Robtex

Up: 203.121.56.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 203.121.58.0/24
Down right: 203.121.59.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.121.59.12	PTR	cache.google.com
203.121.59.12	A	r1---sn-uphxqvujvh-30al.googlevideo.com
203.121.59.12	A	r1.sn-uphxqvujvh-30al.gvt1.com
203.121.59.13	PTR	cache.google.com
203.121.59.13	A	r2.sn-uphxqvujvh-30al.gvt1.com
203.121.59.13	A	r2.sn-uphxqvujvh-30al.googlevideo.com
203.121.59.14	A	r3.sn-uphxqvujvh-30al.googlevideo.com
203.121.59.14	A	r3---sn-uphxqvujvh-30al.gvt1.com
203.121.59.15	PTR	cache.google.com
203.121.59.15	A	r4---sn-uphxqvujvh-30al.gvt1.com
203.121.59.15	A	r4---sn-uphxqvujvh-30al.googlevideo.com
203.121.59.19	PTR	cache.google.com
203.121.59.42	PTR	cache.google.com
203.121.59.59	PTR	cache.google.com
203.121.59.74	PTR	cpng-r2-a74.time.net.my
203.121.59.80	PTR	cpng-r2-a80.time.net.my
203.121.59.81	PTR	cpng-r2-a81.time.net.my
203.121.59.140	PTR	cpng-r2-a140.time.net.my
203.121.59.140	A	r1.sn-uphxqvujvh-30as.googlevideo.com
203.121.59.140	A	r1---sn-uphxqvujvh-30as.gvt1.com
203.121.59.141	PTR	cpng-r2-a141.time.net.my
203.121.59.141	A	r2.sn-uphxqvujvh-30as.googlevideo.com
203.121.59.141	A	r2.sn-uphxqvujvh-30as.gvt1.com
203.121.59.142	PTR	cpng-r2-a142.time.net.my
203.121.59.142	A	r3.sn-uphxqvujvh-30as.c.pack.google.com
203.121.59.142	A	r3.sn-uphxqvujvh-30as.gvt1.com
203.121.59.143	PTR	cpng-r2-a143.time.net.my
203.121.59.143	A	r4.sn-uphxqvujvh-30as.googlevideo.com
203.121.59.180	PTR	cpng-r2-b180.time.net.my
203.121.59.201	PTR	cpng-r2-b201.time.net.my
203.121.59.203	PTR	cpng-r2-b203.time.net.my
203.121.59.208	PTR	cpng-r2-b208.time.net.my
203.121.59.209	PTR	cpng-r2-b209.time.net.my
203.121.59.210	PTR	cpng-r2-b210.time.net.my
203.121.59.217	PTR	cpng-r2-b217.time.net.my