Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
ONTARIO prefixes in area code 909
NANPA records 124 assigned NXX blocks to rate center ONTARIO in area code 909, 15.8% of the 786 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. 27 holders hold those blocks, the largest being FRONTIER CALIFORNIA INC. (21), NEW CINGULAR WIRELESS PCS, LLC (20), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (20). The earliest assignment on record here is 2001-04-19 and the most recent 2019-10-25. 70 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 315, 458, 541, 608 – overlay codes cover the same geography, so a rate center is served by all of them.
124 assigned blocks – 15.8% of 909
27 holders of record
70 of them pooled in 1,000-number lots
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 909-208 | T-Mobile METROPCS NETWORKS, LLC | – | yes | yes |
| 909-210 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 909-212 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 2007-03-05 | yes | yes |
| 909-214 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-04-19 | no | yes |
| 909-215 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-04-19 | no | yes |
| 909-218 | Charter TWC IP ENABLED SERVICES, LLC | 2007-06-05 | yes | yes |
| 909-223 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-04-19 | no | yes |
| 909-224 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-04-19 | no | yes |
| 909-225 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-04-19 | no | yes |
| 909-226 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-04-19 | no | yes |
| 909-227 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-04-19 | no | yes |
| 909-228 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-04-19 | no | yes |
| 909-229 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 909-230 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 909-234 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-04-19 | no | yes |
| 909-235 | T-Mobile METROPCS NETWORKS, LLC | 2007-03-21 | yes | yes |
| 909-238 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 909-239 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 909-240 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 909-241 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 909-249 | Spok SPOK, INC. | – | no | yes |
| 909-259 | Peerless PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 2009-01-06 | yes | yes |
| 909-260 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 909-261 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 909-262 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 909-268 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 909-284 | T-Mobile METROPCS NETWORKS, LLC | 2010-09-28 | yes | yes |
| 909-286 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-04-30 | no | yes |
| 909-292 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 909-295 | T-Mobile METROPCS NETWORKS, LLC | 2011-03-18 | yes | yes |
| 909-309 | Spok SPOK, INC. | – | no | yes |
| 909-319 | T-Mobile T-MOBILE USA, INC. | 2002-08-01 | no | yes |
| 909-321 | Lumen CENTURYLINK COMMUNICATIONS, LLC | – | yes | yes |
| 909-322 | T-Mobile METROPCS NETWORKS, LLC | – | yes | yes |
| 909-331 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC | – | yes | yes |
| 909-354 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2005-01-17 | yes | yes |
| 909-376 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 909-390 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-391 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-395 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 909-400 | UTILITY TELECOM GROUP, LLC - CA | – | no | yes |
| 909-405 | Spok SPOK, INC. | – | no | yes |
| 909-408 | T-Mobile METROPCS NETWORKS, LLC | 2017-07-28 | yes | yes |
| 909-418 | AT&T PACIFIC BELL (COMPETITIVE) | – | yes | yes |
| 909-437 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 909-443 | Onvoy ONVOY, LLC - CA | – | yes | yes |
| 909-456 | Lumen LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | – | yes | yes |
| 909-457 | UTILITY TELECOM GROUP, LLC - CA | – | no | yes |
| 909-458 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 909-459 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 909-460 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 909-467 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 909-472 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA | – | yes | yes |
| 909-489 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 909-490 | T-Mobile T-MOBILE USA, INC. | 2016-06-17 | yes | yes |
| 909-509 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2006-01-26 | yes | yes |
| 909-510 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 909-518 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 909-519 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 909-544 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2006-09-13 | yes | yes |
| 909-545 | T-Mobile METROPCS NETWORKS, LLC | 2009-03-10 | yes | yes |
| 909-563 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | – | yes | yes |
| 909-564 | American Messaging AMERICAN MESSAGING SERVICES, LLC | – | no | yes |
| 909-604 | American Messaging AMERICAN MESSAGING SERVICES, LLC | – | no | yes |
| 909-605 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 909-615 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-04-19 | no | yes |
| 909-635 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | – | yes | yes |
| 909-638 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | yes | yes |
| 909-657 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 909-661 | NORTH COUNTY COMMUNICATION CORPORATION - CA | – | no | yes |
