Robtex

Up: 185.51.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 185.51.8.0/22
Down right: 185.51.12.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
185.51.8.0	PTR	ip185051008000.rev.nessus.at
185.51.8.40	PTR	web25.easyname.com
185.51.8.50	PTR	web09.easyname.com
185.51.8.50	A	fashionmilabecker.com
185.51.8.50	A	viktor-karpinski.com
185.51.8.52	PTR	web11.easyname.com
185.51.8.54	PTR	web12.easyname.com
185.51.8.56	PTR	web13.easyname.com
185.51.8.56	A	taxi-neusiedl.com
185.51.8.56	A	heartbeattour.com
185.51.8.58	PTR	web14.easyname.com
185.51.8.60	PTR	web101.easyname.com
185.51.8.62	PTR	web201.easyname.com
185.51.8.64	PTR	web102.easyname.com
185.51.8.64	A	mail.hanlo-fertighaus.de
185.51.8.64	A	mail.hanlo.de
185.51.8.66	PTR	web103.easyname.com
185.51.8.68	PTR	web104.easyname.com
185.51.8.70	PTR	web15.easyname.com
185.51.8.72	PTR	web105.easyname.com
185.51.8.72	A	www.wolfsrachen.com
185.51.8.72	A	thefairyplay.com
185.51.8.76	PTR	web106.easyname.com
185.51.8.78	PTR	web16.easyname.com
185.51.8.80	PTR	web17.easyname.com
185.51.8.80	A	lealwo.com
185.51.8.80	A	www.ghassemloo.at
185.51.8.82	PTR	web18.easyname.com
185.51.8.84	PTR	web19.easyname.com
185.51.8.86	PTR	web20.easyname.com
185.51.8.88	A+PTR	web107.easyname.com
185.51.8.88	A	gartengarten.at
185.51.8.88	A	ichplus.at
185.51.8.90	PTR	web21.easyname.com
185.51.8.92	PTR	web22.easyname.com
185.51.8.94	PTR	web23.easyname.com
185.51.8.96	PTR	web24.easyname.com
185.51.8.96	A	wicked-house.com
185.51.8.96	A	costanortegc.com
185.51.8.105	PTR	ip185051008105.rev.nessus.at
185.51.8.105	A	grossberger-ge.org
185.51.8.105	A	www.unitherm.at
185.51.8.107	PTR	web26.easyname.com
185.51.8.109	PTR	web110.easyname.com
185.51.8.117	A	bwg.at
185.51.8.148	PTR	basekit.easyname.com
185.51.8.148	A	www.impulsgeberin.com
185.51.8.148	A	theodorechhean.com
185.51.9.22	A+PTR	mail.bogner.sh
185.51.9.22	A	www.bogner.sh
185.51.9.22	A	bogner.sh
185.51.9.25	A+PTR	mail.martinetz.info
185.51.9.98	A	nsi1.easyname.com
185.51.10.96	A	geomultimedia.eu
185.51.10.98	PTR	cogito.amauroteq.com
185.51.10.98	A	clubtool.net
185.51.10.149	A	312.at
185.51.10.164	PTR	mx.interface-wien.at
185.51.10.174	PTR	vm41573.cs.easyname.systems
185.51.10.190	PTR	vm39358.cs.easyname.systems
185.51.11.3	PTR	ip185051011003.rev.easyname.ch
185.51.11.3	A	praxis-kraus-rueegg.ch
185.51.11.3	A	tipcheckbasedinspections.com
185.51.11.210	A	nsi3.easyname.com
185.51.11.255	PTR	ip185051011255.rev.easyname.ch
185.51.12.10	A+PTR	fwto2.alenia.it
185.51.12.14	A+PTR	fwna1.alenia.it
185.51.12.24	A+PTR	mail4.aeronautica.alenia.it
185.51.12.25	A+PTR	mail4.alenia.it
185.51.12.27	A+PTR	imail.aeronautica.alenia.it
185.51.12.30	A+PTR	web-ex.alenia.it
185.51.12.39	A+PTR	mail2.alenia.it
185.51.12.40	A+PTR	mail2.aeronautica.alenia.it
185.51.12.41	A	mail2.aleniainc.com
185.51.12.43	A+PTR	mail1.aeronautica.alenia.it
185.51.12.44	A+PTR	mail1.alenia.it
185.51.12.50	A+PTR	crl.aeronautica.alenia.it
185.51.12.50	A	fileshare.aermacchi.it
185.51.12.51	A+PTR	ftp01.aeronautica.alenia.it
185.51.12.62	PTR	host62-12-static.51-185.alenia.it
185.51.12.62	A	mail5.aeronautica.alenia.it
185.51.12.65	A	webmeeting.leonardocompany.com
185.51.12.151	A	web.vvi.leonardocompany.com
185.51.12.254	PTR	host254-12-static.51-185.alenia.it
185.51.12.254	A	vpn01.aeronautica.alenia.it
185.51.13.10	A+PTR	fwto1.alenia.it
185.51.13.11	A+PTR	dns4.alenia.it
185.51.13.85	PTR	l00301c001954.leonardocompany.com
185.51.13.87	A+PTR	l00301c001956.leonardocompany.com
185.51.13.135	A	web.vvi.leonardocompany.com
185.51.14.10	PTR	host10-14-static.51-185.alenia.it
185.51.14.10	A	web.vvi.leonardocompany.com
185.51.15.100	PTR	host100-15-static.51-185.alenia.it