Robtex

Up: 64.15.116.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 64.15.117.0/25
Down right: 64.15.117.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.15.117.5	PTR	cache.google.com
64.15.117.7	PTR	cache.google.com
64.15.117.11	PTR	cache.google.com
64.15.117.12	PTR	cache.google.com
64.15.117.12	A	r1---sn-oapm-guhe.googlevideo.com
64.15.117.12	A	r1---sn-oapm-guhe.gvt1.com
64.15.117.13	PTR	cache.google.com
64.15.117.13	A	r2.sn-oapm-guhe.c.youtube.com
64.15.117.13	A	r2.sn-oapm-guhe.gvt1.com
64.15.117.14	PTR	cache.google.com
64.15.117.14	A	r3---sn-oapm-guhe.googlevideo.com
64.15.117.14	A	r3.sn-oapm-guhe.gvt1.com
64.15.117.15	PTR	cache.google.com
64.15.117.15	A	r4---sn-oapm-guhe.gvt1.com
64.15.117.16	A	r5---sn-oapm-guhe.googlevideo.com
64.15.117.16	A	r5---sn-oapm-guhe.gvt1.com
64.15.117.17	PTR	cache.google.com
64.15.117.17	A	r6---sn-oapm-guhe.googlevideo.com
64.15.117.17	A	r6.sn-oapm-guhe.gvt1.com
64.15.117.18	PTR	cache.google.com
64.15.117.18	A	r7.sn-oapm-guhe.googlevideo.com
64.15.117.18	A	r7---sn-oapm-guhe.gvt1.com
64.15.117.19	PTR	cache.google.com
64.15.117.19	A	r8.sn-oapm-guhe.gvt1.com
64.15.117.19	A	r8---sn-oapm-guhe.googlevideo.com
64.15.117.22	PTR	cache.google.com
64.15.117.23	PTR	cache.google.com
64.15.117.27	PTR	cache.google.com
64.15.117.34	PTR	cache.google.com
64.15.117.35	PTR	cache.google.com
64.15.117.36	PTR	cache.google.com
64.15.117.38	PTR	cache.google.com
64.15.117.39	PTR	cache.google.com
64.15.117.42	PTR	cache.google.com
64.15.117.43	PTR	cache.google.com
64.15.117.44	PTR	cache.google.com
64.15.117.44	A	r1---sn-oapm-guhl.googlevideo.com
64.15.117.44	A	r1.sn-oapm-guhl.c.android.clients.google.com
64.15.117.45	PTR	cache.google.com
64.15.117.45	A	r2.sn-oapm-guhl.googlevideo.com
64.15.117.45	A	r2.sn-oapm-guhl.gvt1.com
64.15.117.46	PTR	cache.google.com
64.15.117.46	A	r3.sn-oapm-guhl.gvt1.com
64.15.117.46	A	r3.sn-oapm-guhl.googlevideo.com
64.15.117.47	PTR	cache.google.com
64.15.117.47	A	r4---sn-oapm-guhl.googlevideo.com
64.15.117.47	A	r4.sn-oapm-guhl.gvt1.com
64.15.117.48	PTR	cache.google.com
64.15.117.48	A	r5.sn-oapm-guhl.gvt1.com
64.15.117.48	A	r5.sn-oapm-guhl.googlevideo.com
64.15.117.49	PTR	cache.google.com
64.15.117.49	A	r6---sn-oapm-guhl.googlevideo.com
64.15.117.49	A	r6---sn-oapm-guhl.gvt1.com
64.15.117.50	PTR	cache.google.com
64.15.117.50	A	r7.sn-oapm-guhl.gvt1.com
64.15.117.50	A	r7---sn-oapm-guhl.gvt1.com
64.15.117.51	PTR	cache.google.com
64.15.117.51	A	r8---sn-oapm-guhl.googlevideo.com
64.15.117.51	A	r8---sn-oapm-guhl.gvt1.com
64.15.117.52	PTR	cache.google.com
64.15.117.59	PTR	cache.google.com
64.15.117.75	PTR	cache.google.com
64.15.117.76	PTR	cache.google.com
