Prefix Information

The prefix 311 is part of area code 443 serving Baltimore, Maryland.

This exchange contains 10,000 possible phone numbers (443-311-0000 through 443-311-9999).

Browse Numbers in This Prefix

443-311-0000-0999 443-311-1000-1999 443-311-2000-2999 443-311-3000-3999 443-311-4000-4999 443-311-5000-5999 443-311-6000-6999 443-311-7000-7999 443-311-8000-8999 443-311-9000-9999

Sample Numbers

(443) 311-0000 (443) 311-1234 (443) 311-2000 (443) 311-3333 (443) 311-4444 (443) 311-5555 (443) 311-6000 (443) 311-7777 (443) 311-8888 (443) 311-9999