Robtex

Up: 74.91.8.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 74.91.8.0/25
Down right: 74.91.8.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
74.91.8.2	PTR	ge-0-1.mbr1.nj.fiftyone.com
74.91.8.5	PTR	sw2.nj.fiftyone.com
74.91.8.6	PTR	ip-4a5b0806.atlanticmetro.net
74.91.8.8	PTR	ip-4a5b0808.atlanticmetro.net
74.91.8.9	A	origin1-services.fiftyone.com
74.91.8.10	PTR	ip-4a5b080a.atlanticmetro.net
74.91.8.10	A	clients.e4x.com
74.91.8.13	PTR	ip-4a5b080d.atlanticmetro.net
74.91.8.13	A	services.fiftyone.com
74.91.8.14	A	mail.fiftyone.com
74.91.8.15	PTR	ip-4a5b080f.atlanticmetro.net
74.91.8.16	PTR	ip-4a5b0810.atlanticmetro.net
74.91.8.18	PTR	ip-4a5b0812.atlanticmetro.net
74.91.8.19	PTR	ip-4a5b0813.atlanticmetro.net
74.91.8.22	PTR	ip-4a5b0816.atlanticmetro.net
74.91.8.23	PTR	ip-4a5b0817.atlanticmetro.net
74.91.8.24	PTR	ip-4a5b0818.atlanticmetro.net
74.91.8.26	PTR	ip-4a5b081a.atlanticmetro.net
74.91.8.26	A	services.borderfree.com
74.91.8.29	PTR	ip-4a5b081d.atlanticmetro.net
74.91.8.31	PTR	ip-4a5b081f.atlanticmetro.net
74.91.8.35	PTR	ip-4a5b0823.atlanticmetro.net
74.91.8.36	PTR	hostingsource.dmarc2.ewr1.atlanticmetro.net
74.91.8.38	PTR	ip-4a5b0826.atlanticmetro.net
74.91.8.39	PTR	ip-4a5b0827.atlanticmetro.net
74.91.8.42	PTR	server13370.brentonway.com
74.91.8.44	PTR	ip-4a5b082c.atlanticmetro.net
74.91.8.45	PTR	ip-4a5b082d.atlanticmetro.net
74.91.8.48	PTR	ip-4a5b0830.atlanticmetro.net
74.91.8.51	PTR	ip-4a5b0833.atlanticmetro.net
74.91.8.53	PTR	ip-4a5b0835.atlanticmetro.net
74.91.8.59	PTR	ip-4a5b083b.atlanticmetro.net
74.91.8.60	PTR	ip-4a5b083c.atlanticmetro.net
74.91.8.62	PTR	ip-4a5b083e.atlanticmetro.net
74.91.8.63	PTR	ip-4a5b083f.atlanticmetro.net
74.91.8.65	PTR	ip-4a5b0841.atlanticmetro.net
74.91.8.76	PTR	ip-4a5b084c.atlanticmetro.net
74.91.8.79	PTR	ip-4a5b084f.atlanticmetro.net
74.91.8.81	PTR	ip-4a5b0851.atlanticmetro.net
74.91.8.84	PTR	ip-4a5b0854.atlanticmetro.net
74.91.8.86	PTR	ip-4a5b0856.atlanticmetro.net
74.91.8.89	PTR	ip-4a5b0859.atlanticmetro.net
74.91.8.92	PTR	ip-4a5b085c.atlanticmetro.net
74.91.8.97	PTR	ip-4a5b0861.atlanticmetro.net
74.91.8.120	PTR	ip-4a5b0878.atlanticmetro.net
74.91.8.124	PTR	ip-4a5b087c.atlanticmetro.net
74.91.8.127	PTR	ip-4a5b087f.atlanticmetro.net
74.91.8.131	PTR	ip-4a5b0883.atlanticmetro.net
74.91.8.145	PTR	ip-4a5b0891.atlanticmetro.net
74.91.8.145	A	servidor.kservidor.com.br
74.91.8.145	A	ns1.kservidor.com.br
74.91.8.148	PTR	ip-4a5b0894.atlanticmetro.net
74.91.8.150	PTR	ip-4a5b0896.atlanticmetro.net
74.91.8.150	A	ns2.kservidor.com.br
74.91.8.163	PTR	ip-4a5b08a3.atlanticmetro.net
74.91.8.170	PTR	ip-4a5b08aa.atlanticmetro.net
74.91.8.172	PTR	ip-4a5b08ac.atlanticmetro.net
74.91.8.201	PTR	servidor.sempihost21.com.br
74.91.8.201	A	sempihost14.com.br
74.91.8.201	A	prosperarecontabil.com.br
74.91.8.205	PTR	ip-4a5b08cd.atlanticmetro.net
74.91.8.205	A	globalnewsink.com
74.91.8.214	PTR	ip-4a5b08d6.atlanticmetro.net
74.91.8.214	A	stat.world
74.91.8.217	A	westchestercountyhomeexpert.com
74.91.8.217	A	buysouthwestlahomes.com
74.91.8.217	A	6ixrealproperties.com
74.91.8.224	PTR	ip-4a5b08e0.atlanticmetro.net
74.91.8.224	A	myace.azurevms.net
74.91.8.227	PTR	ip-4a5b08e3.atlanticmetro.net
74.91.8.227	A	myvancloud.com
74.91.8.230	PTR	ip-4a5b08e6.atlanticmetro.net
74.91.8.245	PTR	ip-4a5b08f5.atlanticmetro.net