Phone numbers in El Cajon, California
El Cajon has 103 phone prefixes in area codes 619, 858.
Biggest holders: AT&T (local phone), AT&T Mobility, Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 39%
- Local phone company 20%
- Internet / business phone carrier 40%
- Paging service 1%
Every prefix in El Cajon
Search the first six digits of a number in this list. If it's here, the number started in El Cajon with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 619-201 | MetroPCS (T-Mobile) | Mobile carrier | 2007 |
| 619-212 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 619-219 | Teleport Communications America | Internet / business phone carrier | – |
| 619-244 | AT&T Mobility | Mobile carrier | – |
| 619-249 | T-Mobile (including Sprint) | Mobile carrier | – |
| 619-258 | AT&T (local phone) | Local phone company | – |
| 619-270 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 619-277 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 619-312 | Comcast | Internet / business phone carrier | – |
| 619-322 | Verizon Wireless | Mobile carrier | – |
| 619-328 | Comcast | Internet / business phone carrier | – |
| 619-332 | AT&T Mobility | Mobile carrier | 2015 |
| 619-333 | Bandwidth | Internet / business phone carrier | – |
| 619-334 | Comcast | Internet / business phone carrier | – |
| 619-357 | Level 3 (Lumen) | Internet / business phone carrier | 2011 |
| 619-360 | American Messaging Services | Paging service | – |
| 619-368 | T-Mobile (including Sprint) | Mobile carrier | – |
| 619-375 | Bandwidth | Internet / business phone carrier | – |
| 619-383 | CenturyLink / Lumen | Local phone company | 2013 |
| 619-387 | Tpx Communications | Internet / business phone carrier | – |
| 619-390 | AT&T (local phone) | Local phone company | – |
| 619-396 | Verizon Wireless | Mobile carrier | 2014 |
| 619-401 | AT&T (local phone) | Local phone company | – |
| 619-402 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 619-404 | T-Mobile (including Sprint) | Mobile carrier | 2016 |
| 619-438 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 619-440 | AT&T (local phone) | Local phone company | – |
| 619-441 | AT&T (local phone) | Local phone company | – |
| 619-442 | AT&T (local phone) | Local phone company | – |
| 619-443 | AT&T (local phone) | Local phone company | – |
| 619-444 | AT&T (local phone) | Local phone company | – |
| 619-447 | AT&T (local phone) | Local phone company | – |
| 619-448 | AT&T (local phone) | Local phone company | – |
| 619-449 | AT&T (local phone) | Local phone company | – |
| 619-456 | Comcast | Internet / business phone carrier | – |
| 619-457 | AT&T Mobility | Mobile carrier | 2014 |
| 619-486 | Level 3 (Lumen) | Internet / business phone carrier | 2015 |
| 619-493 | Bandwidth | Internet / business phone carrier | 2014 |
| 619-499 | Comcast | Internet / business phone carrier | – |
| 619-504 | AT&T Mobility | Mobile carrier | – |
| 619-509 | AT&T Mobility | Mobile carrier | 2020 |
| 619-536 | AT&T Mobility | Mobile carrier | 2014 |
| 619-558 | T-Mobile (including Sprint) | Mobile carrier | 2016 |
| 619-561 | AT&T (local phone) | Local phone company | – |
| 619-562 | AT&T (local phone) | Local phone company | – |
| 619-569 | T-Mobile (including Sprint) | Mobile carrier | 2007 |
| 619-579 | AT&T (local phone) | Local phone company | – |
| 619-588 | AT&T (local phone) | Local phone company | – |
| 619-590 | AT&T (local phone) | Local phone company | – |
| 619-592 | Verizon Wireless | Mobile carrier | 2008 |
| 619-593 | AT&T (local phone) | Local phone company | – |
| 619-596 | AT&T (local phone) | Local phone company | – |
| 619-599 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 619-626 | Onvoy | Internet / business phone carrier | 2021 |
| 619-627 | Bandwidth | Internet / business phone carrier | 2015 |
| 619-631 | Tpx Communications | Internet / business phone carrier | – |
| 619-633 | AT&T Mobility | Mobile carrier | 2010 |
| 619-635 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 619-647 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 619-654 | MetroPCS (T-Mobile) | Mobile carrier | 2001 |
| 619-655 | AT&T Mobility | Mobile carrier | 2008 |
| 619-663 | Bandwidth | Internet / business phone carrier | 2008 |
| 619-672 | Verizon Wireless | Mobile carrier | 2002 |
| 619-689 | AT&T Mobility | Mobile carrier | 2020 |
| 619-715 | AT&T Mobility | Mobile carrier | 2006 |
| 619-716 | T-Mobile (including Sprint) | Mobile carrier | 2020 |
| 619-728 | Onvoy | Internet / business phone carrier | 2014 |
| 619-729 | AT&T Mobility | Mobile carrier | 2001 |
| 619-733 | Verizon Wireless | Mobile carrier | – |
| 619-749 | Comcast | Internet / business phone carrier | – |
| 619-760 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 619-768 | Onvoy | Internet / business phone carrier | – |
| 619-792 | Verizon Wireless | Mobile carrier | 2006 |
| 619-820 | Verizon Wireless | Mobile carrier | – |
| 619-834 | AT&T Mobility | Mobile carrier | 2020 |
| 619-873 | Tpx Communications | Internet / business phone carrier | – |
| 619-875 | AT&T Mobility | Mobile carrier | 2020 |
| 619-891 | AT&T Mobility | Mobile carrier | 2020 |
| 619-901 | AT&T Mobility | Mobile carrier | 2020 |
| 619-903 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 619-905 | AT&T Mobility | Mobile carrier | 2006 |
| 619-912 | Onvoy | Internet / business phone carrier | 2024 |
| 619-922 | Verizon Wireless | Mobile carrier | – |
| 619-933 | Verizon Wireless | Mobile carrier | – |
| 619-937 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 619-938 | AT&T (local phone) | Local phone company | – |
| 619-956 | AT&T (local phone) | Local phone company | – |
| 619-966 | Onvoy | Internet / business phone carrier | – |
| 619-971 | Verizon Wireless | Mobile carrier | – |
| 858-238 | AT&T Mobility | Mobile carrier | 2020 |
| 858-301 | Vonage America | Internet / business phone carrier | 2020 |
| 858-339 | Verizon Wireless | Mobile carrier | 2022 |
| 858-358 | Onvoy | Internet / business phone carrier | 2020 |
| 858-379 | Bandwidth | Internet / business phone carrier | 2022 |
| 858-388 | Fractel | Internet / business phone carrier | 2019 |
| 858-424 | Onvoy | Internet / business phone carrier | 2023 |
| 858-426 | Onvoy | Internet / business phone carrier | 2025 |
| 858-441 | Onvoy | Internet / business phone carrier | 2025 |
| 858-460 | Onvoy | Internet / business phone carrier | 2026 |
| 858-758 | Fractel | Internet / business phone carrier | 2020 |
| 858-844 | Fractel | Internet / business phone carrier | 2021 |
| 858-855 | Fractel | Internet / business phone carrier | 2021 |
| 858-899 | Fractel | Internet / business phone carrier | 2021 |
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.