Robtex

Up: 66.81.80.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 66.81.80.0/24
Down right: 66.81.81.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.81.80.20	PTR	appsvr.newsreview.com
66.81.80.21	PTR	websvr.newsreview.com
66.81.80.34	A+PTR	66-81-80-34.static-ip.telepacific.net
66.81.80.34	A	2mail.calgren.com
66.81.80.49	A+PTR	66-81-80-49.static-ip.telepacific.net
66.81.80.130	PTR	star.stardustweb.net
66.81.80.130	A	sierrasprings.org
66.81.80.130	A	www.sierrasbest.net
66.81.80.131	PTR	smtps.sierrasbest.net
66.81.80.138	PTR	zero.redvsblue.com
66.81.80.139	PTR	www.redvsblue.com
66.81.80.141	PTR	www.roosterteeth.com
66.81.80.194	A	cust-66-81-80-194.static.o1.com
66.81.80.197	A	cust-66-81-80-197.static.o1.com
66.81.80.199	A	cust-66-81-80-199.static.o1.com
66.81.80.200	A	cust-66-81-80-200.static.o1.com
66.81.80.203	A	cust-66-81-80-203.static.o1.com
66.81.80.207	PTR	66-81-80-207.static-ip.telepacific.net
66.81.80.207	A	cust-66-81-80-207.static.o1.com
66.81.80.212	A	cust-66-81-80-212.static.o1.com
66.81.80.219	A	cust-66-81-80-219.static.o1.com
66.81.80.221	A	cust-66-81-80-221.static.o1.com
66.81.80.225	A	cust-66-81-80-225.static.o1.com
66.81.80.226	PTR	66-81-80-226.static-ip.telepacific.net
66.81.80.226	A	cust-66-81-80-226.static.o1.com
66.81.80.226	A	efacturador.com
66.81.80.228	PTR	66-81-80-228.static-ip.telepacific.net
66.81.80.228	A	cust-66-81-80-228.static.o1.com
66.81.80.229	A	cust-66-81-80-229.static.o1.com
66.81.80.229	A	recon-inc.com
66.81.80.230	A+PTR	66-81-80-230.static-ip.telepacific.net
66.81.80.230	A	main.3webbox.com
66.81.80.230	A	hookahzoneusa.com
66.81.80.231	A	onevapeeliquid.com
66.81.80.232	A	cust-66-81-80-232.static.o1.com
66.81.80.234	A	cust-66-81-80-234.static.o1.com
66.81.80.235	PTR	66-81-80-235.static-ip.telepacific.net
66.81.80.235	A	journeyathleticgear.com
66.81.80.235	A	cust-66-81-80-235.static.o1.com
66.81.80.237	A+PTR	66-81-80-237.static-ip.telepacific.net
66.81.80.237	A	cust-66-81-80-237.static.o1.com
66.81.80.238	A	cust-66-81-80-238.static.o1.com
66.81.80.244	A+PTR	66-81-80-244.static-ip.telepacific.net
66.81.80.244	A	cust-66-81-80-244.static.o1.com
66.81.80.246	A	cust-66-81-80-246.static.o1.com
66.81.80.251	A	cust-66-81-80-251.static.o1.com
66.81.80.252	A+PTR	66-81-80-252.static-ip.telepacific.net
66.81.80.252	A	cust-66-81-80-252.static.o1.com
66.81.80.254	A	cust-66-81-80-254.static.o1.com
66.81.81.52	PTR	cust-66-81-81-52.static.o1.com
66.81.81.75	A+PTR	cust-66-81-81-75.static.o1.com
66.81.81.251	PTR	cust-66-81-81-251.static.o1.com