Robtex

Up: 192.243.228.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 192.243.228.0/26
Down right: 192.243.228.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.243.228.1	PTR	r1.campaign.adobe.com
192.243.228.1	A	your.offers.dominos.com
192.243.228.1	A	communications.novonordiskinfo.com
192.243.228.2	A+PTR	r2.p27.neolane.net
192.243.228.2	A	b.mx.p27.neolane.net
192.243.228.26	A+PTR	r26.email.penfed.org
192.243.228.27	A+PTR	r27.email.penfed.org
192.243.228.28	A+PTR	r28.email.penfed.org
192.243.228.35	PTR	r35.email.davidyurman.com
192.243.228.35	A	travelocity.campaign.adobe.com
192.243.228.35	A	webproxy-lb-orb2.neolane.net
192.243.228.39	A+PTR	r39.email.naturallifewholesale.com
192.243.228.44	A+PTR	r44.dm.whirlpool.com
192.243.228.45	A+PTR	r45.dm.whirlpool.com
192.243.228.46	A+PTR	r46.dm.whirlpool.com
192.243.228.47	A+PTR	r47.dm.whirlpool.com
192.243.228.48	A+PTR	r48.dm.whirlpool.com
192.243.228.49	A+PTR	r49.dm.whirlpool.com
192.243.228.50	A+PTR	r50.dm.whirlpool.com
192.243.228.51	A+PTR	r51.dm.whirlpool.com
192.243.228.57	A+PTR	r57.email.wegmans.com
192.243.228.58	A+PTR	r58.email.wegmans.com
192.243.228.59	A+PTR	r59.email.wegmans.com
192.243.228.60	A+PTR	r60.email.wegmans.com
192.243.228.66	A+PTR	r66.e.haascnc.com
192.243.228.67	A+PTR	r67.e.haascnc.com
192.243.228.68	A+PTR	r68.e.haascnc.com
192.243.228.69	A+PTR	r69.e.haascnc.com
192.243.228.70	A+PTR	r70.e.1800contacts.com
192.243.228.71	A+PTR	r71.e.1800contacts.com
192.243.228.72	A+PTR	r72.e.1800contacts.com
192.243.228.73	A+PTR	r73.e.1800contacts.com
192.243.228.75	A+PTR	r75.e.1800contacts.com
192.243.228.83	A+PTR	r83.ifly.southwest.com
192.243.228.84	A+PTR	r84.ifly.southwest.com
192.243.228.87	A+PTR	r87.info.subaru.com
192.243.228.88	A+PTR	r88.info.subaru.com
192.243.228.89	A+PTR	r89.news.subaru.com
192.243.228.90	A+PTR	r90.news.subaru.com
192.243.228.91	A+PTR	r91.news.subaru.com