Exchange · Manitowoc, WI
(920) 663-xxxx
Every number from 920-663-0000 to 920-663-9999. NANPA records the exchange as assigned to AT&T for Manitowoc, WI. 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 920-663
About the 920-663 exchange
920-663 is an exchange (the first six digits of a phone number) in area code 920, which covers Wisconsin. NANPA, which runs the North American Numbering Plan, assigned it to AT&T for the Manitowoc, WI 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 920-663 numbers is usually Central time. Scammers can also fake (spoof) any number, so a call that shows a 920-663 number may not come from AT&T at all.