Prefix Information

The prefix 312 is part of area code 240 serving Germantown, Maryland.

This exchange contains 10,000 possible phone numbers (240-312-0000 through 240-312-9999).

Browse Numbers in This Prefix

240-312-0000-0999 240-312-1000-1999 240-312-2000-2999 240-312-3000-3999 240-312-4000-4999 240-312-5000-5999 240-312-6000-6999 240-312-7000-7999 240-312-8000-8999 240-312-9000-9999

Sample Numbers

(240) 312-0000 (240) 312-1234 (240) 312-2000 (240) 312-3333 (240) 312-4444 (240) 312-5555 (240) 312-6000 (240) 312-7777 (240) 312-8888 (240) 312-9999