NPA	NXX	CLLI	City, ST	Telco
847	223	GYLKILGLDS0	GRAYS LAKE	AMERITECH ILLINOIS
847	231	CHCGILCLDS7	GRAYS LAKE	TELEPORT COMMUNICATIONS GROUP - CHICAGO
847	543	GYLKILGLDS0	GRAYS LAKE	AMERITECH ILLINOIS
847	548	GYLKILGLDS0	GRAYS LAKE	AMERITECH ILLINOIS
847	986	CHCGIL24DS0	GRAYS LAKE	TELEPORT COMMUNICATIONS GROUP - CHICAGO