Robtex

Up: 121.44.0.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 121.44.4.0/23
Down right: 121.44.6.0/23

IP	Type	Hostname
121.44.4.8	A	ppp121-44-4-8.lns20.syd4.internode.on.net
121.44.4.57	A+PTR	ppp121-44-4-57.lns20.syd4.internode.on.net
121.44.5.13	PTR	ppp121-44-5-13.lns20.syd6.internode.on.net
121.44.5.23	A+PTR	ppp121-44-5-23.lns20.syd4.internode.on.net
121.44.5.38	A+PTR	ppp121-44-5-38.lns20.syd4.internode.on.net
121.44.5.67	A	mail.borderit.com.au
121.44.5.92	A+PTR	ppp121-44-5-92.lns20.syd4.internode.on.net
121.44.5.166	A+PTR	ppp121-44-5-166.lns20.syd4.internode.on.net
121.44.5.207	A+PTR	ppp121-44-5-207.lns20.syd4.internode.on.net
121.44.5.214	A+PTR	ppp121-44-5-214.lns20.syd4.internode.on.net
121.44.5.241	A+PTR	ppp121-44-5-241.lns20.syd4.internode.on.net
121.44.6.61	A+PTR	ppp121-44-6-61.lns20.syd4.internode.on.net
121.44.6.85	A+PTR	ppp121-44-6-85.lns20.syd4.internode.on.net
121.44.6.142	A+PTR	ppp121-44-6-142.lns20.syd4.internode.on.net
121.44.6.143	A+PTR	ppp121-44-6-143.lns20.syd4.internode.on.net
121.44.6.150	A+PTR	ppp121-44-6-150.lns20.syd4.internode.on.net
121.44.6.206	PTR	ppp121-44-6-206.lns20.syd6.internode.on.net
121.44.6.211	A+PTR	ppp121-44-6-211.lns20.syd4.internode.on.net
121.44.6.215	A+PTR	ppp121-44-6-215.lns20.syd4.internode.on.net
121.44.6.232	A+PTR	ppp121-44-6-232.lns20.syd4.internode.on.net
121.44.6.249	A	wikitrust.peacocktech.com
121.44.7.73	A+PTR	ppp121-44-7-73.lns20.syd4.internode.on.net
121.44.7.156	A+PTR	ppp121-44-7-156.lns20.syd4.internode.on.net
121.44.7.190	A	mail.404ters.com