Robtex

Up: 66.150.248.0/21
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Down left: 66.150.248.0/23
Down right: 66.150.250.0/23

IP	Type	Hostname
66.150.249.120	A	deafbuzz.com
66.150.250.137	PTR	border2.ge1-7.zgncorpit-3.oak001.pnap.net
66.150.250.145	PTR	border2.ge4-9.yelp-1.sfo002.pnap.net
66.150.250.166	PTR	avast-16.edge2.sfo002.pnap.net
66.150.251.54	PTR	host-66-150-251-54.shopping.com
66.150.251.54	A	sfo-gss.shoppy.com
66.150.251.68	PTR	static.epinions.com