Exchange · Caldwell, NJ
(973) 840-xxxx
Every number from 973-840-0000 to 973-840-9999. NANPA records the exchange as assigned to Lumen (Level 3) for Caldwell, NJ. 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 973-840
About the 973-840 exchange
973-840 is an exchange (the first six digits of a phone number) in area code 973, which covers New Jersey. NANPA, which runs the North American Numbering Plan, assigned it to Lumen (Level 3) for the Caldwell, NJ rate center. Numbers from this carrier are usually VoIP / internet phone 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 973-840 numbers is usually Eastern time. Scammers can also fake (spoof) any number, so a call that shows a 973-840 number may not come from Lumen (Level 3) at all.