Robtex

Up: 64.15.120.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 64.15.124.0/23
Down right: 64.15.126.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.15.124.13	PTR	cache.google.com
64.15.124.14	PTR	cache.google.com
64.15.124.16	A	o-o.preferred.google-bru1.v13.lscache1.c.youtube.com
64.15.124.34	PTR	cache.google.com
64.15.124.56	PTR	cache.google.com
64.15.124.69	PTR	cache.google.com
64.15.124.71	PTR	cache.google.com
64.15.124.76	A	r1.sn-uxaxoxu-cg0s.gvt1.com
64.15.124.76	A	r1---sn-uxaxoxu-cg0s.googlevideo.com
64.15.124.77	PTR	cache.google.com
64.15.124.77	A	r2---sn-uxaxoxu-cg0s.googlevideo.com
64.15.124.78	PTR	cache.google.com
64.15.124.79	PTR	cache.google.com
64.15.124.79	A	r4.sn-uxaxoxu-cg0s.gvt1.com
64.15.124.80	A	r5---sn-uxaxoxu-cg0s.googlevideo.com
64.15.124.81	PTR	cache.google.com
64.15.124.82	PTR	cache.google.com
64.15.124.82	A	r7.sn-uxaxoxu-cg0s.googlevideo.com
64.15.124.82	A	r7---sn-uxaxoxu-cg0s.googlevideo.com
64.15.124.83	PTR	cache.google.com
64.15.124.83	A	r8.sn-uxaxoxu-cg0s.gvt1.com
64.15.124.85	PTR	cache.google.com
64.15.124.91	PTR	cache.google.com
64.15.124.108	PTR	cache.google.com
64.15.124.108	A	r1---sn-uxaxoxu-cg0z.googlevideo.com
64.15.124.108	A	r1---sn-uxaxoxu-cg0z.gvt1.com
64.15.124.109	A	r2.sn-uxaxoxu-cg0z.googlevideo.com
64.15.124.111	PTR	cache.google.com
64.15.124.112	PTR	cache.google.com
64.15.124.112	A	r5---sn-uxaxoxu-cg0z.gvt1.com
64.15.124.113	A	r6.sn-uxaxoxu-cg0z.googlevideo.com
64.15.124.113	A	r6.sn-uxaxoxu-cg0z.gvt1.com
64.15.124.114	A	r7---sn-uxaxoxu-cg0z.gvt1.com
64.15.124.115	PTR	cache.google.com
64.15.124.117	PTR	cache.google.com
64.15.124.119	PTR	cache.google.com
64.15.124.119	A	www.xcams.de
64.15.124.119	A	xcams.de
64.15.124.123	PTR	cache.google.com
64.15.124.140	PTR	cache.google.com
64.15.124.140	A	r1---sn-uxaxoxu-cg06.googlevideo.com
64.15.124.140	A	r1.sn-uxaxoxu-cg06.googlevideo.com
64.15.124.141	PTR	cache.google.com
64.15.124.141	A	r2.sn-uxaxoxu-cg06.googlevideo.com
64.15.124.142	PTR	cache.google.com
64.15.124.144	PTR	cache.google.com
64.15.124.144	A	r5.sn-uxaxoxu-cg06.gvt1.com
64.15.124.144	A	r5---sn-uxaxoxu-cg06.gvt1.com
64.15.124.145	PTR	cache.google.com
64.15.124.146	PTR	cache.google.com
64.15.124.147	PTR	cache.google.com
64.15.124.149	PTR	cache.google.com
64.15.124.152	PTR	cache.google.com
64.15.124.167	PTR	cache.google.com
64.15.124.172	PTR	cache.google.com
64.15.124.172	A	r1---sn-uxaxoxu-cg0d.googlevideo.com
64.15.124.172	A	r1.sn-uxaxoxu-cg0d.googlevideo.com
64.15.124.173	PTR	cache.google.com
64.15.124.173	A	r2.sn-uxaxoxu-cg0d.googlevideo.com
64.15.124.173	A	r2---sn-uxaxoxu-cg0d.googlevideo.com
64.15.124.175	PTR	cache.google.com
64.15.124.176	PTR	cache.google.com
