Robtex

Up: 103.13.172.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 103.13.172.0/24
Down right: 103.13.173.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
103.13.172.21	PTR	zz10313172021.userreserved.kddi.net.sg
103.13.172.21	A	onlimits.net
103.13.172.21	A	ns2.heartrise.co.jp
103.13.172.73	A	yamahaproductregistration.com
103.13.173.4	PTR	zz10313173004.userreserved.kddi.net.sg
103.13.173.22	PTR	zz10313173022.userreserved.kddi.net.sg
103.13.173.25	PTR	zz10313173025.userreserved.kddi.net.sg
103.13.173.38	PTR	zz10313173038.userreserved.kddi.net.sg
103.13.173.70	PTR	zz10313173070.userreserved.kddi.net.sg
103.13.173.92	PTR	zz10313173092.userreserved.kddi.net.sg
103.13.173.124	A+PTR	zz10313173124.userreserved.kddi.net.sg
103.13.173.171	A+PTR	zz10313173171.userreserved.kddi.net.sg
103.13.173.194	A+PTR	zz10313173194.userreserved.kddi.net.sg
103.13.173.236	A+PTR	zz10313173236.userreserved.kddi.net.sg