Robtex

Up: 198.58.81.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 198.58.81.128/26
Down right: 198.58.81.192/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
198.58.81.140	PTR	198.58.81.140-static.reverse.mysitehosted.com
198.58.81.145	PTR	198.58.81.145-static.reverse.mysitehosted.com
198.58.81.145	A	tigard-or.gov
198.58.81.146	PTR	198.58.81.146-static.reverse.mysitehosted.com
198.58.81.146	A	mmhrc.ca
198.58.81.146	A	ns2.multi769.hostpapavps.com
198.58.81.149	PTR	stats.onpoi796.hostpapavps.com
198.58.81.149	A	ns2.onpoi796.hostpapavps.com
198.58.81.158	PTR	198.58.81.158-static.reverse.mysitehosted.com
198.58.81.158	A	hvacmfg.com
198.58.81.188	PTR	iguana.arvixe.com
198.58.81.192	PTR	oyster.arvixe.com
198.58.81.194	PTR	newt.arvixe.com
198.58.81.194	A	rfidstore.eu
198.58.81.196	PTR	cheetah.arvixe.com
198.58.81.196	A	ns2.linuxwindowsnme.com
198.58.81.198	PTR	norma849.hostpapavps.com
198.58.81.200	A+PTR	websi491.hostpapavps.com
198.58.81.202	PTR	crayon.mysitehosted.com
198.58.81.204	PTR	divider.mysitehosted.com
198.58.81.204	A	ns1.bsafehost.com
198.58.81.207	PTR	198.58.81.207-static.reverse.mysitehosted.com
198.58.81.207	A	dc-f8773338.yuncelue.com
198.58.81.208	PTR	stats.ixia.arvixe.com
198.58.81.208	A	cfyfl.org
198.58.81.208	A	cfyfl.net
198.58.81.209	PTR	mail.ixia.arvixe.com
198.58.81.238	PTR	stats.pink.mysitehosted.com
198.58.81.238	A	maureencox.com
198.58.81.238	A	standardliquors.com
198.58.81.239	PTR	mail.pink.mysitehosted.com
198.58.81.239	A	mail.cata.co.in
198.58.81.239	A	mail.blackwhite.co.il
198.58.81.240	PTR	puffin.arvixe.com
198.58.81.241	PTR	rose.arvixe.com
198.58.81.242	PTR	elk.arvixe.com
198.58.81.244	PTR	caribou.arvixe.com
198.58.81.245	PTR	toucan.arvixe.com
198.58.81.246	PTR	seagull.arvixe.com
198.58.81.249	PTR	crab.arvixe.com
198.58.81.250	PTR	lead.mysitehosted.com