Phone number reference · United States
858 area code
San Diego and its combined 619/858 numbering region.
858 shares a numbering region with 619 following the removal of their former geographic boundary. Businesses may still recognize 858 as a familiar San Diego prefix, but it is not an accurate filter for a specific neighborhood. Northern county communities may instead be in the 760/442 region.
San Diego metropolitan area
Geographic code · In service
858 at a glance
- Region
- San Diego metropolitan area
- Time zone
- Pacific Time
- In service since
- 12-Jun-1999
- Overlay arrangement
- 619/858
Numbering details checked September 21, 2026 against the NANPA database. See the official area-code maps for boundaries.
Questions about 858
How does 858 differ from 760 and 442?
858 shares the 619 region. 760 and 442 form a different, much larger numbering region that includes parts of northern San Diego County and other California communities.
Is a 858 call safe to answer?
The 858 prefix identifies a numbering region, not a caller's identity or trustworthiness. Verify an unexpected request by contacting the organization through a number you already know.
Can I get a 858 business number?
Search the available numbers in VeraDial. Inventory changes, so a 858 number is not guaranteed. You can also keep your current carrier number and forward voice calls to a VeraDial line; existing texts stay with your carrier.
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