Robtex

Up: 77.233.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 77.233.0.0/22
Down right: 77.233.4.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
77.233.0.50	PTR	domsbs.ru
77.233.0.66	A+PTR	mx2.mmsbs.ru
77.233.0.69	A+PTR	mx3.mmsbs.ru
77.233.0.77	PTR	zimbra.camelotkrasnodar.ru
77.233.0.77	PTR	zimbra.grand-catering.ru
77.233.0.77	PTR	zimbra.hotelpremier.ru
77.233.0.98	PTR	mx.aprelit.xyz
77.233.0.98	A	mail.aprelit.xyz
77.233.0.98	A	aprelit.xyz
77.233.0.110	A+PTR	mail.resl.ru
77.233.0.110	A+PTR	mx.resl.ru
77.233.0.110	A	resl.ru
77.233.0.148	A+PTR	mail.park-europe.ru
77.233.0.179	A+PTR	krtec.ru
77.233.0.179	PTR	mail.krtec.ru
77.233.1.1	A+PTR	ns1.yug-link.ru
77.233.1.2	A+PTR	mayak23.ru
77.233.1.2	PTR	mxs0.yug-link.ru
77.233.1.2	PTR	relay-mxs0.yug-link.ru
77.233.1.19	A	yug-link.ru
77.233.1.19	A	krasnodar.yug-link.ru
77.233.1.21	A	link-mining.com
77.233.1.21	A	como-link.com
77.233.1.23	PTR	mail.regcmc.ru
77.233.1.23	A+PTR	regcmc.ru
77.233.1.254	PTR	krasnodar.yug-link.ru
77.233.2.1	A+PTR	ns2.yug-link.ru
77.233.3.10	A	saqqent.com
77.233.3.10	A	xn--b1acdng2abcang4bya.xn--p1ai
77.233.3.82	PTR	mail.erga-genset.com
77.233.3.82	A+PTR	mail.gazteh.ru
77.233.3.82	PTR	mail.inmesol.su
77.233.3.173	A	ci23.ru
77.233.3.187	A+PTR	kubanmarka.ru
77.233.3.211	A+PTR	smtp.stroyproject-xxi.ru
77.233.3.211	A	smtp.skkuban.net
77.233.3.211	A	smtp.sp21.net
77.233.4.2	A	speedtest.yug-link.ru
77.233.4.18	PTR	c7301-krasnodar.electro-com.ru
77.233.4.67	A+PTR	mail.rkn23.ru
77.233.4.67	A	rkn23.ru
77.233.4.133	PTR	mail.nceco.ru
77.233.4.142	A+PTR	domsbs.ru
77.233.4.142	A	*.52.162.domsbs.ru
77.233.4.142	A	ns.domsbs.ru
77.233.4.196	A+PTR	mail.ci23.ru
77.233.4.203	PTR	mx1.tabris.ru
77.233.4.254	A+PTR	mail.gaztransbank.ru
77.233.5.22	A+PTR	v-k-b.ru
77.233.5.22	A+PTR	mail.v-k-b.ru
77.233.5.22	A	www.v-k-b.ru
77.233.5.62	PTR	ns.sp21.net
77.233.5.62	PTR	mx.stroyproject-xxi.ru
77.233.5.114	A	mail.r23.center-inform.ru
77.233.5.120	PTR	redhost.su
77.233.5.120	A	nnc.su
77.233.5.120	A	mail.kubmarka.ru
77.233.5.121	A	kubanmarka.ru
77.233.5.155	A+PTR	mail.strike.ru
77.233.7.2	A+PTR	lotus.galleryk.ru
77.233.7.3	A	mx2.galleryk.ru
77.233.7.5	A	mx3.galleryk.ru