Robtex

Up: 208.110.160.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 208.110.168.0/22
Down right: 208.110.172.0/22

IP	Type	Hostname
208.110.168.0	PTR	unused-ip.zayo.com
208.110.168.25	PTR	unused-ip.zayo.com
208.110.168.33	PTR	unused-ip.zayo.com
208.110.168.48	PTR	unused-ip.zayo.com
208.110.168.51	PTR	unused-ip.zayo.com
208.110.168.64	A	csr1.rvs1.marquisnet.com
208.110.168.65	PTR	bcr1.rvs1.marquinet.com
208.110.168.72	PTR	unused-ip.zayo.com
208.110.168.73	PTR	unused-ip.zayo.com
208.110.168.74	PTR	unused-ip.zayo.com
208.110.168.80	PTR	unused-ip.zayo.com
208.110.168.90	PTR	unused-ip.zayo.com
208.110.168.91	PTR	unused-ip.zayo.com
208.110.168.98	PTR	unused-ip.zayo.com
208.110.168.104	PTR	unused-ip.zayo.com
208.110.168.107	PTR	unused-ip.zayo.com
208.110.168.123	PTR	unused-ip.zayo.com
208.110.168.129	PTR	unused-ip.zayo.com
208.110.168.144	PTR	unused-ip.zayo.com
208.110.168.146	PTR	unused-ip.zayo.com
208.110.168.153	PTR	unused-ip.zayo.com
208.110.168.155	PTR	unused-ip.zayo.com
208.110.168.170	PTR	unused-ip.zayo.com
208.110.168.184	PTR	unused-ip.zayo.com
208.110.168.185	PTR	unused-ip.zayo.com
208.110.168.194	PTR	unused-ip.zayo.com
208.110.168.200	PTR	unused-ip.zayo.com
208.110.168.210	PTR	tserve1.rvs1.marquisnet.com
208.110.168.211	PTR	unused-ip.zayo.com
208.110.168.216	PTR	unused-ip.zayo.com
208.110.168.225	PTR	unused-ip.zayo.com
208.110.168.227	PTR	unused-ip.zayo.com
208.110.168.232	PTR	unused-ip.zayo.com
208.110.168.243	PTR	unused-ip.zayo.com
208.110.168.250	PTR	unused-ip.zayo.com
208.110.168.251	PTR	unused-ip.zayo.com
208.110.169.2	PTR	default-00011183.zayo.com
208.110.169.8	PTR	default-00011183.zayo.com
208.110.169.17	PTR	default-00011183.zayo.com
208.110.169.18	PTR	default-00011183.zayo.com
208.110.169.19	PTR	default-00011183.zayo.com
208.110.169.24	PTR	default-00011183.zayo.com
208.110.169.27	PTR	default-00011183.zayo.com
208.110.169.41	PTR	default-00011183.zayo.com
208.110.169.56	PTR	default-00011183.zayo.com
208.110.169.65	PTR	default-00011183.zayo.com
208.110.169.66	PTR	default-00011183.zayo.com
208.110.169.74	PTR	default-00011183.zayo.com
208.110.169.82	PTR	default-00011183.zayo.com
208.110.169.89	PTR	default-00011183.zayo.com
208.110.169.90	PTR	default-00011183.zayo.com
208.110.169.104	PTR	default-00011183.zayo.com
208.110.169.137	PTR	default-00011183.marquisnet.com
208.110.169.154	PTR	default-00011183.zayo.com
208.110.169.162	PTR	default-00011183.zayo.com
208.110.169.163	PTR	default-00011183.zayo.com
208.110.169.168	PTR	default-00011183.zayo.com
208.110.169.171	PTR	default-00011183.zayo.com
208.110.169.184	PTR	default-00011183.zayo.com
208.110.169.187	PTR	default-00011183.zayo.com
208.110.169.192	PTR	default-00011183.zayo.com
208.110.169.193	PTR	default-00011183.zayo.com
208.110.169.195	PTR	default-00011183.zayo.com
208.110.169.202	PTR	default-00011183.zayo.com
208.110.169.216	PTR	default-00011183.zayo.com
208.110.169.225	PTR	default-00011183.zayo.com
208.110.169.235	PTR	default-00011183.zayo.com
208.110.169.241	PTR	default-00011183.zayo.com
208.110.169.242	PTR	default-00011183.zayo.com
208.110.169.248	PTR	default-00011183.zayo.com
208.110.169.249	PTR	default-00011183.zayo.com
208.110.170.11	A	misciences.com
208.110.170.18	A	thepdfblog.com
208.110.170.20	A	pdftoexcel.es
208.110.170.20	A	pdftoword.es
208.110.170.247	A	khtsnews.com
208.110.171.47	A	mail.hcpnv.com
208.110.171.99	A	mail1.visioncapital.us
208.110.171.99	A	alliancesurg.net
208.110.171.216	PTR	default-00011184.marquisnet.com
208.110.172.5	PTR	default-00011186.marquisnet.com
208.110.172.5	A	smtp.westernthrift.net
208.110.175.255	PTR	broadcast-00011186.marquisnet.com