Robtex

Up: 72.240.108.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 72.240.108.0/25
Down right: 72.240.108.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.240.108.12	A	r1---sn-cxj5caxntnuxh-uvae.gvt1.com
72.240.108.12	A	r1.sn-cxj5caxntnuxh-uvae.gvt1.com
72.240.108.12	A	r1.sn-cxj5caxntnuxh-uvae.googlevideo.com
72.240.108.13	A+PTR	cblmdm72-240-108-13.buckeyecom.net
72.240.108.13	A	r2---sn-cxj5caxntnuxh-uvae.googlevideo.com
72.240.108.13	A	r2---sn-cxj5caxntnuxh-uvae.gvt1.com
72.240.108.14	PTR	cblmdm72-240-108-14.buckeyecom.net
72.240.108.14	A	r3---sn-cxj5caxntnuxh-uvae.gvt1.com
72.240.108.14	A	r3---sn-cxj5caxntnuxh-uvae.googlevideo.com
72.240.108.29	A	cblmdm72-240-108-29.buckeyecom.net
72.240.108.34	A+PTR	cblmdm72-240-108-34.buckeyecom.net
72.240.108.44	PTR	cache.google.com
72.240.108.44	A	r1---sn-cxj5caxntnuxh-uvas.gvt1.com
72.240.108.44	A	r1---sn-cxj5caxntnuxh-uvas.googlevideo.com
72.240.108.45	PTR	cache.google.com
72.240.108.45	A	r2---sn-cxj5caxntnuxh-uvas.googlevideo.com
72.240.108.45	A	r2.sn-cxj5caxntnuxh-uvas.googlevideo.com
72.240.108.46	PTR	cache.google.com
72.240.108.46	A	r3---sn-cxj5caxntnuxh-uvas.googlevideo.com
72.240.108.46	A	r3.sn-cxj5caxntnuxh-uvas.googlevideo.com
72.240.108.47	PTR	cache.google.com
72.240.108.47	A	r4---sn-cxj5caxntnuxh-uvas.googlevideo.com
72.240.108.47	A	r4.sn-cxj5caxntnuxh-uvas.googlevideo.com
72.240.108.51	A	cblmdm72-240-108-51.buckeyecom.net
72.240.108.62	A	cblmdm72-240-108-62.buckeyecom.net
72.240.108.76	A+PTR	cblmdm72-240-108-76.buckeyecom.net
72.240.108.76	A	r1---sn-cxj5caxntnuxh-uval.googlevideo.com
72.240.108.76	A	r1---sn-cxj5caxntnuxh-uval.gvt1.com
72.240.108.77	PTR	cblmdm72-240-108-77.buckeyecom.net
72.240.108.77	A	r2.sn-cxj5caxntnuxh-uval.gvt1.com
72.240.108.77	A	r2---sn-cxj5caxntnuxh-uval.gvt1.com
72.240.108.78	A+PTR	cblmdm72-240-108-78.buckeyecom.net
72.240.108.78	A	r3---sn-cxj5caxntnuxh-uval.gvt1.com
72.240.108.78	A	r3---sn-cxj5caxntnuxh-uval.googlevideo.com