Phone numbers in Highland, California
Highland has 25 phone prefixes in area codes 840, 909.
Biggest holders: Verizon Wireless, AT&T (local phone), T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 48%
- Local phone company 20%
- Internet / business phone carrier 28%
- Phone company 4%
Every prefix in Highland
Search the first six digits of a number in this list. If it's here, the number started in Highland with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 840-215 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 840-247 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 840-258 | Verizon Wireless | Mobile carrier | 2024 |
| 840-899 | Fractel | Internet / business phone carrier | 2021 |
| 840-998 | Verizon Wireless | Mobile carrier | 2026 |
| 909-280 | Bandwidth | Internet / business phone carrier | 2010 |
| 909-359 | Bandwidth | Internet / business phone carrier | – |
| 909-362 | T-Mobile (including Sprint) | Mobile carrier | – |
| 909-425 | AT&T (local phone) | Local phone company | – |
| 909-633 | Verizon Wireless | Mobile carrier | – |
| 909-647 | IP Horizon | Internet / business phone carrier | – |
| 909-649 | AT&T (local phone) | Local phone company | 2001 |
| 909-672 | AT&T Enterprises | Phone company | 2014 |
| 909-725 | Verizon Wireless | Mobile carrier | 2002 |
| 909-737 | AT&T Mobility | Mobile carrier | 2015 |
| 909-742 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 909-759 | 33 Wireless | Mobile carrier | – |
| 909-834 | Bandwidth | Internet / business phone carrier | 2020 |
| 909-838 | Verizon Wireless | Mobile carrier | – |
| 909-855 | Verizon Wireless | Mobile carrier | – |
| 909-862 | AT&T (local phone) | Local phone company | – |
| 909-863 | AT&T (local phone) | Local phone company | – |
| 909-864 | AT&T (local phone) | Local phone company | – |
| 909-907 | MCImetro (Verizon Business) | Internet / business phone carrier | 2005 |
| 909-936 | Verizon Wireless | Mobile carrier | 2001 |
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.