Robtex

Up: 31.28.128.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 31.28.192.0/19
Down right: 31.28.224.0/19
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
31.28.192.1	PTR	31-28-192-1.domolink.elcom.ru
31.28.192.2	PTR	31-28-192-2.domolink.elcom.ru
31.28.192.192	PTR	31-28-192-192.domolink.elcom.ru
31.28.192.195	PTR	31-28-192-195.domolink.elcom.ru
31.28.192.198	A	ig11.ddns.net
31.28.193.66	PTR	31-28-193-66.domolink.elcom.ru
31.28.193.67	PTR	31-28-193-67.domolink.elcom.ru
31.28.194.130	PTR	31-28-194-130.domolink.elcom.ru
31.28.194.194	PTR	31-28-194-194.domolink.elcom.ru
31.28.196.2	PTR	31-28-196-2.domolink.elcom.ru
31.28.196.192	PTR	31-28-196-192.domolink.elcom.ru
31.28.196.195	PTR	31-28-196-195.domolink.elcom.ru
31.28.197.4	PTR	31-28-197-4.domolink.elcom.ru
31.28.197.65	PTR	31-28-197-65.domolink.elcom.ru
31.28.198.128	PTR	31-28-198-128.domolink.elcom.ru
31.28.199.1	PTR	31-28-199-1.domolink.elcom.ru
31.28.199.65	PTR	31-28-199-65.domolink.elcom.ru
31.28.199.219	A	vospushka.ru
31.28.200.2	PTR	31-28-200-2.domolink.elcom.ru
31.28.200.3	PTR	31-28-200-3.domolink.elcom.ru
31.28.201.3	PTR	31-28-201-3.domolink.elcom.ru
31.28.202.128	PTR	31-28-202-128.domolink.elcom.ru
31.28.203.66	PTR	31-28-203-66.domolink.elcom.ru
31.28.203.192	PTR	31-28-203-192.domolink.elcom.ru
31.28.205.3	PTR	31-28-205-3.domolink.elcom.ru
31.28.205.4	PTR	31-28-205-4.domolink.elcom.ru
31.28.205.66	PTR	31-28-205-66.domolink.elcom.ru
31.28.205.129	PTR	31-28-205-129.domolink.elcom.ru
31.28.206.65	PTR	31-28-206-65.domolink.elcom.ru
31.28.206.130	PTR	31-28-206-130.domolink.elcom.ru
31.28.206.192	PTR	31-28-206-192.domolink.elcom.ru
31.28.207.193	PTR	31-28-207-193.domolink.elcom.ru
31.28.208.1	PTR	31-28-208-1.domolink.elcom.ru
31.28.208.129	PTR	31-28-208-129.domolink.elcom.ru
31.28.210.128	PTR	31-28-210-128.domolink.elcom.ru
31.28.210.128	A	squarestone.ru
31.28.210.130	PTR	31-28-210-130.domolink.elcom.ru
31.28.210.195	PTR	31-28-210-195.domolink.elcom.ru
31.28.211.1	PTR	31-28-211-1.domolink.elcom.ru
31.28.213.64	PTR	31-28-213-64.domolink.elcom.ru
31.28.214.192	PTR	31-28-214-192.domolink.elcom.ru
31.28.215.64	PTR	31-28-215-64.domolink.elcom.ru
31.28.216.80	A	ig11.ddns.net
31.28.218.4	PTR	31-28-218-4.domolink.elcom.ru
31.28.218.128	PTR	31-28-218-128.domolink.elcom.ru
31.28.220.86	PTR	31-28-220-86.domolink.elcom.ru
31.28.220.206	PTR	31-28-220-206.domolink.elcom.ru
31.28.220.210	PTR	31-28-220-210.domolink.elcom.ru
31.28.221.193	PTR	31-28-221-193.domolink.elcom.ru
31.28.222.2	PTR	31-28-222-2.domolink.elcom.ru
31.28.222.64	PTR	31-28-222-64.domolink.elcom.ru
31.28.222.66	PTR	31-28-222-66.domolink.elcom.ru
31.28.222.81	A	x-flight.su
31.28.222.131	PTR	31-28-222-131.domolink.elcom.ru
31.28.224.61	A	ns1.serverweb.at
31.28.224.61	A	nnagazin.ru
31.28.224.244	A	sevsait.com
31.28.224.244	A	ns.sevsait.com
31.28.225.4	PTR	4-225-28-31.host.sevstar.net
31.28.225.192	PTR	host-192-225-28-31.sevstar.net
31.28.225.195	PTR	host-195-225-28-31.sevstar.net
31.28.226.246	A	www.sevcom.net
31.28.226.246	A	sevcom.net
31.28.226.253	A	mail.mercury-market.ru
31.28.230.65	PTR	host-65-230-28-31.sevstar.net
31.28.230.128	PTR	host-128-230-28-31.sevstar.net
31.28.230.154	A	sunhousee.org
31.28.230.192	PTR	host-192-230-28-31.sevstar.net
31.28.231.1	PTR	host-1-231-28-31.sevstar.net
31.28.231.3	PTR	host-3-231-28-31.sevstar.net
31.28.231.4	PTR	host-4-231-28-31.sevstar.net
31.28.231.130	PTR	host-130-231-28-31.sevstar.net
31.28.231.131	PTR	host-131-231-28-31.sevstar.net
31.28.233.135	A	progredev.com
31.28.233.193	PTR	host-193-233-28-31.sevstar.net
31.28.234.246	A	raris.ru
31.28.236.220	A	mail.sto.sebastopol.ua
31.28.236.220	A	sto.sebastopol.ua
31.28.237.73	PTR	host-73-237-28-31.sevstar.net
31.28.237.210	PTR	210-237-28-31.host.sevstar.net
31.28.237.230	PTR	host-230-237-28-31.sevstar.net
31.28.237.235	PTR	235-237-28-31.host.sevstar.net
31.28.238.66	PTR	host-66-238-28-31.sevstar.net
31.28.238.67	PTR	host-67-238-28-31.sevstar.net
31.28.238.192	PTR	host-192-238-28-31.sevstar.net
31.28.239.94	PTR	host-94-239-28-31.sevstar.net
31.28.240.131	PTR	131-240-28-31.host.sevstar.net
31.28.242.154	PTR	host-154-242-28-31.sevstar.net
31.28.242.233	PTR	233-242-28-31.host.sevstar.net
31.28.243.131	PTR	host-131-243-28-31.sevstar.net
31.28.243.140	A	stende.ru
31.28.243.140	A	skylamb.com
31.28.244.2	PTR	host-2-244-28-31.sevstar.net
31.28.244.129	PTR	host-129-244-28-31.sevstar.net
31.28.248.180	PTR	host-180-248-28-31.sevstar.net
31.28.248.180	A	router.sevastopol-hotel.com.ru
31.28.248.180	A	router.sevastopol-hotel.com.ua
31.28.248.253	PTR	253-248-28-31.host.sevstar.net
31.28.248.253	A	*.pid.net.ua
31.28.248.253	A	*.zip.net.ua
31.28.249.18	A	com-page-18563-www-bmo.com
31.28.252.110	A	nice-health.ru
31.28.252.110	A	www.zel-sad.ru
31.28.252.110	A	zel-sad.ru
31.28.253.53	PTR	host-53-253-28-31.sevstar.net
31.28.253.136	PTR	136-253-28-31.host.sevstar.net
31.28.255.186	PTR	186-255-28-31.host.sevstar.net