Robtex

Up: 77.88.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 77.88.32.0/20
Down right: 77.88.48.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
77.88.32.0	PTR	net-myt-vlan141.yandex.net
77.88.32.1	A	dhcp32-1-boot.yandex.net
77.88.32.2	A	dhcp32-2-boot.yandex.net
77.88.32.3	A	dhcp32-3-boot.yandex.net
77.88.32.4	A	dhcp32-4-boot.yandex.net
77.88.32.32	A+PTR	dhcp32-32-boot.yandex.net
77.88.32.33	A	dhcp32-33-boot.yandex.net
77.88.32.34	A	dhcp32-34-boot.yandex.net
77.88.32.35	A	dhcp32-35-boot.yandex.net
77.88.32.64	A	dhcp32-64-boot.yandex.net
77.88.32.65	A	dhcp32-65-boot.yandex.net
77.88.32.66	A	dhcp32-66-boot.yandex.net
77.88.32.67	A	dhcp32-67-boot.yandex.net
77.88.32.96	A	dhcp32-96-boot.yandex.net
77.88.32.97	A+PTR	dhcp32-97-boot.yandex.net
77.88.32.98	A	dhcp32-98-boot.yandex.net
77.88.32.99	A	dhcp32-99-boot.yandex.net
77.88.32.128	A+PTR	dhcp32-128-boot.yandex.net
77.88.32.129	A	dhcp32-129-boot.yandex.net
77.88.32.130	A	dhcp32-130-boot.yandex.net
77.88.32.139	A	dhcp32-139-boot.yandex.net
77.88.32.161	A	dhcp32-161-boot.yandex.net
77.88.32.188	A	dhcp32-188-boot.yandex.net
77.88.32.190	A	dhcp32-190-boot.yandex.net
77.88.32.193	A	dhcp32-193-boot.yandex.net
77.88.32.200	A	dhcp32-200-boot.yandex.net
77.88.32.202	A	dhcp32-202-boot.yandex.net
77.88.32.218	A	dhcp32-218-boot.yandex.net
77.88.32.226	A	dhcp32-226-boot.yandex.net
77.88.32.245	A	dhcp32-245-boot.yandex.net
77.88.32.253	A	dhcp32-253-boot.yandex.net
77.88.33.144	A	s207vla.storage.yandex.net
77.88.33.155	A	s218vla.storage.yandex.net
77.88.33.156	A	s219vla.storage.yandex.net
77.88.34.65	A	ams1-1363.yandex.ru
77.88.34.79	A+PTR	ams1-1377.yandex.ru
77.88.34.170	A+PTR	bastinda.yandex.ru
77.88.35.10	A	cache-nnov01.cdn.yandex.net
77.88.35.11	A	cache-nnov02.cdn.yandex.net
77.88.35.12	A	cache-nnov03.cdn.yandex.net
77.88.35.13	A	cache-nnov04.cdn.yandex.net
77.88.37.0	PTR	net-eto-vlan641.yandex.net
77.88.39.0	A	s110vla.storage.yandex.net
77.88.39.1	A	s111vla.storage.yandex.net
77.88.39.2	A	s112vla.storage.yandex.net
77.88.39.3	A	s113vla.storage.yandex.net
77.88.39.32	A	s142vla.storage.yandex.net
77.88.39.33	A	s143vla.storage.yandex.net
77.88.39.40	A	s150vla.storage.yandex.net
77.88.39.59	A	s169vla.storage.yandex.net
77.88.39.160	PTR	ng-srv01q.narod.yandex.net
77.88.39.192	PTR	up5sb-narod.yandex.ru
77.88.40.16	A	net-ugr-vlan672.yandex.net
77.88.40.28	A	e20.wfront.yandex.net
77.88.40.82	A	mail2.yandex-team.ru
77.88.40.90	A	ipvs-msexchange-ugr.yandex.net
77.88.40.96	PTR	net-eto-vlan663.yandex.net
77.88.40.110	A	freebsd-svn.yandex.net
77.88.40.117	A	filer1.yandex.net
77.88.41.29	A	searobin-ipsec401.yndx.net
77.88.43.26	A	77.88.43.26-red2.dhcp.yndx.net
77.88.44.4	PTR	newsfront4-003.yandex.ru
77.88.44.44	A	yastat.net
77.88.44.144	A	1.yastat.net
77.88.44.244	A	2.yastat.net
77.88.45.5	A+PTR	nelma-lo4.yndx.net
77.88.45.5	A	cipt-vgw-nsk.iptel.yandex.net
