Robtex

Up: 58.6.32.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 58.6.36.0/23
Down right: 58.6.38.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
58.6.36.7	A+PTR	dsl-58-6-36-7.nsw.westnet.com.au
58.6.36.7	A	www.lifeline-international.org
58.6.36.7	A	lifeline-international.org
58.6.36.95	PTR	dsl-58-6-36-95.nsw.westnet.com.au
58.6.36.144	PTR	dsl-58-6-36-144.nsw.westnet.com.au
58.6.36.144	A	mail.standrewscs.nsw.edu.au
58.6.36.211	A	mail.adas.org.au
58.6.37.72	A	tamworthapartments.com.au
58.6.37.119	PTR	mail.exelerate.com
58.6.37.132	PTR	walpolesurveying.com.au
58.6.37.186	PTR	mail.micropol.com.au
58.6.37.205	PTR	mail.bissap.com.au
58.6.37.212	A+PTR	mail3.borderexpress.com.au
58.6.37.232	A+PTR	mail.kilpatrickhatton.com.au
58.6.37.250	PTR	mail.atech.net.au
58.6.37.250	A	mail.tri-tel.com.au
58.6.37.250	A	*.tri-tel.com.au
58.6.38.4	A+PTR	dsl-58-6-38-4.nsw.westnet.com.au
58.6.38.5	A+PTR	dsl-58-6-38-5.nsw.westnet.com.au
58.6.38.9	A+PTR	dsl-58-6-38-9.nsw.westnet.com.au
58.6.38.10	A+PTR	dsl-58-6-38-10.nsw.westnet.com.au
58.6.38.16	A+PTR	dsl-58-6-38-16.nsw.westnet.com.au
58.6.38.19	A+PTR	dsl-58-6-38-19.nsw.westnet.com.au
58.6.38.20	A+PTR	dsl-58-6-38-20.nsw.westnet.com.au
58.6.38.24	A+PTR	dsl-58-6-38-24.nsw.westnet.com.au
58.6.38.25	A+PTR	dsl-58-6-38-25.nsw.westnet.com.au
58.6.38.27	A+PTR	dsl-58-6-38-27.nsw.westnet.com.au
58.6.38.29	A+PTR	dsl-58-6-38-29.nsw.westnet.com.au
58.6.38.30	A+PTR	dsl-58-6-38-30.nsw.westnet.com.au
58.6.38.35	A+PTR	dsl-58-6-38-35.nsw.westnet.com.au
58.6.38.36	A+PTR	dsl-58-6-38-36.nsw.westnet.com.au
58.6.38.38	A+PTR	dsl-58-6-38-38.nsw.westnet.com.au
58.6.38.46	A+PTR	dsl-58-6-38-46.nsw.westnet.com.au
58.6.38.48	A+PTR	dsl-58-6-38-48.nsw.westnet.com.au
58.6.38.51	A+PTR	dsl-58-6-38-51.nsw.westnet.com.au
58.6.38.54	A+PTR	dsl-58-6-38-54.nsw.westnet.com.au
58.6.38.58	A+PTR	dsl-58-6-38-58.nsw.westnet.com.au
58.6.38.59	A+PTR	dsl-58-6-38-59.nsw.westnet.com.au
58.6.38.61	A+PTR	dsl-58-6-38-61.nsw.westnet.com.au
58.6.38.64	A+PTR	dsl-58-6-38-64.nsw.westnet.com.au
58.6.38.65	A+PTR	dsl-58-6-38-65.nsw.westnet.com.au
58.6.38.67	A+PTR	dsl-58-6-38-67.nsw.westnet.com.au
58.6.38.74	A+PTR	dsl-58-6-38-74.nsw.westnet.com.au
58.6.38.77	A+PTR	dsl-58-6-38-77.nsw.westnet.com.au
58.6.38.78	A+PTR	dsl-58-6-38-78.nsw.westnet.com.au
58.6.38.81	PTR	mail.yourit.net.au
58.6.38.82	A+PTR	dsl-58-6-38-82.nsw.westnet.com.au
58.6.38.84	A+PTR	dsl-58-6-38-84.nsw.westnet.com.au
58.6.38.87	A+PTR	dsl-58-6-38-87.nsw.westnet.com.au
58.6.38.90	PTR	mail.harryssite.com
58.6.38.102	A+PTR	dsl-58-6-38-102.nsw.westnet.com.au
58.6.38.104	A+PTR	dsl-58-6-38-104.nsw.westnet.com.au
58.6.38.106	A+PTR	dsl-58-6-38-106.nsw.westnet.com.au
58.6.38.109	A+PTR	dsl-58-6-38-109.nsw.westnet.com.au
58.6.38.111	A+PTR	dsl-58-6-38-111.nsw.westnet.com.au
58.6.38.115	A+PTR	dsl-58-6-38-115.nsw.westnet.com.au
58.6.38.135	A+PTR	dsl-58-6-38-135.nsw.westnet.com.au
58.6.38.135	A	mail.valuenetwork.biz
58.6.38.138	A+PTR	dsl-58-6-38-138.nsw.westnet.com.au
58.6.38.138	A	mail.alburytravel.com.au
58.6.38.140	A+PTR	dsl-58-6-38-140.nsw.westnet.com.au
58.6.38.148	A+PTR	dsl-58-6-38-148.nsw.westnet.com.au
58.6.38.152	A+PTR	dsl-58-6-38-152.nsw.westnet.com.au
58.6.38.158	A+PTR	dsl-58-6-38-158.nsw.westnet.com.au
58.6.38.162	PTR	mail.jgs.com.au
58.6.38.177	A+PTR	dsl-58-6-38-177.nsw.westnet.com.au
58.6.38.178	A+PTR	dsl-58-6-38-178.nsw.westnet.com.au
58.6.38.181	A+PTR	dsl-58-6-38-181.nsw.westnet.com.au
58.6.38.182	A+PTR	dsl-58-6-38-182.nsw.westnet.com.au
58.6.38.183	A+PTR	dsl-58-6-38-183.nsw.westnet.com.au
58.6.38.200	A+PTR	dsl-58-6-38-200.nsw.westnet.com.au
58.6.38.208	A+PTR	dsl-58-6-38-208.nsw.westnet.com.au
58.6.38.212	A+PTR	dsl-58-6-38-212.nsw.westnet.com.au
58.6.38.216	A+PTR	dsl-58-6-38-216.nsw.westnet.com.au
58.6.38.221	A+PTR	dsl-58-6-38-221.nsw.westnet.com.au
58.6.38.227	A+PTR	dsl-58-6-38-227.nsw.westnet.com.au
58.6.38.239	A+PTR	dsl-58-6-38-239.nsw.westnet.com.au
58.6.38.240	A	dsl-58-6-38-240.nsw.westnet.com.au
58.6.38.242	A+PTR	dsl-58-6-38-242.nsw.westnet.com.au
58.6.39.16	A+PTR	remote.byronbayaccom.net
58.6.39.16	A	mail.byronbayaccom.net
58.6.39.40	A	mail.vhr.net.au
58.6.39.42	A	premium.net.au
58.6.39.112	PTR	eventsretail.com.au
58.6.39.158	A	mail.robfox.biz
58.6.39.201	A	mail.bestbusinesspractice.com.au
58.6.39.251	A	mail.elanora.biz