Robtex

Up: 80.255.80.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 80.255.88.0/22
Down right: 80.255.92.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.255.88.0	A+PTR	pool-80-255-88-0.is74.ru
80.255.88.1	A+PTR	pool-80-255-88-1.is74.ru
80.255.88.27	PTR	pool-80-255-88-27.is74.ru
80.255.88.27	A	uralfg.ru
80.255.88.28	A	pool-80-255-88-28.is74.ru
80.255.88.33	A	pool-80-255-88-33.is74.ru
80.255.88.124	A	pool-80-255-88-124.is74.ru
80.255.88.138	PTR	mail.ch-adm.ru
80.255.88.138	A	mail.rfu.su
80.255.88.138	A	pool-80-255-88-138.is74.ru
80.255.88.146	A+PTR	pool-80-255-88-146.is74.ru
80.255.88.146	A	quant-c.ru
80.255.88.146	A	ns3.quant-c.ru
80.255.88.148	A	pool-80-255-88-148.is74.ru
80.255.88.181	A	pool-80-255-88-181.is74.ru
80.255.88.198	A	mail.uralvt.ru
80.255.88.253	A	pool-80-255-88-253.is74.ru
80.255.89.11	A	pool-80-255-89-11.is74.ru
80.255.89.51	A	pool-80-255-89-51.is74.ru
80.255.89.62	A	pool-80-255-89-62.is74.ru
80.255.89.92	A	pool-80-255-89-92.is74.ru
80.255.89.130	A+PTR	mx2.rtelecom.ru
80.255.89.160	A	pool-80-255-89-160.is74.ru
80.255.89.184	A+PTR	pool-80-255-89-184.is74.ru
80.255.89.198	A	pool-80-255-89-198.is74.ru
80.255.89.202	PTR	pool-80-255-89-202.is74.ru
80.255.89.202	A	mail.ms74.ru
80.255.89.202	A	mail.ms-74.ru
80.255.89.222	A	is.ptk-sp.ru
80.255.89.234	PTR	pool-80-255-89-234.is74.ru
80.255.89.234	A	labtelecom.ru
80.255.89.236	A	pool-80-255-89-236.is74.ru
80.255.89.242	PTR	pool-80-255-89-242.is74.ru
80.255.89.252	A	pool-80-255-89-252.is74.ru
80.255.90.18	A	miass-uspeh.ru
80.255.90.32	A+PTR	pool-80-255-90-32.is74.ru
80.255.90.58	A+PTR	mx99.e-optik.ru
80.255.90.162	PTR	pool-80-255-90-162.is74.ru
80.255.90.162	A	ocdod174.ddns.net
80.255.90.166	A	pool-80-255-90-166.is74.ru
80.255.90.232	A	pool-80-255-90-232.is74.ru
80.255.90.250	A+PTR	pool-80-255-90-250.is74.ru
80.255.91.62	A	www.acko.ru
80.255.91.118	A	pkzaural.ru
80.255.91.235	A+PTR	pool-80-255-91-235.is74.ru
80.255.91.254	A	www.1obl.ru
80.255.92.70	A	chelyabinsk.rusimport.ru
80.255.92.70	A	pool-80-255-92-70.is74.ru
80.255.92.76	A	pool-80-255-92-76.is74.ru
80.255.92.155	PTR	pool-80-255-92-155.is74.ru
80.255.92.155	A	ns1.xn--b1aaid3ban.xn--p1ai
80.255.92.155	A	ns1.vorozhev.su
80.255.93.18	PTR	pool-80-255-93-18.is74.ru
80.255.93.18	A	ursei.su
80.255.93.18	A	ursei.ac.ru
80.255.93.21	A	mail.ursei.su
80.255.93.54	A	ksp74.net
80.255.93.222	A	pool-80-255-93-222.is74.ru
80.255.93.234	A+PTR	pool-80-255-93-234.is74.ru
80.255.93.234	A	www.chuc.ru
80.255.93.234	A	xn--j1azv.xn--p1ai
80.255.93.235	PTR	pool-80-255-93-235.is74.ru
80.255.93.235	A	chuc.ru
80.255.94.8	A+PTR	pool-80-255-94-8.is74.ru
80.255.94.74	A+PTR	pool-80-255-94-74.is74.ru
80.255.94.123	PTR	pool-80-255-94-123.is74.ru
80.255.94.123	A	mail.1makfa.ru
80.255.94.123	A	1makfa.ru
80.255.94.156	A	pool-80-255-94-156.is74.ru
80.255.94.170	A+PTR	pool-80-255-94-170.is74.ru
80.255.94.206	A	arch74.ru
80.255.94.206	A	www.arch74.ru
80.255.95.1	A+PTR	pool-80-255-95-1.is74.ru
80.255.95.98	A	mail.rvd174.ru
80.255.95.118	A	pool-80-255-95-118.is74.ru
80.255.95.142	A	mail.kldom.ru
80.255.95.142	A	mail.klpeeple.ru
80.255.95.142	A	mail.park-servis.ru
80.255.95.255	A	pool-80-255-95-255.is74.ru