Robtex

Up: 74.54.240.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 74.54.244.0/23
Down right: 74.54.246.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
74.54.244.0	A+PTR	0.f4.364a.static.theplanet.com
74.54.244.1	A	1.f4.364a.static.theplanet.com
74.54.244.76	A+PTR	4c.f4.364a.static.theplanet.com
74.54.244.130	PTR	nutshellmail.com
74.54.244.131	A	mail.nutshellmail.com
74.54.244.132	A+PTR	smtp-out-01.nutshellmail.com
74.54.244.137	PTR	smtp-out-06.nutshellmail.com
74.54.244.141	PTR	test.nutshellmail.com
74.54.244.171	PTR	florists.com
74.54.244.171	A	remindmeplease.com
74.54.244.172	PTR	whiteoaksresort.com
74.54.244.172	A	www.whiteoaks.on.ca
74.54.244.187	A	mail.patiofreshvegetables.com
74.54.244.187	A	ns.patiofreshvegetables.com
74.54.244.187	A	patiofreshvegetables.com
74.54.245.0	A+PTR	0.f5.364a.static.theplanet.com
74.54.245.4	PTR	4.f5.364a.static.theplanet.com
74.54.245.130	A+PTR	82.f5.364a.static.theplanet.com
74.54.245.130	A	mail.atomixproductions.com
74.54.245.184	A	gblreg.com
74.54.245.184	A	gfrchk.com
74.54.245.195	PTR	panacore.net
74.54.245.225	A	e1.f5.364a.static.theplanet.com
74.54.246.0	A+PTR	0.f6.364a.static.theplanet.com
74.54.246.34	PTR	www.djbooth.net
74.54.246.94	PTR	kazaa.com
74.54.246.193	A	mail.bowlpass.com
74.54.246.194	A	abtrewards.com
74.54.246.194	A	charsamrewards.com
74.54.246.196	A	totalfundraiser.com
74.54.246.197	A	mail.finderskeeperscard.net
74.54.246.197	A	finderskeeperscard.org
74.54.246.197	A	mail.finderskeeperscard.org
74.54.246.201	A	bowlpass.com
74.54.246.204	A	mail.tlsrewards.com
74.54.246.205	PTR	cd.f6.364a.static.theplanet.com
74.54.246.205	A	rethinkloyalty.net
74.54.246.205	A	givingpointrewards.com
74.54.246.209	A	cmsloyalty.com
74.54.246.210	PTR	d2.f6.364a.static.theplanet.com
74.54.246.210	A	mail.goacg.net
74.54.247.0	A+PTR	0.f7.364a.static.theplanet.com
74.54.247.6	A	6.f7.364a.static.theplanet.com
74.54.247.31	A	1f.f7.364a.static.theplanet.com
74.54.247.37	A	25.f7.364a.static.theplanet.com
74.54.247.132	A+PTR	84.f7.364a.static.theplanet.com
74.54.247.166	PTR	www.dupontregistry.com
74.54.247.168	PTR	highlineexchange.com