NPA
NXX
CLLI
City, ST
Telco
312
236
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
346
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
364
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
372
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
456
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
462
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
507
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
551
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
580
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
652
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
693
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
704
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
737
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
762
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
782
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
795
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
853
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
931
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS
312
936
CHCGILFRDS4
CHICGOZN01
AMERITECH ILLINOIS