Robtex

Up: 72.0.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 72.0.48.0/21
Down right: 72.0.56.0/21

IP	Type	Hostname
72.0.48.75	A+PTR	ns1b.ksregistry.net
72.0.48.76	A+PTR	ns2b.ksregistry.com
72.0.48.78	A+PTR	ns4b.ksregistry.co.uk
72.0.49.1	PTR	ns1.nic.wed
72.0.49.1	A	a.ns.nic.wed
72.0.49.2	A+PTR	ns2.nic.xn--p1acf
72.0.49.2	A	a.ns.nic.xn--p1acf
72.0.49.2	A	tld1.coccaregistry.net
72.0.50.3	A+PTR	a.ns.nic.rodeo
72.0.50.4	PTR	a.ns.nic.kiwi
72.0.50.6	A+PTR	a.ns.nic.casa
72.0.50.10	A	a.ns.nic.cooking
72.0.50.11	A	a.ns.nic.london
72.0.50.16	PTR	a.ns.nic.bradesco
72.0.50.17	A+PTR	a.ns.nic.country
72.0.50.18	A	a.ns.nic.fit
72.0.50.19	PTR	a.ns.nic.gop
72.0.50.20	A	a.ns.nic.luxe
72.0.50.27	A	a.ns.nic.yoga