Prefix Information

The prefix 001 is part of area code 312 serving Chicago, Illinois.

This exchange contains 10,000 possible phone numbers (312-001-0000 through 312-001-9999).

Browse Numbers in This Prefix

312-001-0000-0999 312-001-1000-1999 312-001-2000-2999 312-001-3000-3999 312-001-4000-4999 312-001-5000-5999 312-001-6000-6999 312-001-7000-7999 312-001-8000-8999 312-001-9000-9999

Sample Numbers

(312) 001-0000 (312) 001-1234 (312) 001-2000 (312) 001-3333 (312) 001-4444 (312) 001-5555 (312) 001-6000 (312) 001-7777 (312) 001-8888 (312) 001-9999