Robtex

Up: 31.40.64.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 31.40.96.0/20
Down right: 31.40.112.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
31.40.96.2	A+PTR	ns2.usk1.net
31.40.97.39	A	alexrudi.com
31.40.97.39	A	mail.alexrudi.com
31.40.97.39	A	mail.lingvastudio.com
31.40.98.2	PTR	home.ighor.ru
31.40.98.2	A	pererva21.ru
31.40.98.2	A	gaz-kashirka.ru
31.40.98.216	A	mx.ternar.ru
31.40.98.216	A	ns1.avantport.ru
31.40.98.216	A	ns1.ternar.ru
31.40.98.246	A	falseteam.ru
31.40.99.196	A	ns1.usk1.net
31.40.100.35	A	laouman.ru
31.40.100.35	A	slava.club
31.40.100.35	A	ns2.dmdhost.ru
31.40.100.149	A	pri.ru
31.40.104.193	A	mail2.kya.kiev.ua
31.40.106.92	PTR	92.106.40.31.ukrtelebud.com.ua
31.40.106.156	A	perandr.com
31.40.107.114	PTR	114.107.40.31.ukrtelebud.com.ua
31.40.107.114	A	theindividualsa.ru
31.40.108.21	A	shedko.tk
31.40.108.117	A	anymouse.ws
31.40.108.162	PTR	162.108.40.31.ukrtelebud.com.ua
31.40.112.0	PTR	u0-r0.miass.multinex.ru
31.40.112.3	PTR	mail.miass.multinex.ru
31.40.112.4	A	fhead.org
31.40.112.4	A	mail.amenik.org
31.40.112.4	A	stmiass.ural.mts.ru
31.40.112.70	PTR	nat-70.miass.multinex.ru
31.40.112.122	A	fhead.org
31.40.112.122	A	mail.amenik.org
31.40.112.122	A	mail.sky-wind.ru
31.40.112.159	PTR	u159-r0.miass.multinex.ru
31.40.112.165	A+PTR	ns1.informbase.ru
31.40.112.165	A	informbase.ru
31.40.112.190	A+PTR	mail.uralaz.ru
31.40.112.190	A	ns2.uralaz.ru
31.40.112.191	PTR	u191-r0.miass.multinex.ru
31.40.112.192	A+PTR	uralaz.ru
31.40.112.192	A	exchange2.uralaz.ru
31.40.113.3	PTR	u3-r1.dynamic.miass.multinex.ru
31.40.113.40	PTR	u40-r1.dynamic.miass.multinex.ru
31.40.113.42	A+PTR	exchange.g-miass.ru
31.40.113.42	A	xn--80aplwa.xn--p1ai
31.40.113.42	A	www.g-miass.ru
31.40.113.55	PTR	kpd.miass.ru
31.40.113.92	PTR	u92-r1.dynamic.miass.multinex.ru
31.40.113.130	PTR	u130-r1.dynamic.miass.multinex.ru
31.40.113.130	A	www.s4miass.ru
31.40.113.130	A	s4miass.ru
31.40.114.9	PTR	u9-r2.dynamic.miass.multinex.ru
31.40.114.98	PTR	u98-r2.dynamic.miass.multinex.ru
31.40.114.202	PTR	u202-r2.dynamic.miass.multinex.ru
31.40.115.1	PTR	u1-r3.dynamic.miass.multinex.ru
31.40.115.96	PTR	u96-r3.dynamic.miass.multinex.ru
31.40.115.160	PTR	u160-r3.dynamic.miass.multinex.ru
31.40.115.194	PTR	u194-r3.dynamic.miass.multinex.ru
31.40.117.111	PTR	u111-r5.dynamic.miass.multinex.ru
31.40.118.18	PTR	u18-r6.dynamic.miass.multinex.ru
31.40.118.34	PTR	u34-r6.dynamic.miass.multinex.ru
31.40.118.60	PTR	u60-r6.dynamic.miass.multinex.ru
31.40.119.198	PTR	u198-r7.dynamic.miass.multinex.ru
31.40.120.19	PTR	u19-r8.dynamic.miass.multinex.ru
31.40.122.10	PTR	u10-r10.dynamic.miass.multinex.ru
31.40.125.25	PTR	u25-r13.dynamic.miass.multinex.ru
31.40.125.185	PTR	u185-r13.dynamic.miass.multinex.ru
31.40.127.57	PTR	u57-r15.dynamic.miass.multinex.ru
31.40.127.220	PTR	u220-r15.dynamic.miass.multinex.ru
31.40.127.246	A	alakorn.ru
31.40.127.249	PTR	u249-r15.dynamic.miass.multinex.ru
31.40.127.255	PTR	u255-r15.dynamic.miass.multinex.ru