Robtex

Up: 192.122.176.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 192.122.184.0/22
Down right: 192.122.188.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.122.184.65	PTR	vlan305.sfdata2.mich.net
192.122.184.71	PTR	akamai-71.merit.edu
192.122.184.72	PTR	akamai-72.merit.edu
192.122.184.74	PTR	akamai-74.merit.edu
192.122.184.89	PTR	akamai-89.merit.edu
192.122.184.90	PTR	akamai-90.merit.edu
192.122.184.96	PTR	akamai-96.merit.edu
192.122.184.98	PTR	akamai-98.merit.edu
192.122.184.101	PTR	akamai-101.merit.edu
192.122.184.105	PTR	akamai-105.merit.edu
192.122.184.107	PTR	akamai-107.merit.edu
192.122.184.112	PTR	akamai-112.merit.edu
192.122.184.114	PTR	akamai-114.merit.edu
192.122.184.122	PTR	akamai-122.merit.edu
192.122.184.123	PTR	akamai-123.merit.edu
192.122.184.136	A+PTR	akamai-136.merit.edu
192.122.184.137	A+PTR	akamai-137.merit.edu
192.122.184.145	A+PTR	akamai-145.merit.edu
192.122.184.146	PTR	akamai-146.merit.edu
192.122.185.4	PTR	cache.google.com
192.122.185.5	PTR	cache.google.com
192.122.185.12	A	r1.sn-hxgpu-qufe.gvt1.com
192.122.185.12	A	r1---sn-hxgpu-qufe.gvt1.com
192.122.185.12	A	r1.sn-hxgpu-qufe.googlevideo.com
192.122.185.16	PTR	cache.google.com
192.122.185.18	PTR	cache.google.com
192.122.185.27	PTR	cache.google.com
192.122.185.68	PTR	cache.google.com
192.122.185.73	PTR	cache.google.com
192.122.185.74	PTR	cache.google.com
192.122.185.76	A	r1---sn-hxgpu-a5oe.googlevideo.com
192.122.185.77	A	r2---sn-hxgpu-a5oe.gvt1.com
192.122.185.77	A	r2.sn-hxgpu-a5oe.gvt1.com
192.122.185.77	A	r2---sn-hxgpu-a5oe.googlevideo.com
192.122.185.81	PTR	cache.google.com
192.122.185.91	PTR	cache.google.com
192.122.185.123	PTR	cache.google.com
192.122.185.140	PTR	cache.google.com
192.122.185.140	A	r1---sn-hxgpu-qufl.gvt1.com
192.122.185.140	A	r1.sn-hxgpu-qufl.gvt1.com
192.122.185.141	PTR	cache.google.com
192.122.185.141	A	r2.sn-hxgpu-qufl.googlevideo.com
192.122.185.142	PTR	cache.google.com
192.122.186.1	PTR	lo0x0.nl-chi3.mich.net
192.122.186.129	A+PTR	xe-2-0-0x137.aa3.mich.net
192.122.186.130	PTR	c001.dtw001.merit.isp.nflxvideo.net
192.122.186.130	A	ipv4-c002-dtw001-merit-isp.1.oca.nflxvideo.net
192.122.186.130	A	ipv4_1.lagg0.c001.dtw001.merit.isp.nflxvideo.net
192.122.186.138	A	ipv4-c002-lan001-merit-isp.1.oca.nflxvideo.net