Robtex

Up: 64.15.122.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 64.15.123.0/25
Down right: 64.15.123.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.15.123.7	PTR	cache.google.com
64.15.123.12	PTR	cache.google.com
64.15.123.16	PTR	cache.google.com
64.15.123.16	A	r1.sn-bvvbax-2iae.c.doc-0-0-sj.sj.googleusercontent.com
64.15.123.16	A	r1.sn-bvvbax-2iae.gvt1.com
64.15.123.17	A	r2.sn-bvvbax-2iae.gvt1.com
64.15.123.17	A	r2.sn-bvvbax-2iae.c.2mdn.net
64.15.123.17	A	r2.sn-bvvbax-2iae.c.doc-0-0-sj.sj.googleusercontent.com
64.15.123.18	A	r3.sn-bvvbax-2iae.googlevideo.com
64.15.123.18	A	r3.sn-bvvbax-2iae.gvt1.com
64.15.123.18	A	r3.sn-bvvbax-2iae.c.2mdn.net
64.15.123.19	PTR	cache.google.com
64.15.123.19	A	r4.sn-bvvbax-2iae.c.2mdn.net
64.15.123.19	A	r4.sn-bvvbax-2iae.gvt1.com
64.15.123.20	PTR	cache.google.com
64.15.123.20	A	r5.sn-bvvbax-2iae.snap.gvt1.com
64.15.123.20	A	r5.sn-bvvbax-2iae.c.doc-0-0-sj.sj.googleusercontent.com
64.15.123.21	A	r6.sn-bvvbax-2iae.c.2mdn.net
64.15.123.21	A	r6.sn-bvvbax-2iae.googlevideo.com
64.15.123.21	A	r6.sn-bvvbax-2iae.gvt1.com
64.15.123.22	PTR	cache.google.com
64.15.123.22	A	r7.sn-bvvbax-2iae.c.2mdn.net
64.15.123.22	A	r7.sn-bvvbax-2iae.googlevideo.com
64.15.123.23	PTR	cache.google.com
64.15.123.23	A	r8.sn-bvvbax-2iae.c.2mdn.net
64.15.123.23	A	r8.sn-bvvbax-2iae.c.doc-0-0-sj.sj.googleusercontent.com
64.15.123.24	PTR	cache.google.com
64.15.123.24	A	r9.sn-bvvbax-2iae.gvt1.com
64.15.123.24	A	r9.sn-bvvbax-2iae.googlevideo.com
64.15.123.25	PTR	cache.google.com
64.15.123.25	A	r10.sn-bvvbax-2iae.c.doc-0-0-sj.sj.googleusercontent.com
64.15.123.25	A	r10.sn-bvvbax-2iae.googlevideo.com
64.15.123.26	PTR	cache.google.com
64.15.123.26	A	r11.sn-bvvbax-2iae.googlevideo.com
64.15.123.26	A	r11.sn-bvvbax-2iae.gvt1.com
64.15.123.27	A	r12.sn-bvvbax-2iae.c.doc-0-0-sj.sj.googleusercontent.com
64.15.123.27	A	r12.sn-bvvbax-2iae.c.2mdn.net
64.15.123.27	A	r12.sn-bvvbax-2iae.gvt1.com
64.15.123.57	PTR	cache.google.com
64.15.123.73	PTR	cache.google.com
64.15.123.76	PTR	cache.google.com
64.15.123.78	PTR	cache.google.com
64.15.123.81	PTR	cache.google.com
64.15.123.85	PTR	cache.google.com
64.15.123.101	PTR	cache.google.com
64.15.123.102	PTR	cache.google.com
64.15.123.111	PTR	cache.google.com
64.15.123.119	PTR	cache.google.com
64.15.123.122	PTR	cache.google.com
64.15.123.133	PTR	cache.google.com
64.15.123.136	PTR	cache.google.com
64.15.123.138	PTR	cache.google.com
64.15.123.139	PTR	cache.google.com
64.15.123.164	PTR	cache.google.com
64.15.123.172	PTR	cache.google.com
64.15.123.197	PTR	cache.google.com
64.15.123.200	PTR	cache.google.com
64.15.123.202	PTR	cache.google.com
64.15.123.225	PTR	cache.google.com
64.15.123.230	PTR	cache.google.com
64.15.123.232	PTR	cache.google.com
64.15.123.233	PTR	cache.google.com
64.15.123.241	PTR	cache.google.com
64.15.123.254	PTR	cache.google.com