64.15.124.176	A	r5.sn-uxaxoxu-cg0d.googlevideo.com
64.15.124.176	A	r5.sn-uxaxoxu-cg0d.gvt1.com
64.15.124.177	PTR	cache.google.com
64.15.124.177	A	r6---sn-uxaxoxu-cg0d.googlevideo.com
64.15.124.186	PTR	cache.google.com
64.15.124.200	PTR	cache.google.com
64.15.124.204	PTR	cache.google.com
64.15.124.204	A	r1---sn-uxaxoxu-5oge.googlevideo.com
64.15.124.204	A	r1.sn-uxaxoxu-5oge.googlevideo.com
64.15.124.205	PTR	cache.google.com
64.15.124.205	A	r2.sn-uxaxoxu-5oge.googlevideo.com
64.15.124.206	PTR	cache.google.com
64.15.124.207	PTR	cache.google.com
64.15.124.208	PTR	cache.google.com
64.15.124.208	A	r5---sn-uxaxoxu-5oge.gvt1.com
64.15.124.208	A	r5---sn-uxaxoxu-5oge.googlevideo.com
64.15.124.209	PTR	cache.google.com
64.15.124.209	A	r6---sn-uxaxoxu-5oge.gvt1.com
64.15.124.209	A	r6.sn-uxaxoxu-5oge.googlevideo.com
64.15.124.210	PTR	cache.google.com
64.15.124.211	PTR	cache.google.com
64.15.124.212	PTR	cache.google.com
64.15.124.214	PTR	cache.google.com
64.15.124.216	PTR	cache.google.com
64.15.124.217	PTR	cache.google.com
64.15.124.230	PTR	cache.google.com
64.15.124.234	PTR	cache.google.com
64.15.124.236	PTR	cache.google.com
64.15.124.236	A	r1---sn-uxaxoxu-5ogl.gvt1.com
64.15.124.236	A	r1---sn-uxaxoxu-5ogl.googlevideo.com
64.15.124.237	PTR	cache.google.com
64.15.124.237	A	r2.sn-uxaxoxu-5ogl.googlevideo.com
64.15.124.237	A	r2---sn-uxaxoxu-5ogl.googlevideo.com
64.15.124.238	PTR	cache.google.com
64.15.124.239	PTR	cache.google.com
64.15.124.240	PTR	cache.google.com
64.15.124.240	A	r5---sn-uxaxoxu-5ogl.gvt1.com
64.15.124.240	A	r5---sn-uxaxoxu-5ogl.googlevideo.com
64.15.124.241	PTR	cache.google.com
64.15.124.241	A	r6---sn-uxaxoxu-5ogl.gvt1.com
64.15.124.242	PTR	cache.google.com
64.15.124.243	PTR	cache.google.com
64.15.124.246	PTR	cache.google.com
64.15.124.247	PTR	cache.google.com
64.15.124.249	PTR	cache.google.com
64.15.124.251	PTR	cache.google.com
64.15.124.252	PTR	cache.google.com
64.15.125.12	PTR	cache.google.com
64.15.125.23	PTR	cache.google.com
64.15.125.40	PTR	cache.google.com
64.15.125.51	PTR	cache.google.com
64.15.125.90	PTR	cache.google.com
64.15.125.111	PTR	cache.google.com
64.15.125.119	PTR	cache.google.com
64.15.125.188	PTR	cache.google.com
64.15.125.245	PTR	cache.google.com
64.15.126.12	PTR	cache.google.com
64.15.126.12	A	r1.sn-xqbxa5c-cvns.c.doc-0-0-sj.sj.googleusercontent.com
64.15.126.12	A	r1.sn-xqbxa5c-cvns.gvt1.com
64.15.126.13	PTR	cache.google.com
64.15.126.15	PTR	cache.google.com
64.15.126.16	PTR	cache.google.com
64.15.126.19	PTR	cache.google.com
64.15.126.21	PTR	cache.google.com
64.15.126.22	PTR	cache.google.com
64.15.126.24	PTR	cache.google.com
64.15.126.25	PTR	cache.google.com
64.15.126.27	PTR	cache.google.com
