Prefix Information

The prefix 550 is part of area code 443 serving Baltimore, Maryland.

This exchange contains 10,000 possible phone numbers (443-550-0000 through 443-550-9999).

Browse Numbers in This Prefix

443-550-0000-0999 443-550-1000-1999 443-550-2000-2999 443-550-3000-3999 443-550-4000-4999 443-550-5000-5999 443-550-6000-6999 443-550-7000-7999 443-550-8000-8999 443-550-9000-9999

Sample Numbers

(443) 550-0000 (443) 550-1234 (443) 550-2000 (443) 550-3333 (443) 550-4444 (443) 550-5555 (443) 550-6000 (443) 550-7777 (443) 550-8888 (443) 550-9999