Robtex

Up: 31.128.32.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 31.128.32.0/23
Down right: 31.128.34.0/23

IP	Type	Hostname
31.128.33.20	A	saools.com
31.128.33.26	A+PTR	dyn-33-26.newit-lan.ru
31.128.33.34	A	newdawnxercise.net
31.128.33.37	A+PTR	exchange.newdawnxercise.net
31.128.33.44	A+PTR	atl161.newdawnxercise.net
31.128.33.45	A+PTR	atl21.newdawnxercise.net
31.128.33.48	A	crossfike.net
31.128.33.53	A+PTR	dyn-33-53.newit-lan.ru
31.128.33.90	A	internealth.com
31.128.33.98	A+PTR	dyn-33-98.newit-lan.ru
31.128.33.125	A+PTR	dyn-33-125.newit-lan.ru
31.128.33.160	A	afrks.com
31.128.33.169	A+PTR	dyn-33-169.newit-lan.ru
31.128.33.173	A+PTR	exchange122.afrks.com
31.128.33.174	A+PTR	dyn-33-174.newit-lan.ru
31.128.34.15	A+PTR	dyn-34-15.newit-lan.ru
31.128.34.76	A+PTR	dyn-34-76.newit-lan.ru
31.128.34.90	A+PTR	dyn-34-90.newit-lan.ru
31.128.34.122	PTR	dyn-34-122.newit-lan.ru
31.128.34.162	A+PTR	dyn-34-162.newit-lan.ru
31.128.34.183	A+PTR	dyn-34-183.newit-lan.ru
31.128.34.195	A+PTR	dyn-34-195.newit-lan.ru
31.128.34.242	A+PTR	dyn-34-242.newit-lan.ru
31.128.34.252	A+PTR	dyn-34-252.newit-lan.ru
31.128.35.2	A	dyn-35-2.newit-lan.ru
31.128.35.34	A	creativiates.com
31.128.35.44	A+PTR	dyn-35-44.newit-lan.ru
31.128.35.62	A	welnnect.com
31.128.35.66	A+PTR	dyn-35-66.newit-lan.ru
31.128.35.104	PTR	dyn-35-104.newit-lan.ru
31.128.35.104	A	smnique.net
31.128.35.173	A+PTR	dyn-35-173.newit-lan.ru
31.128.35.213	A+PTR	dyn-35-213.newit-lan.ru
31.128.35.217	A+PTR	dyn-35-217.newit-lan.ru
31.128.35.240	A+PTR	dyn-35-240.newit-lan.ru
31.128.35.241	A+PTR	dyn-35-241.newit-lan.ru