Exchange · Redwood City, CA
(650) 503-xxxx
Every number from 650-503-0000 to 650-503-9999. NANPA records the exchange as assigned to Tpx Communications for Redwood City, CA. 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 650-503
| Number | Verdict | What it is | Reports | Complaints |
|---|---|---|---|---|
| (650) 503-4700 | Caution | Health insurance / Medicare | 0 | 3 |
About the 650-503 exchange
650-503 is an exchange (the first six digits of a phone number) in area code 650, which covers California. NANPA, which runs the North American Numbering Plan, assigned it to Tpx Communications for the Redwood City, CA 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 650-503 numbers is usually Pacific time. Scammers can also fake (spoof) any number, so a call that shows a 650-503 number may not come from Tpx Communications at all.