Search

Enter 10 Digit Phone Number
phone

Phone Directory 312-870 Detail

State Major City Time Zone
Illinois Chicago Central

Search

Find info about any number instantly!
Enter a 10 digit phone number
Example: (312) 870-5555 or 2012145555

Advertisement

Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-870 Chicago, IL First Communications LLC Cook Landline 07/06/1997

Other Series For Prefixes

312-8700###
312-8701###
312-8702###
312-8703###
312-8704###
312-8705###
312-8706###
312-8707###
312-8708###
312-8709###