Robtex

Up: 188.123.192.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 188.123.224.0/20
Down right: 188.123.240.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
188.123.224.8	PTR	mail0.mos-stomat.ru
188.123.224.8	A	mail.tehmedik.ru
188.123.234.13	A+PTR	mail.aviatu.ru
188.123.234.13	A	mail.aviatu.org
188.123.234.13	A	mail.aviatu.com
188.123.234.93	A	bolodya.ru
188.123.234.119	A	sonyahon.net
188.123.234.189	A	sitos.ru
188.123.244.34	A	mx1.mmnt.ru
188.123.244.34	A	mx1.hitlist.ru
188.123.244.34	A	ns.rusetskaya.ru
188.123.248.103	A+PTR	nat01.comcor-tv.ru
188.123.250.6	PTR	linklevel.net
188.123.250.6	A	ns1.linklevel.net
188.123.250.6	A	humppalaki.linklevel.net
188.123.251.2	A	xn--80aqd3aft.xn--p1ai
188.123.251.2	A	home-113.com
188.123.251.6	PTR	bondarev.net
188.123.251.6	A	ivan.bondarev.net
188.123.251.6	A	www.bondarev.net
188.123.251.41	A	isona.me
188.123.251.41	A	label.it.cx
188.123.251.50	A	vergim.ru
188.123.251.128	A	www.rusbeer.ru
188.123.251.128	A	rusbeer.ru
188.123.251.128	A	argomento.ru