Robtex

Up: 27.71.240.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 27.71.244.0/23
Down right: 27.71.246.0/23

IP	Type	Hostname
27.71.244.76	PTR	localhost
27.71.244.76	A	r1.sn-8pxuuxa-8j5e7.googlevideo.com
27.71.244.76	A	r1.sn-8pxuuxa-8j5e7.gvt1.com
27.71.244.77	PTR	localhost
27.71.244.77	A	r2.sn-8pxuuxa-8j5e7.googlevideo.com
27.71.244.140	PTR	localhost
27.71.244.140	A	r1.sn-8pxuuxa-8j5ee.googlevideo.com
27.71.244.141	PTR	localhost
27.71.244.141	A	r2.sn-8pxuuxa-8j5ee.googlevideo.com
27.71.244.142	PTR	localhost
27.71.244.142	A	r3.sn-8pxuuxa-8j5ee.googlevideo.com
27.71.244.143	PTR	localhost
27.71.244.143	A	r4.sn-8pxuuxa-8j5ee.googlevideo.com
27.71.244.204	PTR	localhost
27.71.244.204	A	r1.sn-8pxuuxa-jmgd.googlevideo.com
27.71.244.240	PTR	localhost
27.71.244.240	A	hoaphuongfc.com
27.71.245.12	PTR	localhost
27.71.245.12	A	r1.sn-8pxuuxa-q5qel.googlevideo.com
27.71.245.14	PTR	localhost
27.71.245.14	A	r3.sn-8pxuuxa-q5qel.googlevideo.com
27.71.245.15	PTR	localhost
27.71.245.15	A	r4.sn-8pxuuxa-q5qel.googlevideo.com
27.71.245.16	PTR	localhost
27.71.245.16	A	r5.sn-8pxuuxa-q5qel.googlevideo.com
27.71.245.17	PTR	localhost
27.71.245.17	A	r6.sn-8pxuuxa-q5qel.googlevideo.com
27.71.245.76	PTR	localhost
27.71.245.76	A	r1.sn-8pxuuxa-i5oz6.googlevideo.com
27.71.245.77	PTR	localhost
27.71.245.77	A	r2.sn-8pxuuxa-i5oz6.googlevideo.com
27.71.245.78	PTR	localhost
27.71.245.78	A	r3.sn-8pxuuxa-i5oz6.googlevideo.com
27.71.245.78	A	r3.sn-8pxuuxa-i5oz6.gvt1.com
27.71.245.79	PTR	localhost
27.71.245.204	PTR	localhost
27.71.245.204	A	r1.sn-8pxuuxa-i5ozd.googlevideo.com
27.71.245.205	PTR	localhost
27.71.245.205	A	r2.sn-8pxuuxa-i5ozd.googlevideo.com
27.71.245.205	A	r2.sn-8pxuuxa-i5ozd.gvt1.com
27.71.246.76	PTR	localhost
27.71.246.76	A	r1.sn-8pxuuxa-2m0e7.googlevideo.com
27.71.246.76	A	r1.sn-8pxuuxa-2m0e7.gvt1.com
27.71.246.77	PTR	localhost
27.71.246.77	A	r2.sn-8pxuuxa-2m0e7.gvt1.com
27.71.246.140	PTR	localhost
27.71.246.140	A	r1.sn-8pxuuxa-nbozd.googlevideo.com
27.71.246.140	A	r1.sn-8pxuuxa-nbozd.gvt1.com
27.71.246.141	PTR	localhost
27.71.246.141	A	r2.sn-8pxuuxa-nbozd.googlevideo.com
27.71.246.141	A	r2.sn-8pxuuxa-nbozd.gvt1.com
27.71.246.142	PTR	localhost
27.71.246.143	PTR	localhost
27.71.246.204	PTR	localhost
27.71.246.204	A	r1.sn-8pxuuxa-nbozk.googlevideo.com
27.71.246.205	A	r2.sn-8pxuuxa-nbozk.googlevideo.com
27.71.247.12	PTR	localhost
27.71.247.12	A	r1.sn-8pxuuxa-8j5el.googlevideo.com
27.71.247.13	PTR	localhost
27.71.247.13	A	r2.sn-8pxuuxa-8j5el.googlevideo.com
27.71.247.76	PTR	localhost
27.71.247.76	A	r1.sn-8pxuuxa-8j5es.gvt1.com
27.71.247.78	PTR	localhost
27.71.247.78	A	r3.sn-8pxuuxa-8j5es.gvt1.com
27.71.247.141	PTR	localhost
27.71.247.141	A	r2.sn-8pxuuxa-8jas.googlevideo.com
27.71.247.204	PTR	localhost
27.71.247.204	A	r1.sn-8pxuuxa-8pp6.gvt1.com
27.71.247.204	A	r1.sn-8pxuuxa-8pp6.googlevideo.com
27.71.247.205	PTR	localhost
27.71.247.205	A	r2.sn-8pxuuxa-8pp6.googlevideo.com
27.71.247.206	PTR	localhost
27.71.247.206	A	r3.sn-8pxuuxa-8pp6.gvt1.com
27.71.247.207	PTR	localhost