NPA	NXX	CLLI	City, ST	Telco
313	331	DTRTMILXCG0	DETROITZN2	AMERITECH MICHIGAN
313	499	DTRTMILXCG0	DETROITZN2	AMERITECH MICHIGAN
313	821	DTRTMILXCG0	DETROITZN2	AMERITECH MICHIGAN
313	822	DTRTMILXCG0	DETROITZN2	AMERITECH MICHIGAN
313	823	DTRTMILXCG0	DETROITZN2	AMERITECH MICHIGAN
313	824	DTRTMILXCG0	DETROITZN2	AMERITECH MICHIGAN
313	926	DTRTMILXCG0	DETROITZN2	AMERITECH MICHIGAN