Robtex

Up: 192.243.228.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.243.228.0/25
Down right: 192.243.228.128/25
(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
192.243.228.139	A+PTR	r139.credzcartoes.com.br
192.243.228.141	A+PTR	r141.info.adobesystems.com
192.243.228.142	A+PTR	r142.info.adobesystems.com
192.243.228.143	A+PTR	r143.info.adobesystems.com
192.243.228.145	A	r145.info.adobesystems.com
192.243.228.155	A+PTR	r155.email.slickdeals.net
192.243.228.165	A+PTR	r165.latest.newsmax.com
192.243.228.166	A+PTR	r166.latest.newsmax.com
192.243.228.169	A+PTR	r169.latest.newsmax.com
192.243.228.173	A+PTR	r173.latest.newsmax.com
192.243.228.174	A+PTR	r174.latest.newsmax.com
192.243.228.176	A+PTR	r176.latest.newsmax.com
192.243.228.177	A+PTR	r177.latest.newsmax.com
192.243.228.178	A+PTR	r178.latest.newsmax.com
192.243.228.179	A+PTR	r179.latest.newsmax.com
192.243.228.180	A+PTR	r180.latest.newsmax.com
192.243.228.181	A+PTR	r181.latest.newsmax.com
192.243.228.184	A+PTR	r184.latest.newsmax.com
192.243.228.185	A+PTR	r185.latest.newsmax.com
192.243.228.186	A+PTR	r186.latest.newsmax.com
192.243.228.187	A+PTR	r187.latest.newsmax.com
192.243.228.188	A+PTR	r188.latest.newsmax.com
192.243.228.189	A+PTR	r189.latest.newsmax.com
192.243.228.190	A+PTR	r190.latest.newsmax.com
192.243.228.191	A+PTR	r191.latest.newsmax.com
192.243.228.192	A+PTR	r192.latest.newsmax.com
192.243.228.193	A+PTR	r193.latest.newsmax.com
192.243.228.194	A+PTR	r194.latest.newsmax.com
192.243.228.195	A+PTR	r195.latest.newsmax.com
192.243.228.222	PTR	r222.usa.uniqlo.com
192.243.228.222	A	a.mx.p33.neolane.net
192.243.228.223	A+PTR	r223.vacations.disneydestinations.com
192.243.228.223	A	b.mx.p33.neolane.net
192.243.228.224	A+PTR	r224.vacations.disneydestinations.com
192.243.228.225	A+PTR	r225.vacations.disneydestinations.com
192.243.228.226	A+PTR	r226.vacations.disneydestinations.com
192.243.228.226	A	a.mx.p37.neolane.net
192.243.228.227	A+PTR	r227.vacations.disneydestinations.com
192.243.228.227	A	b.mx.p37.neolane.net
192.243.228.228	A+PTR	r228.vacations.disneydestinations.com
192.243.228.229	PTR	r229.emails.disneyvactllc.com
192.243.228.234	A+PTR	r234.internal.mdanderson.org
192.243.228.234	A	a.mx.p52.neolane.net
192.243.228.235	A+PTR	r235.e.feld-inc.com
192.243.228.235	A	b.mx.p52.neolane.net
192.243.228.236	A+PTR	r236.e.feld-inc.com
192.243.228.236	A	a.mx.p53.neolane.net
192.243.228.237	A+PTR	r237.e.feld-inc.com
192.243.228.237	A	b.mx.p53.neolane.net
192.243.228.238	A+PTR	r238.e.feld-inc.com
192.243.228.239	A+PTR	r239.em.disneyonice.com
192.243.228.241	A+PTR	r241.e.feld-inc.com
192.243.228.243	A+PTR	r243.e.feld-inc.com