC. | – | yes | yes |
| 209-995 | American Messaging AMERICAN MESSAGING SERVICES, 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 | 31.2% |
| T-MOBILE USA, INC. | T-Mobile | 14 | 10.1% |
| ONVOY, LLC - CA | Onvoy | 13 | 9.4% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Verizon | 12 | 8.7% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 11 | 8% |
| METROPCS, INC. | T-Mobile | 8 | 5.8% |
| UTILITY TELECOM GROUP, LLC - CA | – | 6 | 4.3% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 3 | 2.2% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 3 | 2.2% |
| AMERICAN MESSAGING SERVICES, LLC | American Messaging | 3 | 2.2% |
| ONVOY SPECTRUM, LLC | Charter | 3 | 2.2% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | Verizon | 2 | 1.4% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 2 | 1.4% |
| NUSO, LLC | – | 2 | 1.4% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | AT&T | 2 | 1.4% |
| COMCAST PHONE OF CALIFORNIA, LLC | Comcast | 2 | 1.4% |
| VONAGE AMERICA LLC | Vonage | 1 | 0.7% |
| CSC WIRELESS, LLC | – | 1 | 0.7% |
| TWILIO INTERNATIONAL, INC. | Twilio | 1 | 0.7% |
| PEERLESS NETWORK OF CALIFORNIA, LLC - CA | Peerless | 1 | 0.7% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 1 | 0.7% |
| IP HORIZON LLC | – | 1 | 0.7% |
| CENTURYLINK COMMUNICATIONS, LLC | Lumen | 1 | 0.7% |
| AT&T ENTERPRISES, LLC | AT&T | 1 | 0.7% |
| COMMIO, LLC | – | 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 STOCKTON in area code 209?
138 blocks: 227, 234, 235, 242, 244, 271, 279, 290, 292, 298, 299, 307 and 126 more, all listed in the table above.
Which carriers have numbers in STOCKTON?
PACIFIC BELL (43 blocks), T-MOBILE USA, INC. (14 blocks), ONVOY, LLC - CA (13 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (12 blocks), NEW CINGULAR WIRELESS PCS, LLC (11 blocks), METROPCS, INC. (8 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is STOCKTON 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.