| 909-669 | SHELCOMM | – | no | yes |
| 909-673 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-678 | T-Mobile METROPCS NETWORKS, LLC | 2014-12-23 | yes | yes |
| 909-687 | T-Mobile T-MOBILE USA, INC. | 2015-04-01 | yes | yes |
| 909-702 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 909-704 | T-Mobile METROPCS NETWORKS, LLC | 2018-10-15 | yes | yes |
| 909-717 | T-Mobile METROPCS NETWORKS, LLC | – | yes | yes |
| 909-721 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 909-724 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 909-730 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 909-731 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 909-732 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 909-738 | T-Mobile METROPCS NETWORKS, LLC | 2017-02-10 | yes | yes |
| 909-740 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | – | yes | yes |
| 909-750 | TPx U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 2016-07-22 | yes | yes |
| 909-757 | Onvoy ONVOY, LLC - CA | 2016-02-09 | yes | yes |
| 909-772 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 909-773 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 909-778 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2019-10-25 | yes | yes |
| 909-781 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 2006-06-16 | yes | yes |
| 909-786 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | 2005-06-30 | yes | yes |
| 909-789 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2017-12-14 | yes | yes |
| 909-813 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2019-10-25 | yes | yes |
| 909-815 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 909-816 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 909-821 | T-Mobile METROPCS NETWORKS, LLC | 2001-06-26 | yes | yes |
| 909-842 | 33 WIRELESS INC. | – | no | yes |
| 909-843 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | – | yes | yes |
| 909-850 | SKYE TELECOM LLC DBA SKYETEL | – | yes | yes |
| 909-851 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 909-906 | Bandwidth BANDWIDTH.COM CLEC, LLC - CA | 2013-10-08 | yes | yes |
| 909-917 | T-Mobile METROPCS NETWORKS, LLC | 2002-04-16 | yes | yes |
| 909-923 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-930 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-933 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 909-934 | 33 WIRELESS INC. | – | no | yes |
| 909-935 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | – | yes | yes |
| 909-937 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 909-938 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 909-947 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-952 | T-Mobile METROPCS NETWORKS, LLC | 2001-08-22 | yes | yes |
| 909-957 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | – | no | yes |
| 909-966 | FRACTEL, LLC | 2019-01-25 | yes | yes |
| 909-969 | AT&T AT&T - LOCAL | – | yes | yes |
| 909-972 | Lumen LEVEL 3 COMMUNICATIONS, LLC - CA | – | yes | yes |
| 909-974 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 909-975 | Frontier FRONTIER CALIFORNIA INC. | – | yes | yes |
| 909-983 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-984 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-986 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-988 | Frontier FRONTIER CALIFORNIA INC. | – | no | yes |
| 909-994 | T-Mobile METROPCS NETWORKS, LLC | – | yes | yes |
| 909-995 | UTILITY TELECOM GROUP, LLC - CA | – | yes | yes |
| 909-996 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-04-30 | 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 |
|---|---|---|---|
| FRONTIER CALIFORNIA INC. | Frontier | 21 | 16.9% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 20 | 16.1% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | Verizon | 20 | 16.1% |
| METROPCS NETWORKS, LLC | T-Mobile | 15 | 12.1% |
| T-MOBILE USA, INC. | T-Mobile | 9 | 7.3% |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | TPx | 5 | 4% |
| MATRIX TELECOM, LLC. S/I/I TNCI - CA | – | 4 | 3.2% |
| LEVEL 3 COMMUNICATIONS, LLC - CA | Lumen | 4 | 3.2% |
| SPOK, INC. | Spok | 3 | 2.4% |
| UTILITY TELECOM GROUP, LLC - CA | – | 3 | 2.4% |
| ONVOY, LLC - CA | Onvoy | 2 | 1.6% |
| AMERICAN MESSAGING SERVICES, LLC | American Messaging | 2 | 1.6% |
| 33 WIRELESS INC. | – | 2 | 1.6% |
| TWC IP ENABLED SERVICES, LLC | Charter | 1 | 0.8% |
| PEERLESS NETWORK OF CALIFORNIA, LLC - CA | Peerless | 1 | 0.8% |
| CENTURYLINK COMMUNICATIONS, LLC | Lumen | 1 | 0.8% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 1 | 0.8% |
| PACIFIC BELL (COMPETITIVE) | AT&T | 1 | 0.8% |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | Lumen | 1 | 0.8% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | AT&T | 1 | 0.8% |
| PAETEC ITEL, LLC | Windstream | 1 | 0.8% |
| NORTH COUNTY COMMUNICATION CORPORATION - CA | – | 1 | 0.8% |
| SHELCOMM | – | 1 | 0.8% |
| SKYE TELECOM LLC DBA SKYETEL | – | 1 | 0.8% |
| BANDWIDTH.COM CLEC, LLC - CA | Bandwidth | 1 | 0.8% |
| FRACTEL, LLC | – | 1 | 0.8% |
| AT&T - LOCAL | AT&T | 1 | 0.8% |
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 ONTARIO in area code 909?
124 blocks: 208, 210, 212, 214, 215, 218, 223, 224, 225, 226, 227, 228 and 112 more, all listed in the table above.
Which carriers have numbers in ONTARIO?
FRONTIER CALIFORNIA INC. (21 blocks), NEW CINGULAR WIRELESS PCS, LLC (20 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (20 blocks), METROPCS NETWORKS, LLC (15 blocks), T-MOBILE USA, INC. (9 blocks), U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (5 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is ONTARIO 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.