Prefix Information

The prefix 312 is part of area code 857 serving Boston, Massachusetts.

This exchange contains 10,000 possible phone numbers (857-312-0000 through 857-312-9999).

Browse Numbers in This Prefix

857-312-0000-0999 857-312-1000-1999 857-312-2000-2999 857-312-3000-3999 857-312-4000-4999 857-312-5000-5999 857-312-6000-6999 857-312-7000-7999 857-312-8000-8999 857-312-9000-9999

Sample Numbers

(857) 312-0000 (857) 312-1234 (857) 312-2000 (857) 312-3333 (857) 312-4444 (857) 312-5555 (857) 312-6000 (857) 312-7777 (857) 312-8888 (857) 312-9999