Robtex

Up: 172.56.146.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 172.56.146.0/25
Down right: 172.56.146.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
172.56.146.12	A	r1.sn-uhvcpax0n5-x5ue.googlevideo.com
172.56.146.12	A	r1.sn-uhvcpax0n5-x5ue.gvt1.com
172.56.146.13	A	r2.sn-uhvcpax0n5-x5ue.googlevideo.com
172.56.146.14	A	r3.sn-uhvcpax0n5-x5ue.a1.googlevideo.com
172.56.146.14	A	r3.sn-uhvcpax0n5-x5ue.googlevideo.com
172.56.146.14	A	r3---sn-uhvcpax0n5-x5ue.googlevideo.com
172.56.146.15	A	r4.sn-uhvcpax0n5-x5ue.googlevideo.com
172.56.146.15	A	r4.sn-uhvcpax0n5-x5ue.a1.googlevideo.com
172.56.146.15	A	r4.sn-uhvcpax0n5-x5ue.xn--ngstr-lra8j.com
172.56.146.16	A	r5.sn-uhvcpax0n5-x5ue.xn--ngstr-lra8j.com
172.56.146.16	A	r5.sn-uhvcpax0n5-x5ue.googlevideo.com
172.56.146.16	A	r5---sn-uhvcpax0n5-x5ue.googlevideo.com
172.56.146.17	A	r6---sn-uhvcpax0n5-x5ue.googlevideo.com
172.56.146.17	A	r6.sn-uhvcpax0n5-x5ue.googlevideo.com