858 Area Code — San Diego, California

Area code 858 serves San Diego, CA.

Most looked-up 858 numbers

• 858-251-3727
• 858-955-7363
• 858-335-7677
• 858-461-7110
• 858-336-3669
• 858-879-6368

Phone prefixes in 858

• 858-335
• 858-461
• 858-955
• 858-251
• 858-336
• 858-879

Carriers serving 858

• Verizon (1 numbers)
• Bandwidth (1 numbers)
• At&t (1 numbers)
• Twilio (1 numbers)
• Peerless Network Of California (1 numbers)
• Onvoy, LLC - CA (1 numbers)

Frequently asked questions

Where is area code 858?

Area code 858 serves San Diego, CA.

What prefixes are in area code 858?

Phone2.io tracks 6 phone prefixes in area code 858, with carrier and spam-report data on individual numbers.

More about area code 858

Area code 858 overview, history, and local numbers · Get a CA phone number

Last updated: April 10, 2026