Robtex

Up: 72.1.32.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 72.1.32.0/23
Down right: 72.1.34.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.1.32.14	A	outdoorsportshow.com
72.1.32.14	A	atdns2b.alliancetech.com
72.1.32.151	A+PTR	ns1.domaindiscover.com
72.1.32.158	A+PTR	tierra.net
72.1.32.158	A	domaindiscover.com
72.1.32.158	A	www.domaindiscover.com
72.1.32.168	A	davidmckitrick.com
72.1.32.168	A	advamas.biz
72.1.32.168	A	eroticpjs.com
72.1.32.185	A	ns1.tierra.net
72.1.33.3	A+PTR	ns1-colo.tierra.net
72.1.33.5	A+PTR	url1-colo.tierra.net
72.1.33.5	A	kimberlynewman.com
72.1.33.5	A	alertml.net
72.1.33.6	PTR	url2-colo.tierra.net
72.1.33.6	A	kimberlynewman.com
72.1.33.6	A	alertml.net
72.1.33.139	PTR	numberbarn.com
72.1.33.143	A	signsplat.com