77.88.45.12	A	cipt-nsk-rec.iptel.yandex.net
77.88.45.13	A	cipt-nsk-rec-mgmt.iptel.yandex.net
77.88.45.32	PTR	net-nsk-vlan419.yandex.net
77.88.45.32	A	cipt-vsx-nsk.iptel.yandex.net
77.88.45.208	A	whaler-ipsec205.yndx.net
77.88.45.208	A	net-nsk-vlan435.yandex.net
77.88.45.217	A	nskvideo.yandex.ru
77.88.45.226	A+PTR	vcs-nsk-gmt.yndx.net
77.88.45.226	A	vcs-nsk-egypt.iptel.yandex.net
77.88.46.0	A	net-man-vlan1302.yandex.net
77.88.46.4	PTR	web9d.yandex.ru
77.88.46.6	A	forward1.mail.yandex.net
77.88.46.8	A	forward3.mail.yandex.net
77.88.46.8	A	s08man.storage.yandex.net
77.88.46.32	A	s32man.storage.yandex.net
77.88.46.33	A	s33man.storage.yandex.net
77.88.46.34	A	s34man.storage.yandex.net
77.88.46.35	A	s35man.storage.yandex.net
77.88.46.64	A	s64man.storage.yandex.net
77.88.46.65	A	s65man.storage.yandex.net
77.88.46.66	PTR	imap8d.mail.yandex.net
77.88.46.66	A	s66man.storage.yandex.net
77.88.46.66	A	s66i.storage.yandex.net
77.88.46.67	PTR	imap9d.mail.yandex.net
77.88.46.102	A+PTR	smtp2.mail.yandex.net
77.88.46.107	A	s240man.storage.yandex.net
77.88.46.108	A	s241man.storage.yandex.net
77.88.46.110	A	s243man.storage.yandex.net
77.88.46.169	PTR	ext-resolve05i.ht.yandex.net
77.88.46.199	PTR	sasulca2b.mail.yandex.net
77.88.46.214	A	mulca125a.mail.yandex.net
77.88.46.218	A	mulca129a.mail.yandex.net
77.88.46.242	A	msearch11.mail.yandex.net
77.88.46.246	A	msearch19.mail.yandex.net
77.88.46.247	A	msearch20.mail.yandex.net
77.88.47.0	A	net-man-vlan595.yandex.net
77.88.47.1	PTR	sasulca32b.mail.yandex.net
77.88.47.2	PTR	sasulca3b.mail.yandex.net
77.88.47.3	PTR	spider-77-88-47-3.yandex.com
77.88.47.5	A	77-88-47-5.spider.yandex.com
77.88.47.6	A	spider-77-88-47-6.yandex.com
77.88.47.9	A	77-88-47-9.spider.yandex.com
77.88.47.32	A+PTR	msearch4.mail.yandex.net
77.88.47.35	A+PTR	spider-77-88-47-35.yandex.com
77.88.47.36	A	77-88-47-36.spider.yandex.com
77.88.47.38	A	spider-77-88-47-38.yandex.com
77.88.47.64	PTR	sasulca165a.mail.yandex.net
77.88.47.66	PTR	mdb100c-virt.mail.yandex.net
77.88.47.67	PTR	mdb100d-virt.mail.yandex.net
77.88.47.75	A	spider-77-88-47-75.yandex.com
77.88.47.80	A	77-88-47-80.spider.yandex.com
77.88.47.84	A	spider-77-88-47-84.yandex.com
77.88.47.86	A	77-88-47-86.spider.yandex.com
77.88.47.100	A+PTR	spider-77-88-47-100.yandex.com
77.88.47.101	A+PTR	spider-77-88-47-101.yandex.com
77.88.47.109	A	spider-77-88-47-109.yandex.com
77.88.47.120	A	spider-77-88-47-120.yandex.com
77.88.47.130	A+PTR	77-88-47-130.spider.yandex.com
77.88.47.132	A	mxback6.mail.yandex.net
77.88.47.153	A	rpop1d.mail.yandex.net
77.88.47.180	A	service5.mail.yandex.net
77.88.47.253	PTR	mstat2.mail.yandex.net
77.88.48.0	A+PTR	net-ekb-vlan659.yandex.net
77.88.48.7	A	cache-ekt01.cdn.yandex.net
77.88.49.80	PTR	net-rstv-vlan297.yandex.net
77.88.52.0	PTR	net-red-vlan600.yandex.net
77.88.52.2	A	red1-41u2.yndx.net
77.88.52.50	A	red1-25a2.yndx.net