64.15.117.76	A	r1.sn-oapm-guhs.googlevideo.com
64.15.117.76	A	r1---sn-oapm-guhs.gvt1.com
64.15.117.77	PTR	cache.google.com
64.15.117.77	A	r2.sn-oapm-guhs.gvt1.com
64.15.117.77	A	r2---sn-oapm-guhs.gvt1.com
64.15.117.78	PTR	cache.google.com
64.15.117.78	A	r3---sn-oapm-guhs.gvt1.com
64.15.117.78	A	r3.sn-oapm-guhs.googlevideo.com
64.15.117.79	PTR	cache.google.com
64.15.117.79	A	r4.sn-oapm-guhs.c.android.clients.google.com
64.15.117.79	A	r4.sn-oapm-guhs.c.youtube.com
64.15.117.80	PTR	cache.google.com
64.15.117.80	A	r5---sn-oapm-guhs.googlevideo.com
64.15.117.80	A	r5.sn-oapm-guhs.gvt1.com
64.15.117.81	PTR	cache.google.com
64.15.117.81	A	r6---sn-oapm-guhs.googlevideo.com
64.15.117.81	A	r6---sn-oapm-guhs.gvt1.com
64.15.117.82	PTR	cache.google.com
64.15.117.82	A	r7---sn-oapm-guhs.googlevideo.com
64.15.117.82	A	r7.sn-oapm-guhs.gvt1.com
64.15.117.83	PTR	cache.google.com
64.15.117.83	A	r8.sn-oapm-guhs.gvt1.com
64.15.117.83	A	r8.sn-oapm-guhs.c.android.clients.google.com
64.15.117.84	PTR	cache.google.com
64.15.117.85	PTR	cache.google.com
64.15.117.90	PTR	cache.google.com
64.15.117.107	PTR	cache.google.com
64.15.117.108	PTR	cache.google.com
64.15.117.108	A	r1---sn-oapm-guhz.gvt1.com
64.15.117.108	A	r1---sn-oapm-guhz.googlevideo.com
64.15.117.109	PTR	cache.google.com
64.15.117.109	A	r2---sn-oapm-guhz.googlevideo.com
64.15.117.109	A	r2.sn-oapm-guhz.googlevideo.com
64.15.117.110	PTR	cache.google.com
64.15.117.110	A	r3---sn-oapm-guhz.googlevideo.com
64.15.117.110	A	r3.sn-oapm-guhz.gvt1.com
64.15.117.111	PTR	cache.google.com
64.15.117.111	A	r4.sn-oapm-guhz.gvt1.com
64.15.117.112	PTR	cache.google.com
64.15.117.112	A	r5---sn-oapm-guhz.gvt1.com
64.15.117.112	A	r5---sn-oapm-guhz.googlevideo.com
64.15.117.113	PTR	cache.google.com
64.15.117.113	A	r6---sn-oapm-guhz.googlevideo.com
64.15.117.113	A	r6.sn-oapm-guhz.gvt1.com
64.15.117.114	PTR	cache.google.com
64.15.117.114	A	r7---sn-oapm-guhz.googlevideo.com
64.15.117.114	A	r7.sn-oapm-guhz.googlevideo.com
64.15.117.115	PTR	cache.google.com
64.15.117.115	A	r8---sn-oapm-guhz.gvt1.com
64.15.117.115	A	r8---sn-oapm-guhz.googlevideo.com
64.15.117.118	PTR	cache.google.com
64.15.117.123	PTR	cache.google.com
64.15.117.145	PTR	cache.google.com
64.15.117.158	PTR	cache.google.com
64.15.117.162	PTR	cache.google.com
64.15.117.167	PTR	cache.google.com
64.15.117.168	PTR	cache.google.com
64.15.117.169	PTR	cache.google.com
64.15.117.176	PTR	cache.google.com
64.15.117.178	PTR	cache.google.com
64.15.117.189	PTR	cache.google.com
64.15.117.199	PTR	cache.google.com
64.15.117.208	PTR	cache.google.com
64.15.117.209	PTR	cache.google.com
64.15.117.213	PTR	cache.google.com
64.15.117.216	PTR	cache.google.com
64.15.117.217	PTR	cache.google.com