Exchange · California
(858) 400-xxxx
Every number from 858-400-0000 to 858-400-9999. NANPA records the exchange as assigned to Tpx Communications for California. Robocall and scam operations often use many numbers from one exchange, so if one number here is a shady call, its neighbors deserve a second look.
Reported numbers starting 858-400
About the 858-400 exchange
858-400 is an exchange (the first six digits of a phone number) in area code 858, which covers California. NANPA, which runs the North American Numbering Plan, assigned it to Tpx Communications for the California rate center. Numbers from this carrier are usually landline lines.
People keep their number when they move or switch carrier, so this is where the number was first assigned, not where the caller is today. Local time for 858-400 numbers is usually Pacific time. Scammers can also fake (spoof) any number, so a call that shows a 858-400 number may not come from Tpx Communications at all.