Robtex

Up: 72.129.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 72.129.144.0/21
Down right: 72.129.152.0/21

IP	Type	Hostname
72.129.144.19	A+PTR	cpe-72-129-144-19.new.res.rr.com
72.129.144.19	A	greglmclean.com
72.129.144.215	A+PTR	cpe-72-129-144-215.new.res.rr.com
72.129.145.83	PTR	cpe-72-129-145-83.new.res.rr.com
72.129.146.145	A+PTR	cpe-72-129-146-145.new.res.rr.com
72.129.148.214	A+PTR	cpe-72-129-148-214.new.res.rr.com
72.129.148.214	A	roycormier.net
72.129.149.188	A+PTR	cpe-72-129-149-188.new.res.rr.com
72.129.149.188	A	nascampbell.com
72.129.150.217	A+PTR	cpe-72-129-150-217.new.res.rr.com
72.129.151.244	PTR	cpe-72-129-151-244.new.res.rr.com
72.129.153.150	A+PTR	cpe-72-129-153-150.new.res.rr.com
72.129.153.152	A+PTR	cpe-72-129-153-152.new.res.rr.com
72.129.153.152	A	schaetzco.com
72.129.153.186	A+PTR	cpe-72-129-153-186.new.res.rr.com
72.129.153.199	A+PTR	cpe-72-129-153-199.new.res.rr.com
72.129.153.239	A+PTR	cpe-72-129-153-239.new.res.rr.com
72.129.153.239	A	448am.com
72.129.154.57	A+PTR	cpe-72-129-154-57.new.res.rr.com
72.129.154.57	A	golankgames.com
72.129.155.195	A+PTR	cpe-72-129-155-195.new.res.rr.com
72.129.155.195	A	playhexcraft.com
72.129.156.169	A	nascampbell.com
72.129.157.43	A+PTR	cpe-72-129-157-43.new.res.rr.com
72.129.157.43	A	calhaasl.com
72.129.157.170	A+PTR	cpe-72-129-157-170.new.res.rr.com
72.129.157.194	A	www.blex.org
72.129.157.194	A	blex.org
72.129.157.194	A	cpe-72-129-157-194.new.res.rr.com
72.129.157.204	A	projcts.tk
72.129.159.77	A+PTR	cpe-72-129-159-77.new.res.rr.com