Robtex

Up: 91.215.36.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 91.215.36.0/24
Down right: 91.215.37.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.215.36.1	A	null.pochta.ru
91.215.36.21	PTR	r00exedge01.main.russianpost.ru
91.215.36.22	A	r00exedge02.main.russianpost.ru
91.215.36.23	A	r00exedge03.main.russianpost.ru
91.215.36.24	A	in.russianpost.ru
91.215.36.35	A	asurpkd.russianpost.ru
91.215.36.38	A+PTR	uprim.russianpost.ru
91.215.36.39	A+PTR	ns1.russianpost.ru
91.215.36.40	A+PTR	ns2.russianpost.ru
91.215.36.43	A	xn--80a1acny.xn--p1ai
91.215.36.43	A	www.ipom.ru
91.215.36.43	A	www.xn----7sbza0acdlkaf3d.xn--p1ai
91.215.36.50	A+PTR	info.russianpost.ru
91.215.36.57	A	r00smtpmm.russianpost.ru
91.215.36.62	A+PTR	smart2.russianpost.ru
91.215.36.63	A+PTR	smart3.russianpost.ru
91.215.36.71	A+PTR	gw-2.caotus.ru
91.215.36.72	PTR	slapd.caotus.ru
91.215.36.73	PTR	slurpd.caotus.ru
91.215.36.74	PTR	www.elpay.ru
91.215.36.74	A	ns.elpay.ru
91.215.36.75	A+PTR	mx1.caotus.ru
91.215.36.76	A+PTR	mx2.caotus.ru
91.215.36.77	A+PTR	postman.caotus.ru
91.215.36.78	A+PTR	envio.caotus.ru
91.215.36.84	A+PTR	gw-1.caotus.ru
91.215.36.92	A	vinfo.russianpost.ru
91.215.36.115	A+PTR	smart1.russianpost.ru
91.215.36.129	A	new.elpay.ru
91.215.36.159	A	r00exedge01.main.russianpost.ru
91.215.36.160	A	r00exedge02.main.russianpost.ru
91.215.36.177	A	www.ipom.ru
91.215.36.177	A	www.xn----7sbza0acdlkaf3d.xn--p1ai
91.215.36.177	A	fcl.russianpost.ru
91.215.36.178	A	www.ipom.ru
91.215.36.178	A	www.xn----7sbza0acdlkaf3d.xn--p1ai
91.215.36.178	A	fcl.russianpost.ru
91.215.36.185	A	r00gcjvm01.main.russianpost.ru
91.215.36.191	A	market.pochta.ru
91.215.36.191	A	pssrp.pochta.ru
91.215.36.211	A	r00exedge03.main.russianpost.ru
91.215.36.213	A+PTR	r00easopsgmmq.main.russianpost.ru
91.215.37.21	A+PTR	d01exedge01.main.russianpost.ru
91.215.37.22	A+PTR	d01exedge02.main.russianpost.ru
91.215.37.39	A+PTR	dc-ns1.russianpost.ru
91.215.37.57	A	d01smtpmm.russianpost.ru
91.215.37.62	A	dc-smart2.russianpost.ru
91.215.37.63	A	dc-smart3.russianpost.ru
91.215.37.90	A	katori.pochta.ru
91.215.37.91	A	katori.pochta.ru
91.215.37.115	A+PTR	dc-smart1.russianpost.ru
91.215.37.200	A	abon.russianpost.ru
91.215.37.235	A	pochta.ru
91.215.37.236	A	pochta.ru
91.215.37.237	A	pochta.ru
91.215.37.238	A	pochta.ru
91.215.37.245	A	tracking.russianpost.ru