Robtex

Up: 121.96.244.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 121.96.246.0/24
Down right: 121.96.247.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
121.96.246.53	PTR	121.96.246.53.bti.net.ph
121.96.246.178	PTR	121.96.246.178.bti.net.ph
121.96.246.179	PTR	121.96.246.179.bti.net.ph
121.96.246.181	PTR	121.96.246.181.bti.net.ph
121.96.246.185	PTR	121.96.246.185.bti.net.ph
121.96.246.187	PTR	121.96.246.187.bti.net.ph
121.96.246.190	PTR	121.96.246.190.bti.net.ph
121.96.246.192	PTR	121.96.246.192.bti.net.ph
121.96.246.213	PTR	121.96.246.213.bti.net.ph
121.96.246.221	PTR	121.96.246.221.bti.net.ph
121.96.246.223	PTR	121.96.246.223.bti.net.ph
121.96.246.228	PTR	121.96.246.228.bti.net.ph
121.96.246.231	PTR	121.96.246.231.bti.net.ph
121.96.246.249	PTR	121.96.246.249.bti.net.ph
121.96.246.254	PTR	121.96.246.254.bti.net.ph
121.96.247.23	PTR	121.96.247.23.bti.net.ph
121.96.247.33	PTR	barracuda.cepalco.com.ph
121.96.247.33	A+PTR	mail.cepalco.com.ph
121.96.247.33	A	ns1.cepalco.com.ph