NPA	NXX	CLLI	City, ST	Telco
281	436	HSTNTXEHDS0	HSTNSUBURB	SOUTHWESTERN BELL
281	454	HSTNTXEHDS0	HSTNSUBURB	SOUTHWESTERN BELL
281	458	HSTNTXEHDS0	HSTNSUBURB	SOUTHWESTERN BELL
281	459	HSTNTXEHDS0	HSTNSUBURB	SOUTHWESTERN BELL