Exchange · Maryland
(443) 637-xxxx
Every number from 443-637-0000 to 443-637-9999. NANPA records the exchange as assigned to Verizon Business for Maryland in 2001. 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 443-637
| Number | Verdict | What it is | Reports | Complaints |
|---|---|---|---|---|
| (443) 637-9571 | Caution | Robocall / recorded message | 0 | 3 |
About the 443-637 exchange
443-637 is an exchange (the first six digits of a phone number) in area code 443, which covers Maryland. NANPA, which runs the North American Numbering Plan, assigned it to Verizon Business for the Maryland rate center in 2001. 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 443-637 numbers is usually Eastern time. Scammers can also fake (spoof) any number, so a call that shows a 443-637 number may not come from Verizon Business at all.