Robtex

Up: 203.58.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.58.8.0/23
Down right: 203.58.10.0/23

IP	Type	Hostname
203.58.8.2	PTR	mail.langports.com
203.58.8.26	A+PTR	203-58-8-26.static.tpgi.com.au
203.58.8.137	PTR	mail.ausnetworking.com.au
203.58.8.137	A	mail.freshandhealthy.com.au
203.58.8.137	A	ns0.ausnetworking.com.au
203.58.8.138	PTR	mailb.ausnetworking.com.au
203.58.8.138	A	applied-solutions.com.au
203.58.8.138	A	hjr.com.au
203.58.8.139	PTR	203-58-8-139.static.tpgi.com.au
203.58.8.141	PTR	203-58-8-141.static.tpgi.com.au
203.58.8.158	A	mail.bluewateronthebeach.com
203.58.8.158	A	bluewateronthebeach.com
203.58.8.174	A	203-58-8-174.static.tpgi.com.au
203.58.9.170	A	203-58-9-170.static.tpgi.com.au
203.58.9.178	PTR	203-58-9-178.static.tpgi.com.au
203.58.9.178	A	isonline.ws
203.58.9.178	A	www.isonline.ws
203.58.9.184	PTR	203-58-9-184.static.tpgi.com.au
203.58.9.184	A	metisc.com
203.58.9.186	PTR	203-58-9-186.static.tpgi.com.au
203.58.9.186	A	metisc.com.au
203.58.10.12	PTR	dialup11.actonline.com.au
203.58.10.24	PTR	dialup23.actonline.com.au
203.58.10.35	PTR	elec.ieaust.org.au
203.58.10.172	PTR	ecomail.ecolab.com
203.58.10.250	PTR	mail.lhmu.org.au
203.58.11.29	A+PTR	bri-gym-gw.tpgi.com.au
203.58.11.43	A	ath-bri-gw.tpgi.com.au
203.58.11.105	PTR	sou-bri-gw.tpgi.com.au