Phone numbers in El Monte, California
El Monte has 88 phone prefixes in area code 626.
Biggest holders: AT&T (local phone), AT&T Mobility, T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Local phone company 31%
- Internet / business phone carrier 31%
- Paging service 3%
- Phone company 2%
Every prefix in El Monte
Search the first six digits of a number in this list. If it's here, the number started in El Monte with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 626-213 | Onvoy | Internet / business phone carrier | – |
| 626-228 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 626-242 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 626-245 | Spok | Paging service | – |
| 626-246 | Tpx Communications | Internet / business phone carrier | – |
| 626-258 | AT&T (local phone) | Local phone company | – |
| 626-274 | AT&T Mobility | Mobile carrier | – |
| 626-277 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 626-279 | AT&T (local phone) | Local phone company | – |
| 626-315 | AT&T (local phone) | Local phone company | 2002 |
| 626-329 | AT&T (local phone) | Local phone company | – |
| 626-350 | AT&T (local phone) | Local phone company | – |
| 626-361 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 626-374 | AT&T Mobility | Mobile carrier | – |
| 626-377 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 626-378 | AT&T Mobility | Mobile carrier | – |
| 626-401 | AT&T (local phone) | Local phone company | – |
| 626-402 | AT&T (local phone) | Local phone company | – |
| 626-406 | AT&T Mobility | Mobile carrier | 2017 |
| 626-409 | MetroPCS (T-Mobile) | Mobile carrier | 2007 |
| 626-416 | Verizon Wireless | Mobile carrier | – |
| 626-423 | Verizon Wireless | Mobile carrier | – |
| 626-433 | AT&T (local phone) | Local phone company | – |
| 626-434 | Teleport Communications America | Internet / business phone carrier | – |
| 626-436 | AT&T (local phone) | Local phone company | – |
| 626-442 | AT&T (local phone) | Local phone company | – |
| 626-443 | AT&T (local phone) | Local phone company | – |
| 626-444 | AT&T (local phone) | Local phone company | – |
| 626-448 | AT&T (local phone) | Local phone company | – |
| 626-450 | AT&T (local phone) | Local phone company | – |
| 626-452 | AT&T (local phone) | Local phone company | – |
| 626-453 | AT&T (local phone) | Local phone company | – |
| 626-454 | AT&T (local phone) | Local phone company | – |
| 626-455 | AT&T (local phone) | Local phone company | – |
| 626-456 | AT&T (local phone) | Local phone company | – |
| 626-459 | AT&T (local phone) | Local phone company | – |
| 626-475 | AT&T Mobility | Mobile carrier | – |
| 626-478 | T-Mobile (including Sprint) | Mobile carrier | – |
| 626-481 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 626-489 | MetroPCS (T-Mobile) | Mobile carrier | 2018 |
| 626-490 | Utility Telecom Group | Phone company | – |
| 626-501 | MetroPCS (T-Mobile) | Mobile carrier | 2019 |
| 626-512 | AT&T Mobility | Mobile carrier | – |
| 626-518 | AT&T (local phone) | Local phone company | – |
| 626-522 | Charter / Spectrum | Internet / business phone carrier | 2014 |
| 626-527 | AT&T (local phone) | Local phone company | – |
| 626-532 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 626-534 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 626-539 | MetroPCS (T-Mobile) | Mobile carrier | 2008 |
| 626-542 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 626-547 | AT&T Mobility | Mobile carrier | 2020 |
| 626-552 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 626-575 | AT&T (local phone) | Local phone company | – |
| 626-579 | AT&T (local phone) | Local phone company | – |
| 626-580 | AT&T (local phone) | Local phone company | – |
| 626-582 | AT&T (local phone) | Local phone company | – |
| 626-589 | AT&T Mobility | Mobile carrier | – |
| 626-596 | Bandwidth | Internet / business phone carrier | 2021 |
| 626-602 | Onvoy | Internet / business phone carrier | – |
| 626-617 | AT&T Mobility | Mobile carrier | – |
| 626-618 | Tpx Communications | Internet / business phone carrier | – |
| 626-636 | Tpx Communications | Internet / business phone carrier | – |
| 626-641 | AT&T Mobility | Mobile carrier | – |
| 626-643 | AT&T Mobility | Mobile carrier | – |
| 626-652 | AT&T (local phone) | Local phone company | – |
| 626-669 | Fractel | Internet / business phone carrier | 2020 |
| 626-672 | Verizon Wireless | Mobile carrier | – |
| 626-674 | AT&T Mobility | Mobile carrier | – |
| 626-675 | AT&T Mobility | Mobile carrier | – |
| 626-680 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 626-681 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 626-686 | Fractel | Internet / business phone carrier | 2020 |
| 626-719 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 626-728 | American Messaging Services | Paging service | – |
| 626-729 | Spok | Paging service | – |
| 626-747 | Bandwidth | Internet / business phone carrier | – |
| 626-758 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 626-762 | Onvoy | Internet / business phone carrier | 2022 |
| 626-774 | Tpx Communications | Internet / business phone carrier | – |
| 626-780 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 626-809 | AT&T Mobility | Mobile carrier | 2024 |
| 626-816 | Fractel | Internet / business phone carrier | 2021 |
| 626-819 | Verizon Wireless | Mobile carrier | 2025 |
| 626-835 | Onvoy | Internet / business phone carrier | 2025 |
| 626-867 | Utility Telecom Group | Phone company | – |
| 626-877 | Peerless Network Of California | Internet / business phone carrier | 2016 |
| 626-941 | Tpx Communications | Internet / business phone carrier | – |
| 626-978 | 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.