Robtex

Up: 208.117.224.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 208.117.224.0/23
Down right: 208.117.226.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
208.117.224.4	PTR	cache.google.com
208.117.224.18	PTR	cache.google.com
208.117.224.20	PTR	cache.google.com
208.117.224.25	PTR	cache.google.com
208.117.224.32	PTR	cache.google.com
208.117.224.54	PTR	cache.google.com
208.117.224.80	PTR	cache.google.com
208.117.224.83	PTR	cache.google.com
208.117.224.88	PTR	cache.google.com
208.117.224.97	PTR	cache.google.com
208.117.224.98	PTR	cache.google.com
208.117.224.109	PTR	cache.google.com
208.117.224.123	PTR	cache.google.com
208.117.224.152	PTR	cache.google.com
208.117.224.162	PTR	cache.google.com
208.117.224.185	PTR	cache.google.com
208.117.224.210	PTR	cache.google.com
208.117.224.214	PTR	cache.google.com
208.117.224.228	PTR	cache.google.com
208.117.225.2	PTR	cache.google.com
208.117.225.7	PTR	cache.google.com
208.117.225.14	PTR	cache.google.com
208.117.225.20	PTR	cache.google.com
208.117.225.20	A	r1.sn-bvvbax-qxose.c.pack.google.com
208.117.225.20	A	r1.sn-bvvbax-qxose.googlevideo.com
208.117.225.22	PTR	cache.google.com
208.117.225.23	PTR	cache.google.com
208.117.225.24	PTR	cache.google.com
208.117.225.24	A	r5---sn-bvvbax-qxose.googlevideo.com
208.117.225.24	A	r5.sn-bvvbax-qxose.googlevideo.com
208.117.225.25	PTR	cache.google.com
208.117.225.25	A	r6---sn-bvvbax-qxose.googlevideo.com
208.117.225.27	PTR	cache.google.com
208.117.225.28	PTR	cache.google.com
208.117.225.28	A	r9.sn-bvvbax-qxose.c.pack.google.com
208.117.225.28	A	r9.sn-bvvbax-qxose.googlevideo.com
208.117.225.29	PTR	cache.google.com
208.117.225.29	A	r10---sn-bvvbax-qxose.googlevideo.com
208.117.225.30	PTR	cache.google.com
208.117.225.32	A	r13---sn-bvvbax-qxose.googlevideo.com
208.117.225.33	A	r14.sn-bvvbax-qxose.googlevideo.com
208.117.225.34	PTR	cache.google.com
208.117.225.34	A	r15---sn-bvvbax-qxose.googlevideo.com
208.117.225.35	PTR	cache.google.com
208.117.225.35	A	r16---sn-bvvbax-qxose.googlevideo.com
208.117.225.50	PTR	cache.google.com
208.117.225.70	PTR	cache.google.com
208.117.225.75	PTR	cache.google.com
208.117.225.100	PTR	cache.google.com
208.117.225.132	PTR	cache.google.com
208.117.225.153	PTR	cache.google.com
208.117.225.154	PTR	cache.google.com
208.117.225.157	PTR	cache.google.com
208.117.225.180	PTR	cache.google.com
208.117.225.220	PTR	cache.google.com
208.117.225.222	PTR	cache.google.com
208.117.225.223	PTR	cache.google.com
208.117.225.224	PTR	cache.google.com
208.117.227.2	PTR	cache.google.com
208.117.227.4	PTR	cache.google.com
208.117.227.10	PTR	cache.google.com
208.117.227.21	PTR	cache.google.com
208.117.227.40	PTR	cache.google.com
208.117.227.41	PTR	cache.google.com
208.117.227.53	PTR	cache.google.com
208.117.227.62	PTR	cache.google.com
208.117.227.77	A	r2---sn-bvvbax-qxos.googlevideo.com
208.117.227.86	PTR	cache.google.com
208.117.227.111	PTR	cache.google.com
208.117.227.114	PTR	cache.google.com
208.117.227.141	PTR	cache.google.com
208.117.227.146	PTR	cache.google.com
208.117.227.165	PTR	cache.google.com
208.117.227.173	PTR	cache.google.com
208.117.227.206	PTR	cache.google.com
208.117.227.208	PTR	cache.google.com
208.117.227.222	PTR	cache.google.com
208.117.227.223	PTR	cache.google.com
208.117.227.231	PTR	cache.google.com
208.117.227.232	PTR	cache.google.com
208.117.227.238	PTR	cache.google.com