Robtex

Up: 80.255.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 80.255.84.0/23
Down right: 80.255.86.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
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+PTR	pool-80-255-85-46.is74.ru
80.255.85.46	A	www.kzit.ru
80.255.85.46	A	kzit.ru
80.255.85.54	A+PTR	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+PTR	pool-80-255-86-38.is74.ru
80.255.86.49	A+PTR	pool-80-255-86-49.is74.ru
80.255.86.62	PTR	pool-80-255-86-62.is74.ru
80.255.86.62	A	email1.mgn-doctor.ru
80.255.86.86	A+PTR	pool-80-255-86-86.is74.ru
80.255.86.106	A+PTR	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	PTR	pool-80-255-86-134.is74.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	PTR	pool-80-255-87-94.is74.ru
80.255.87.94	A	vashsite74.ru
80.255.87.94	A	www.vashsite74.ru
80.255.87.145	A+PTR	pool-80-255-87-145.is74.ru
80.255.87.255	A+PTR	pool-80-255-87-255.is74.ru