Robtex

Up: 216.145.218.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 216.145.219.0/25
Down right: 216.145.219.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.145.219.3	A	mailout-219-3.fitesters.com
216.145.219.5	A	*.profitpump.net
216.145.219.5	A	mailout-219-5.fitesters.com
216.145.219.5	A	fga2199.profitpump.net
216.145.219.6	PTR	mail.ump-ns.com
216.145.219.8	A	mailout-219-8.fitesters.com
216.145.219.9	PTR	ns2.fun-family-mail.com
216.145.219.9	A	mailout-219-9.fitesters.com
216.145.219.13	PTR	ns1.online-e-marketing.com
216.145.219.25	A	mailout-219-25.fitesters.com
216.145.219.26	A	mailout-219-26.fitesters.com
216.145.219.27	A	mailout-219-27.fitesters.com
216.145.219.28	PTR	mailout-219-28.newstimefriends.com
216.145.219.28	A	mailout-219-28.fitesters.com
216.145.219.29	A	mailout-219-29.fitesters.com
216.145.219.30	A	mailout-219-30.fitesters.com
216.145.219.31	A	mailout-219-31.fitesters.com
216.145.219.32	A	mailout-219-32.fitesters.com
216.145.219.33	A	mailout-219-33.fitesters.com
216.145.219.43	A	mailout-219-43.fitesters.com
216.145.219.44	A	mailout-219-44.fitesters.com
216.145.219.45	A	mailout-219-45.fitesters.com
216.145.219.46	A	mailout-219-46.fitesters.com
216.145.219.47	A	mailout-219-47.fitesters.com
216.145.219.48	A	mailout-219-48.fitesters.com
216.145.219.49	A	mailout-219-49.fitesters.com
216.145.219.50	A	mailout-219-50.fitesters.com
216.145.219.51	A	mailout-219-51.fitesters.com
216.145.219.70	A	mailout-219-70.fitesters.com
216.145.219.71	A	mailout-219-71.fitesters.com
216.145.219.72	A	mailout-219-72.fitesters.com
216.145.219.73	A	mailout-219-73.fitesters.com
216.145.219.74	PTR	mailout-219-74.enewsdailyupdate.com
216.145.219.74	A	mailout-219-74.fitesters.com
216.145.219.75	A	mailout-219-75.fitesters.com
216.145.219.76	A	mailout-219-76.fitesters.com
216.145.219.77	A	mailout-219-77.fitesters.com
216.145.219.78	A	mailout-219-78.fitesters.com
216.145.219.79	A	mailout-219-79.fitesters.com
216.145.219.80	A	mailout-219-80.fitesters.com
216.145.219.81	A	mailout-219-81.fitesters.com
216.145.219.82	A	mailout-219-82.fitesters.com
216.145.219.83	A	mailout-219-83.fitesters.com
216.145.219.84	A	mailout-219-84.fitesters.com
216.145.219.85	A	mailout-219-85.fitesters.com
216.145.219.86	A	mailout-219-86.fitesters.com
216.145.219.87	A	mailout-219-87.fitesters.com
216.145.219.88	A	mailout-219-88.fitesters.com
216.145.219.89	A	mailout-219-89.fitesters.com
216.145.219.90	A	mailout-219-90.fitesters.com
216.145.219.91	A	mailout-219-91.fitesters.com
216.145.219.92	A	mailout-219-92.fitesters.com
216.145.219.93	A	mailout-219-93.fitesters.com
216.145.219.94	A	mailout-219-94.fitesters.com
216.145.219.95	A	mailout-219-95.fitesters.com
216.145.219.96	A	mailout-219-96.fitesters.com
216.145.219.97	A	mailout-219-97.fitesters.com
216.145.219.212	PTR	endpoint-dat-usc.mimecast.com