Prefix Information

The prefix 638 is part of area code 443 serving Baltimore, Maryland.

This exchange contains 10,000 possible phone numbers (443-638-0000 through 443-638-9999).

Browse Numbers in This Prefix

443-638-0000-0999 443-638-1000-1999 443-638-2000-2999 443-638-3000-3999 443-638-4000-4999 443-638-5000-5999 443-638-6000-6999 443-638-7000-7999 443-638-8000-8999 443-638-9000-9999

Sample Numbers

(443) 638-0000 (443) 638-1234 (443) 638-2000 (443) 638-3333 (443) 638-4444 (443) 638-5555 (443) 638-6000 (443) 638-7777 (443) 638-8888 (443) 638-9999