64.15.126.29	PTR	cache.google.com
64.15.126.30	PTR	cache.google.com
64.15.126.32	PTR	cache.google.com
64.15.126.36	PTR	cache.google.com
64.15.126.37	PTR	cache.google.com
64.15.126.38	PTR	cache.google.com
64.15.126.39	PTR	cache.google.com
64.15.126.40	PTR	cache.google.com
64.15.126.41	PTR	cache.google.com
64.15.126.41	A	r2.sn-xqbxa5c-cvnz.c.2mdn.net
64.15.126.44	PTR	cache.google.com
64.15.126.44	A	r1.sn-xqbxa5c-cvnz.gvt1.com
64.15.126.44	A	r1.sn-xqbxa5c-cvnz.googlevideo.com
64.15.126.45	PTR	cache.google.com
64.15.126.45	A	r2.sn-xqbxa5c-cvnz.c.2mdn.net
64.15.126.48	PTR	cache.google.com
64.15.126.49	PTR	cache.google.com
64.15.126.56	PTR	cache.google.com
64.15.126.56	A	r1.sn-xqbxa5c-cvnee.gvt1.com
64.15.126.57	PTR	cache.google.com
64.15.126.57	A	r2.sn-xqbxa5c-cvnee.gvt1.com
64.15.126.59	PTR	cache.google.com
64.15.126.70	PTR	cache.google.com
64.15.126.74	PTR	cache.google.com
64.15.126.76	A	r1.sn-xqbxa5c-cvn6.c.2mdn.net
64.15.126.76	A	r1.sn-xqbxa5c-cvn6.googlevideo.com
64.15.126.77	PTR	cache.google.com
64.15.126.77	A	r2.sn-xqbxa5c-cvn6.googlevideo.com
64.15.126.77	A	r2.sn-xqbxa5c-cvn6.gvt1.com
64.15.126.80	PTR	cache.google.com
64.15.126.80	A	r5---sn-o5hxm-4jvl.googlevideo.com
64.15.126.84	PTR	cache.google.com
64.15.126.89	PTR	cache.google.com
64.15.126.94	PTR	cache.google.com
64.15.126.98	PTR	cache.google.com
64.15.126.100	PTR	cache.google.com
64.15.126.103	PTR	cache.google.com
64.15.126.104	PTR	cache.google.com
64.15.126.108	PTR	cache.google.com
64.15.126.108	A	r1.sn-xqbxa5c-cvnd.gvt1.com
64.15.126.108	A	r1.sn-xqbxa5c-cvnd.googlevideo.com
64.15.126.109	PTR	cache.google.com
64.15.126.110	PTR	cache.google.com
64.15.126.113	PTR	cache.google.com
64.15.126.114	PTR	cache.google.com
64.15.126.119	PTR	cache.google.com
64.15.126.123	PTR	cache.google.com
64.15.126.132	PTR	cache.google.com
64.15.126.133	PTR	cache.google.com
64.15.126.140	PTR	cache.google.com
64.15.126.140	A	r1.sn-xqbxa5c-cvnk.googlevideo.com
64.15.126.140	A	r1.sn-xqbxa5c-cvnk.gvt1.com
64.15.126.141	A	r2.sn-xqbxa5c-cvnk.gvt1.com
64.15.126.141	A	r2.sn-xqbxa5c-cvnk.googlevideo.com
64.15.126.145	PTR	cache.google.com
64.15.126.152	PTR	cache.google.com
64.15.126.166	PTR	cache.google.com
64.15.126.169	PTR	cache.google.com
64.15.126.178	PTR	cache.google.com
64.15.126.179	PTR	cache.google.com
64.15.126.183	PTR	cache.google.com
64.15.126.192	PTR	cache.google.com
64.15.126.196	PTR	cache.google.com
64.15.126.199	PTR	cache.google.com
64.15.126.209	PTR	cache.google.com
64.15.126.217	PTR	cache.google.com
64.15.126.219	PTR	cache.google.com
64.15.126.226	PTR	cache.google.com
64.15.126.233	PTR	cache.google.com
64.15.126.253	PTR	cache.google.com
64.15.127.23	PTR	cache.google.com
64.15.127.33	PTR	cache.google.com