Robtex

Up: 72.232.48.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 72.232.52.0/23
Down right: 72.232.54.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.232.52.2	A+PTR	2.52.232.72.static.reverse.ltdomains.com
72.232.52.72	A+PTR	72.52.232.72.static.reverse.ltdomains.com
72.232.52.82	A	mail.enteresanolaylar.com
72.232.52.92	A	92.52.232.72.static.reverse.ltdomains.com
72.232.52.100	A	100.52.232.72.static.reverse.ltdomains.com
72.232.52.192	A	192.52.232.72.static.reverse.ltdomains.com
72.232.52.212	A	212.52.232.72.static.reverse.ltdomains.com
72.232.53.82	A+PTR	82.53.232.72.static.reverse.ltdomains.com
72.232.53.86	A	ns2.look4mature.com
72.232.53.100	PTR	hostsign.com
72.232.53.100	A	psychologysite.net
72.232.54.2	PTR	svr.houndbee.com
72.232.54.10	A	10.54.232.72.static.reverse.ltdomains.com
72.232.54.18	A	sc.araserv.com
72.232.54.21	A	ns33.araserv.com
72.232.54.21	A	www-xmyxs-com.258fuwu.com
72.232.54.22	A	ns34.araserv.com
72.232.54.45	A	45.54.232.72.static.reverse.ltdomains.com
72.232.54.66	PTR	savvis.westnic.net
72.232.54.127	A	127.54.232.72.static.reverse.ltdomains.com
72.232.54.129	A	129.54.232.72.static.reverse.ltdomains.com
72.232.54.138	A	138.54.232.72.static.reverse.ltdomains.com
72.232.54.176	A	176.54.232.72.static.reverse.ltdomains.com
72.232.54.234	PTR	mail2.global-nameservers.com
72.232.54.234	A	mail.internalbeta.com
72.232.54.234	A	mail.bestfloristofindia.com
72.232.55.2	PTR	2.55.232.72.static.reverse.ltdomains.com
72.232.55.2	A	nitsan.org
72.232.55.16	A	16.55.232.72.static.reverse.ltdomains.com
72.232.55.62	A+PTR	62.55.232.72.static.reverse.ltdomains.com
72.232.55.65	A	65.55.232.72.static.reverse.ltdomains.com
72.232.55.66	A	mail.upper-cervical-care.com
72.232.55.66	A	mail.lawain.com
72.232.55.72	A	72.55.232.72.static.reverse.ltdomains.com
72.232.55.100	A	100.55.232.72.static.reverse.ltdomains.com
72.232.55.101	A	101.55.232.72.static.reverse.ltdomains.com
72.232.55.111	A	111.55.232.72.static.reverse.ltdomains.com
72.232.55.120	A	120.55.232.72.static.reverse.ltdomains.com
72.232.55.144	A	144.55.232.72.static.reverse.ltdomains.com
72.232.55.148	A	148.55.232.72.static.reverse.ltdomains.com
72.232.55.167	A	167.55.232.72.static.reverse.ltdomains.com
72.232.55.191	A	191.55.232.72.static.reverse.ltdomains.com
72.232.55.202	A	mail.giantservers.com
72.232.55.206	PTR	datacenter.gianthosters.com
72.232.55.224	A	224.55.232.72.static.reverse.ltdomains.com