Robtex

Up: 31.177.80.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 31.177.80.0/26
Down right: 31.177.80.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
31.177.80.4	A+PTR	www.nic.ru
31.177.80.4	A	nic.ru
31.177.80.15	PTR	faitid.org
31.177.80.15	A	www.flexireg.ru
31.177.80.15	A	flexregistry.domains
31.177.80.16	PTR	domainmoscow.org
31.177.80.18	PTR	hosting.nic.ru
31.177.80.18	A	www.hosting.nic.ru
31.177.80.19	A+PTR	www.mail.nic.ru
31.177.80.21	A	storage.nic.ru
31.177.80.40	PTR	www.r01.ru.80.177.31.in-addr.arpa
31.177.80.40	A	xn--e1aqdaiideye.xn--p1ai
31.177.80.40	A	ro1.ru
31.177.80.41	A+PTR	ns1.r01.ru
31.177.80.70	A	bachelors.ru
31.177.80.70	A	zks.ru
31.177.80.70	A	thermae.ru
31.177.80.80	PTR	go.whois.nic.ru
31.177.80.80	A	whois.nic.ru