🇺🇸 United States · California

Area code 858

Area code 858 is a telephone area code in California, United States, covering San Diego, La Jolla, Poway, Rancho Santa Fe. Local time is UTC−8 (UTC−7 in summer). Numbers look like (858) 234-5678, or +1 858 234 5678 from abroad.

State: California
Time zone: Los Angeles UTC−8 (UTC−7 in summer)
Local time now: –
Dial from abroad: +1 858

Places in area code 858

Cities and towns with telephone exchanges in the 858 area code, most exchanges first.

San Diego
La Jolla
Poway
Rancho Santa Fe

How to dial area code 858

Calling from	You dial
Inside the 858 area	858 234 5678 (10 digits)
Elsewhere in the US & Canada	1 858 234 5678
Any mobile phone, anywhere	+1 858 234 5678
UK, Europe, India and most countries	00 1 858 234 5678
Australia	0011 1 858 234 5678

Other area codes in California

Area code 858: FAQ

Where is area code 858?

Area code 858 is in California, United States and serves San Diego, La Jolla, Poway, Rancho Santa Fe.

What time zone is area code 858 in?

Area code 858 is in the America/Los_Angeles time zone (UTC−8 (UTC−7 in summer)).

How do I call a 858 number from outside the US and Canada?

Dial your exit code (00 in most countries, or + on a mobile), then 1, then 858 and the seven-digit number. Example: +1 858 234 5678.

Is a call from area code 858 a scam?

Area code 858 is a regular North American area code, but caller ID can be spoofed: scammers often show local-looking numbers. Do not call back unknown numbers that ask for money or personal data, and check the number with the phone number validator to see whether it is valid and whether it is a mobile, landline or VoIP number.

Phone number API

Check 858 numbers in your app

numlookupapi checks any phone number worldwide in one request and returns validity, line type, carrier, location and every standard format as JSON.

Read the documentation

100 free requests every month. No credit card required.

GET https://api.numlookupapi.com/v1/validate/+18582345678

{
  "valid": true,
  "number": "12069220880",
  "local_format": "2069220880",
  "international_format": "+12069220880",
  "country_prefix": "+1",
  "country_code": "US",
  "country_name": "United States of America",
  "location": "Seattle",
  "line_type": "landline",
  "e164_format": "+12069220880",
  "national_format": "(206) 922-0880"
}