The 858 area code covers San Diego, La Jolla, Poway and more in California. Provision a local 858 number in minutes.
Area code 858 covers the northern portion of San Diego including La Jolla, home of the UC San Diego campus and the Scripps Institution of Oceanography. La Jolla has one of the highest concentrations of biotech and pharmaceutical research in the world. The Sorrento Valley biotech corridor along I-805 is a critical hub for life sciences innovation. The code was split from 619 in 1999.
The 858 area code covers San Diego, La Jolla, Poway, Rancho Bernardo in California.
Phone numbers in the 858 area code operate on America/Los_Angeles time.
Yes. The 858 area code was introduced in 1999 and remains an active geographic code today.
Yes. Ajoxi provisions virtual 858 numbers with instant activation, clean caller-ID delivery, Tier-1 routing, and no setup fees — so you can build a local presence in minutes.
Provision a 858 number with instant activation, clean caller-ID, and Tier-1 routing — no setup fees, live in minutes.