77.88.52.93	A	testlab-n1e.yandex.net
77.88.52.134	A	red1-53u6.yndx.net
77.88.52.205	A	red1-62w2.yndx.net
77.88.52.205	A	snaketo.yandex.net
77.88.53.99	PTR	wf2428.yandex.net
77.88.54.7	A+PTR	cache-novosibmts01.cdn.yandex.net
77.88.54.8	A	cache-novosibmts02.cdn.yandex.net
77.88.54.9	A	cache-novosibmts03.cdn.yandex.net
77.88.54.10	A	cache-novosibmts04.cdn.yandex.net
77.88.54.65	A+PTR	w-dev1.yandex.net
77.88.54.66	A+PTR	w-dev3.yandex.net
77.88.54.67	A	w-dev2.yandex.net
77.88.54.128	A	net-nsk-vlan542.yandex.net
77.88.54.128	A	net-nsk-vlan2612.yandex.net
77.88.54.177	A	strm-novosibmts01.strm.yandex.net
77.88.54.178	A	strm-novosibmts02.strm.yandex.net
77.88.54.179	A	strm-novosibmts03.strm.yandex.net
77.88.54.180	A	strm-novosibmts04.strm.yandex.net
77.88.54.197	A	up01b.video.yandex.ru
77.88.54.198	A	up02b.video.yandex.ru
77.88.54.202	A	clip05b.video.yandex.net
77.88.55.50	A	www.yandex.ru
77.88.55.50	A	www.garaev.biz
77.88.55.55	A	mail.cardserver.pp.ua
77.88.55.55	A	virthost.org
77.88.55.55	A	xn--e1aihik.xn--p1ai
77.88.55.60	A	www.garaev.biz
77.88.55.60	A	yandex.ru
77.88.55.66	A+PTR	yandex.ru
77.88.55.66	A	www.yandex.ru
77.88.55.66	A	xn--e1aihik.xn--p1ai
77.88.55.70	A	www.yandex.ru
77.88.55.70	A	yandex.tj
77.88.55.77	A	yandex.ru
77.88.55.88	A	yandex.ru
77.88.56.103	A	rubidium-vlan901.yandex.net
77.88.56.126	A	gallium-vlan901.yandex.net
77.88.57.0	PTR	net-ugr-vlan632.yandex.net
77.88.57.177	A	tortois.yandex.net
77.88.57.178	A	agama.yandex.net
77.88.57.192	A	net-ugr34-vlan642.yandex.net
77.88.57.202	A	yacobot12a.yandex.ru
77.88.57.206	A	yacobot16a.yandex.ru
77.88.57.226	A	nastenka02d.yandex.ru
77.88.57.228	A	nastenka04d.yandex.ru
77.88.58.32	A+PTR	net-ugr-vlan569.yandex.net
77.88.58.32	A	net-ugrb-vlan569.yandex.net
77.88.58.128	PTR	net-ugr1-vlan629-2.yandex.net
77.88.58.132	A	77.88.58.132-nsk.dhcp.yndx.net
77.88.58.133	A	tamburin.yandex.ru
77.88.58.145	A	argo2.yandex.ru
77.88.58.145	A	argo3.yandex.ru
77.88.58.169	A	draw.yandex.ru
77.88.58.177	A	zephir.yandex.ru
77.88.58.179	A	astra.yandex.ru
77.88.58.187	A	wheatberry.yandex.ru
77.88.58.198	A+PTR	goodwin.yandex.net
77.88.59.122	A	catalogdb4.yandex.ru
77.88.59.128	PTR	afisha-dbm.corba.yandex.net
77.88.60.0	PTR	net-ugr-vlan640.yandex.net
77.88.60.32	PTR	attach9e.mail.yandex.net
77.88.60.43	A	spamstat.yandex.ru
77.88.60.64	PTR	so4e.mail.yandex.net
77.88.60.86	A	web116.yandex.ru
77.88.60.130	A	mdb304a.mail.yandex.net
77.88.60.131	A	mdb-backup2.mail.yandex.net
77.88.61.17	A	mdbdir4-vip.mail.yandex.net
77.88.61.34	A	oldweb-qa.yandex.ru
77.88.61.48	A	forward9.mail.yandex.net
77.88.61.128	A	net-ugr-vlan640.yandex.net
77.88.61.129	A+PTR	smtp2m.mail.yandex.net
77.88.61.132	PTR	webcorp1e.yandex-team.ru
77.88.61.134	A	docback01d.mail.yandex.net
77.88.61.135	A	rpop2e.mail.yandex.net
77.88.62.0	PTR	net-ugr-vlan659.yandex.net
77.88.63.157	A	s1300-809.yandex.net
77.88.63.222	A	s900-801.yandex.net