Phone numbers in Chino, California
Chino has 63 phone prefixes in area codes 840, 909.
Biggest holders: Frontier, T-Mobile (including Sprint), Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 32%
- Local phone company 25%
- Internet / business phone carrier 43%
Every prefix in Chino
Search the first six digits of a number in this list. If it's here, the number started in Chino with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 840-200 | Fractel | Internet / business phone carrier | 2021 |
| 840-206 | AT&T Mobility | Mobile carrier | 2021 |
| 840-212 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 840-218 | Verizon Wireless | Mobile carrier | 2022 |
| 840-272 | Onvoy | Internet / business phone carrier | 2025 |
| 840-282 | Onvoy | Internet / business phone carrier | 2025 |
| 840-284 | Onvoy | Internet / business phone carrier | 2023 |
| 840-465 | Fractel | Internet / business phone carrier | 2021 |
| 909-203 | T-Mobile (including Sprint) | Mobile carrier | 2007 |
| 909-217 | Verizon Wireless | Mobile carrier | 2008 |
| 909-247 | AT&T Mobility | Mobile carrier | 2007 |
| 909-248 | Onvoy | Internet / business phone carrier | – |
| 909-270 | Verizon Wireless | Mobile carrier | 2009 |
| 909-287 | Tpx Communications | Internet / business phone carrier | – |
| 909-304 | Peerless Network Of California | Internet / business phone carrier | 2012 |
| 909-306 | Peerless Network Of California | Internet / business phone carrier | 2012 |
| 909-308 | Peerless Network Of California | Internet / business phone carrier | 2012 |
| 909-310 | Onvoy | Internet / business phone carrier | 2016 |
| 909-313 | MCImetro (Verizon Business) | Internet / business phone carrier | 2015 |
| 909-315 | Verizon Wireless | Mobile carrier | 2013 |
| 909-325 | Peerless Network Of California | Internet / business phone carrier | 2013 |
| 909-334 | Level 3 (Lumen) | Internet / business phone carrier | 2011 |
| 909-342 | Level 3 (Lumen) | Internet / business phone carrier | 2006 |
| 909-364 | Frontier | Local phone company | – |
| 909-393 | Frontier | Local phone company | – |
| 909-413 | T-Mobile (including Sprint) | Mobile carrier | 2016 |
| 909-438 | Teleport Communications America | Internet / business phone carrier | – |
| 909-464 | Frontier | Local phone company | – |
| 909-465 | Frontier | Local phone company | – |
| 909-479 | Charter / Spectrum | Internet / business phone carrier | 2016 |
| 909-497 | AT&T Mobility | Mobile carrier | 2015 |
| 909-516 | T-Mobile (including Sprint) | Mobile carrier | 2018 |
| 909-517 | Frontier | Local phone company | – |
| 909-529 | Bandwidth | Internet / business phone carrier | 2010 |
| 909-536 | Bandwidth | Internet / business phone carrier | 2014 |
| 909-539 | IP Horizon | Internet / business phone carrier | – |
| 909-548 | Frontier | Local phone company | – |
| 909-573 | Tpx Communications | Internet / business phone carrier | – |
| 909-590 | Frontier | Local phone company | – |
| 909-591 | Frontier | Local phone company | – |
| 909-597 | Frontier | Local phone company | – |
| 909-606 | Frontier | Local phone company | – |
| 909-613 | Frontier | Local phone company | – |
| 909-614 | Frontier | Local phone company | – |
| 909-627 | Frontier | Local phone company | – |
| 909-628 | Frontier | Local phone company | – |
| 909-631 | AT&T (local phone) | Local phone company | – |
| 909-636 | MetroPCS (T-Mobile) | Mobile carrier | 2001 |
| 909-662 | T-Mobile (including Sprint) | Mobile carrier | 2014 |
| 909-664 | Teleport Communications America | Internet / business phone carrier | – |
| 909-668 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 909-680 | AT&T Mobility | Mobile carrier | 2006 |
| 909-696 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 909-703 | Verizon Wireless | Mobile carrier | 2010 |
| 909-840 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 909-858 | Fractel | Internet / business phone carrier | 2019 |
| 909-898 | Bandwidth | Internet / business phone carrier | 2020 |
| 909-902 | Frontier | Local phone company | – |
| 909-903 | Twilio | Internet / business phone carrier | – |
| 909-925 | Bandwidth | Internet / business phone carrier | 2022 |
| 909-927 | MetroPCS (T-Mobile) | Mobile carrier | 2011 |
| 909-970 | Verizon Wireless | Mobile carrier | 2021 |
| 909-993 | Level 3 (Lumen) | Internet / business phone carrier | – |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.