There are 516 phone number prefixes within area code 858. Additionally, there are more than 1,100 phone numbers in this area code that have received at least one user report. The location of calls from area code 858 is California, USA. Most numbers in this area code are in US Pacific time, where the time is currently 12:37:49 AM on July 12, 2026.
Choose a phone number from the list below to browse user reports for . You can also use the search box above to search for user reports about any phone number, or to file a report about any phone number.
| Prefix | City / State | Primary Telco |
|---|---|---|
| 858-951 | Rancho Santa Fe, CA | Global Crossing Local Services, Inc. - Ca |
| 858-952 | La Jolla, CA | Level 3 Communications, Llc - Ca |
| 858-955 | Pine Valley, CA | Fractel, Llc |
| 858-956 | Poway, CA | Matrix Telecom, Llc. S/i/i Tnci - Ca |
| 858-958 | California | |
| 858-959 | California | |
| 858-964 | La Jolla, CA | Paetec Communications, Inc. - Ca |
| 858-966 | San Diego:linda Vista Da, CA | Pacific Bell |
| 858-967 | La Jolla, CA | Sprint Spectrum, L.p. |
| 858-974 | San Diego:linda Vista Da, CA | Pacific Bell |
| 858-976 | California | |
| 858-977 | Del Mar, CA | Fractel, Llc |
| 858-987 | San Diego:linda Vista Da, CA | Onvoy, Llc - Ca |
| 858-988 | San Diego:san Diego Da, CA | Fractel, Llc |
| 858-997 | La Jolla, CA | Cellco Partnership Dba Verizon Wireless - Ca |
| 858-999 | La Jolla, CA | Onvoy, Llc - Ca |
June 11, 2026