Robtex

Up: 80.255.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 80.255.80.0/21
Down right: 80.255.88.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.255.80.0	PTR	pool-80-255-80-0.is74.ru
80.255.80.1	A+PTR	pool-80-255-80-1.is74.ru
80.255.80.14	A	pool-80-255-80-14.is74.ru
80.255.80.22	A	ns.pjreo74.ru
80.255.80.22	A	pjreo74.ru
80.255.80.91	A	pool-80-255-80-91.is74.ru
80.255.80.94	A	pool-80-255-80-94.is74.ru
80.255.80.123	A	pool-80-255-80-123.is74.ru
80.255.80.130	A+PTR	iserver.freshclimat.ru
80.255.80.210	PTR	pool-80-255-80-210.chelcom.ru
80.255.80.210	A	comnet.su
80.255.80.210	A	ns3.comnet.su
80.255.80.250	A	vendorportal.ru
80.255.80.250	A	www.vendorportal.ru
80.255.80.250	A	mail.vendorportal.ru
80.255.81.1	A	pool-80-255-81-1.is74.ru
80.255.81.34	A+PTR	pool-80-255-81-34.is74.ru
80.255.81.50	A	max-cloud.ru
80.255.81.51	PTR	pool-80-255-81-51.is74.ru
80.255.81.51	A	smtp2.mutuelle-familiale.fr
80.255.81.54	A	expedition.tk
80.255.81.54	A	o-black.ru
80.255.81.69	A	pool-80-255-81-69.is74.ru
80.255.81.74	A	pool-80-255-81-74.is74.ru
80.255.81.134	A	pool-80-255-81-134.is74.ru
80.255.81.147	A+PTR	pool-80-255-81-147.is74.ru
80.255.81.161	PTR	pool-80-255-81-161.is74.ru
80.255.81.194	A	pool-80-255-81-194.is74.ru
80.255.81.213	A	pool-80-255-81-213.is74.ru
80.255.81.242	PTR	pool-80-255-81-242.is74.ru
80.255.81.242	A	sysodmins.ru
80.255.81.254	A	techniks-park.ru
80.255.81.254	A	mail.tpk-chel.ru
80.255.81.254	A	tpk-chel.ru
80.255.82.17	PTR	pool-80-255-82-17.is74.ru
80.255.82.38	A	okolitenco.com
80.255.82.53	A	pool-80-255-82-53.is74.ru
80.255.82.138	A	pool-80-255-82-138.is74.ru
80.255.82.139	A	pool-80-255-82-139.is74.ru
80.255.82.184	A	pool-80-255-82-184.is74.ru
80.255.82.202	A	spk-mail.ru
80.255.82.210	A+PTR	pool-80-255-82-210.is74.ru
80.255.82.218	A	mail.intser.ru
80.255.82.232	A	pool-80-255-82-232.is74.ru
80.255.83.0	A+PTR	pool-80-255-83-0.is74.ru
80.255.83.3	A	pool-80-255-83-3.is74.ru
80.255.83.15	A	pool-80-255-83-15.is74.ru
80.255.83.22	A	pool-80-255-83-22.is74.ru
80.255.83.66	A+PTR	pool-80-255-83-66.is74.ru
80.255.83.66	A	leznet.ru
80.255.83.70	A	pool-80-255-83-70.is74.ru
80.255.83.99	A+PTR	pool-80-255-83-99.is74.ru
80.255.83.102	A	ns.sonda-unic.ru
80.255.83.148	A+PTR	pool-80-255-83-148.is74.ru
80.255.83.159	A	pool-80-255-83-159.is74.ru
80.255.83.166	A+PTR	pool-80-255-83-166.is74.ru
80.255.83.183	A	pool-80-255-83-183.is74.ru
80.255.83.210	A+PTR	pool-80-255-83-210.is74.ru
80.255.83.216	A	pool-80-255-83-216.is74.ru
80.255.83.218	A	pool-80-255-83-218.is74.ru
80.255.83.222	A	mail.suncity74.ru
80.255.83.224	A+PTR	pool-80-255-83-224.is74.ru
80.255.83.228	A	pool-80-255-83-228.is74.ru
80.255.83.231	A	pool-80-255-83-231.is74.ru
80.255.83.235	A	pool-80-255-83-235.is74.ru
80.255.83.242	PTR	mail.alpina-group.ru
80.255.83.242	A	mail.abs74.ru
80.255.83.242	A	alpina.chel.ru
80.255.84.2	A+PTR	chelmsz.ru
80.255.84.13	A	pool-80-255-84-13.is74.ru
80.255.84.14	A	pool-80-255-84-14.is74.ru
80.255.84.42	A	pool-80-255-84-42.is74.ru
80.255.84.61	A	pool-80-255-84-61.is74.ru
80.255.84.74	A	pool-80-255-84-74.is74.ru
80.255.84.95	A	pool-80-255-84-95.is74.ru
80.255.84.97	A	pool-80-255-84-97.is74.ru
80.255.84.102	A	pool-80-255-84-102.is74.ru
80.255.84.109	A	pool-80-255-84-109.is74.ru
80.255.84.135	A	pool-80-255-84-135.is74.ru
80.255.84.162	PTR	pool-80-255-84-162.is74.ru
80.255.84.217	A	pool-80-255-84-217.is74.ru
80.255.84.219	A	pool-80-255-84-219.is74.ru
80.255.84.230	A	pool-80-255-84-230.is74.ru
80.255.85.46	A	www.kzit.ru
80.255.85.46	A	pool-80-255-85-46.is74.ru
80.255.85.46	A	kzit.ru
80.255.85.54	A	pool-80-255-85-54.is74.ru
80.255.85.172	A	pool-80-255-85-172.is74.ru
80.255.85.197	A	pool-80-255-85-197.is74.ru
80.255.85.221	A	pool-80-255-85-221.is74.ru
80.255.85.235	A	pool-80-255-85-235.is74.ru
80.255.86.26	A	pool-80-255-86-26.is74.ru
80.255.86.38	A	pool-80-255-86-38.is74.ru
80.255.86.49	A+PTR	pool-80-255-86-49.is74.ru
80.255.86.62	A	email1.mgn-doctor.ru
80.255.86.86	A	pool-80-255-86-86.is74.ru
80.255.86.106	A	mx2.ctmol.ru
80.255.86.114	A+PTR	pool-80-255-86-114.is74.ru
80.255.86.114	A	fizy-tour.ru
80.255.86.114	A	mail.fizy-tour.ru
80.255.86.134	A	sr174.ru
80.255.86.243	A	pool-80-255-86-243.is74.ru
80.255.87.1	A+PTR	pool-80-255-87-1.is74.ru
80.255.87.50	A	pool-80-255-87-50.is74.ru
80.255.87.94	A	vashsite74.ru
80.255.87.94	A	www.vashsite74.ru
80.255.87.94	A	vsesamplus.ru
80.255.87.145	A+PTR	pool-80-255-87-145.is74.ru
80.255.87.255	A	pool-80-255-87-255.is74.ru
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	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	A	mail.rfu.su
80.255.88.138	A	pool-80-255-88-138.is74.ru
80.255.88.138	A	ns.ch-adm.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	pool-80-255-89-184.is74.ru
80.255.89.198	A	pool-80-255-89-198.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	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	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	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	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	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	www.chuc.ru
80.255.93.234	A	xn--j1azv.xn--p1ai
80.255.93.234	A	pool-80-255-93-234.is74.ru
80.255.93.235	A	chuc.ru
80.255.94.8	A	pool-80-255-94-8.is74.ru
80.255.94.74	A	pool-80-255-94-74.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	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