Robtex

Up: 81.16.112.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 81.16.112.0/22
Down right: 81.16.116.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.16.112.1	A+PTR	s1.wimax.ru
81.16.112.2	PTR	www.wimax.ru
81.16.112.3	PTR	mail1.wimax.ru
81.16.112.3	A	mail.svf.ru
81.16.112.4	A	watchdog.wimax.ru
81.16.112.4	A	noc.wimax.ru
81.16.112.8	A+PTR	nut2.starttelecom.ru
81.16.112.8	A	lg.starttelecom.ru
81.16.112.9	A+PTR	term.starttelecom.ru
81.16.112.11	A+PTR	nut1.starttelecom.ru
81.16.112.25	A	mx.starttelecom.ru
81.16.112.29	A	pix-1.m9.starttelecom.ru
81.16.112.34	A	rad.starttelecom.ru
81.16.113.99	PTR	tt.starttelecom.ru
81.16.113.120	PTR	www.starttelecom.ru
81.16.113.120	A	spb.starttelecom.ru
81.16.113.177	A	sonnar.starttelecom.ru
81.16.113.190	A	ns.oryolmetals.com
81.16.114.3	A	voice.wimax.ru
81.16.114.33	A+PTR	mvts-start01.starttelecom.ru
81.16.114.41	A+PTR	ambs2.starttelecom.ru
81.16.114.62	A	mvts-suk01.starttelecom.ru
81.16.114.99	A	mvts-exa.starttelecom.ru
81.16.114.99	A	mvts-exa01.starttelecom.ru
81.16.115.3	PTR	cs-2.m9.starttelecom.ru
81.16.115.5	A	sw-1.bhv.wimax.ru
81.16.115.33	PTR	host1.soes.ru
81.16.115.35	PTR	ns.soes.ru
81.16.115.35	PTR	ns.svs1.ru
81.16.115.36	A	mx.svs1.ru
81.16.115.43	PTR	host11.soes.ru
81.16.115.44	A	terafica.ir
81.16.115.176	PTR	fakon-nat176.starttelecom.ru
81.16.116.1	PTR	ns2.wimax.ru
81.16.116.58	PTR	mail.shgsm.ru
81.16.117.181	A	mark-10g.starttelecom.ru
81.16.117.182	A	gw-mark-10g.starttelecom.ru
81.16.117.213	A	www.dale.ir
81.16.117.213	A	www.faria.ir
81.16.118.73	A	myvm.ir
81.16.118.73	A	ns.kad313.ir
81.16.118.73	A	ns.myvm.ir
81.16.118.131	PTR	mail.smolen.ru
81.16.119.77	A+PTR	gd-nas02.starttelecom.ru