Robtex

Up: 74.81.81.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 74.81.81.128/26
Down right: 74.81.81.192/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
74.81.81.128	A+PTR	business2.namecheaphosting.com
74.81.81.128	A	nb102.namecheaphosting.com
74.81.81.129	PTR	business2.namecheaphosting.com
74.81.81.130	PTR	business2.namecheaphosting.com
74.81.81.131	PTR	mail.connectionmodel.com
74.81.81.132	PTR	espanja.org
74.81.81.134	PTR	hackerinstitute.com
74.81.81.144	PTR	host1.registrar-servers.com
74.81.81.144	A	ns1.networks-webdesign-computers.com
74.81.81.144	A	elysejohns.com
74.81.81.145	PTR	host1.registrar-servers.com
74.81.81.146	PTR	iclogistics.com
74.81.81.147	PTR	host1.registrar-servers.com
74.81.81.148	PTR	host1.registrar-servers.com
74.81.81.149	PTR	host1.registrar-servers.com
74.81.81.150	PTR	hosteroo.net
74.81.81.151	PTR	da3bard.com
74.81.81.152	PTR	spcodes.com
74.81.81.153	PTR	ipixelswebhosting.com
74.81.81.154	PTR	azhost.info
74.81.81.155	PTR	mapv.com
74.81.81.156	PTR	robertolai.com
74.81.81.157	PTR	bishalbangla.net
74.81.81.158	PTR	golfcartonline.com
74.81.81.159	PTR	tunisia-share.info
74.81.81.160	PTR	hameloon.net
74.81.81.161	PTR	inforsoft.net.ec
74.81.81.162	PTR	discountpl.us
74.81.81.163	PTR	daytonawebinc.com
74.81.81.164	PTR	crofthost.com
74.81.81.165	PTR	refurbishedgolfcart.com
74.81.81.166	PTR	getgeeker.com
74.81.81.167	PTR	24hrsexstore.com
74.81.81.168	PTR	golfcartsonline.com
74.81.81.169	PTR	indianpharmacy.me
74.81.81.170	PTR	allmat.com
74.81.81.171	PTR	indianpharmacy.org
74.81.81.172	PTR	fitforafeast.com
74.81.81.172	A	ns1.fitforafeast.com
74.81.81.173	PTR	starpleasures.com
74.81.81.174	PTR	adultpartygags.com
74.81.81.175	PTR	pellegrinetti.com
74.81.81.176	PTR	latestonthenet.com
74.81.81.177	PTR	ashnet.org
74.81.81.178	PTR	aurmonedelingouri.com
74.81.81.179	PTR	webi20.com
74.81.81.180	PTR	juliew8.com
74.81.81.181	PTR	chinesewebhost.com
74.81.81.181	A	gloveman.com.tw
74.81.81.182	PTR	filehosts.ca
74.81.81.183	PTR	host1.registrar-servers.com
74.81.81.184	PTR	cstaunch.com
74.81.81.185	PTR	blogtasarim.net
74.81.81.186	PTR	green4svc.com
74.81.81.187	PTR	websearch1.com
74.81.81.188	PTR	enhoster.com
74.81.81.189	PTR	al-taif.net
74.81.81.190	PTR	hullservers.com
74.81.81.191	PTR	arattauna.com
74.81.81.191	A	ns2.arattauna.com
74.81.81.192	PTR	corrupthosting.com
74.81.81.193	PTR	digitrendz.com
74.81.81.194	PTR	designcrafts.org
74.81.81.195	PTR	monsieurmicro.com
74.81.81.196	PTR	protecteddns.org
74.81.81.197	PTR	steamdesigns.com
74.81.81.198	PTR	host1.registrar-servers.com
74.81.81.199	PTR	zxwr.com
74.81.81.200	PTR	webleck.com
74.81.81.201	PTR	efuturehosting.com
74.81.81.202	PTR	luxuryphoneshop.com
74.81.81.203	PTR	taifnet.net
74.81.81.204	PTR	tss-hosting.com
74.81.81.204	A	ns2.networks-webdesign-computers.com
74.81.81.205	PTR	profitavenuehost.com
74.81.81.206	PTR	host1.registrar-servers.com
74.81.81.207	PTR	ipmi.r1.namecheaphosting.com
74.81.81.208	PTR	spielbyweb.com
74.81.81.209	PTR	spielbyweb.com
74.81.81.212	PTR	emailbusinessbooster.com
74.81.81.214	PTR	ttcpk.com
74.81.81.223	PTR	wh-landscaping.com
74.81.81.224	A+PTR	mysql-br03.web-hosting.com
74.81.81.225	PTR	mail.tekops.com
74.81.81.226	PTR	host1.registrar-servers.com
74.81.81.228	A	hostmaster.0x2d.com
74.81.81.229	PTR	server1.dieclan.us
74.81.81.231	PTR	voyages.fr
74.81.81.235	PTR	adpostingsecrets.com
74.81.81.235	A	hostmaster.byte-bot.com
74.81.81.235	A	bot.byte-bot.com
74.81.81.238	PTR	kofiapress.com
74.81.81.239	PTR	server1.rynoweb.com
74.81.81.240	PTR	kingslwxxxx.com
74.81.81.241	PTR	web-yours.com
74.81.81.243	PTR	server1.hofarlington.org
74.81.81.246	PTR	epos-imaginaire.com
74.81.81.251	PTR	server1.citalsa.com
74.81.81.252	PTR	mail.citalsa.com
74.81.81.252	A	mail.vorteilscode.biz