Robtex

Up: 173.0.48.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 173.0.48.0/25
Down right: 173.0.48.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
173.0.48.33	PTR	173.0.48.33.reverse.wowrack.com
173.0.48.34	A	macedo.info
173.0.48.39	A	ezhava.net
173.0.48.42	PTR	173.0.48.42.reverse.wowrack.com
173.0.48.42	A	mail.lidows.com
173.0.48.43	PTR	173.0.48.43.reverse.wowrack.com
173.0.48.43	A	educont.com.br
173.0.48.61	A	blog.roohot.com
173.0.48.61	A	roohot.com
173.0.48.62	PTR	ms1.mailsystem.biz
173.0.48.70	A	kuliang.com.au
173.0.48.80	A	mail.veryware.net
173.0.48.80	A	www.madouwo.com
173.0.48.81	A	ns1.centillion-fund.com
173.0.48.81	A	ns1.googol-plex.com
173.0.48.93	A	netri.co.in
173.0.48.93	A	ns3.pad2play.net
173.0.48.102	A	apps.virtualcity.com.au
173.0.48.102	A	pcscomputer.com.br
173.0.48.114	PTR	173.0.48.114.reverse.wowrack.com
173.0.48.114	A	www.idenyaflux.co.id
173.0.48.130	PTR	173.0.48.130.reverse.wowrack.com
173.0.48.130	A	us2.sx.safersoftware.net
173.0.48.131	PTR	173.0.48.131.reverse.wowrack.com
173.0.48.131	A	aspmx.hsmhc.com
173.0.48.146	PTR	173.0.48.146.reverse.wowrack.com
173.0.48.146	A	us2.sx.safersoftware.net
173.0.48.170	PTR	173.0.48.170.reverse.wowrack.com
173.0.48.170	A	us2.sx.safersoftware.net
173.0.48.170	A	dldx.org
173.0.48.188	PTR	173.0.48.188.reverse.wowrack.com
173.0.48.188	A	aminahalfajr.com
173.0.48.189	A+PTR	mail.primakom.co.id
173.0.48.220	PTR	smtp.us.naz.com
173.0.48.220	A	2.bdrthermea.pool.ntp.org
173.0.48.220	A	1.formlabs.pool.ntp.org
173.0.48.221	PTR	173.0.48.221.reverse.wowrack.com
173.0.48.221	A	www.thednstool.net
173.0.48.222	A	ns2.cityflimmern.de
173.0.48.226	PTR	173.0.48.226.reverse.wowrack.com
173.0.48.226	A	streamsy.online
173.0.48.242	PTR	173.0.48.242.reverse.wowrack.com