Robtex

Up: 91.220.40.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 91.220.40.0/26
Down right: 91.220.40.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.220.40.0	PTR	host-0.hogatex.ch
91.220.40.1	PTR	gw-hogatex.hogatex.ch
91.220.40.5	PTR	fw1.hogatex.ch
91.220.40.8	PTR	host-8.hogatex.ch
91.220.40.8	A	www.goasp.ch
91.220.40.8	A	mail.9ag.ch
91.220.40.9	A+PTR	mail.goasp.ch
91.220.40.9	A	mail.go2cloud.ch
91.220.40.9	A	smtpout.goasp.ch
91.220.40.10	PTR	host-10.hogatex.ch
91.220.40.13	PTR	host-13.hogatex.ch
91.220.40.23	PTR	host-23.hogatex.ch
91.220.40.24	PTR	host-24.hogatex.ch
91.220.40.25	PTR	host-25.hogatex.ch
91.220.40.34	PTR	fe0-1.r2.hogatex.ch
91.220.40.35	PTR	host-35.hogatex.ch
91.220.40.38	PTR	host-38.hogatex.ch
91.220.40.41	PTR	fw-voip.hogatex.ch
91.220.40.42	PTR	fw1-voip.hogatex.ch
91.220.40.44	PTR	host-44.hogatex.ch
91.220.40.47	PTR	host-47.hogatex.ch
91.220.40.50	PTR	host-50.hogatex.ch
91.220.40.52	PTR	host-52.hogatex.ch
91.220.40.56	PTR	host-56.hogatex.ch
91.220.40.58	PTR	host-58.hogatex.ch
91.220.40.59	PTR	host-59.hogatex.ch
91.220.40.60	PTR	host-60.hogatex.ch
91.220.40.62	PTR	host-62.hogatex.ch
91.220.40.63	PTR	host-63.hogatex.ch
91.220.40.71	PTR	host-71.hogatex.ch
91.220.40.74	PTR	host-74.hogatex.ch
91.220.40.80	PTR	host-80.hogatex.ch
91.220.40.82	PTR	host-82.hogatex.ch
91.220.40.87	PTR	host-87.hogatex.ch
91.220.40.95	PTR	host-95.hogatex.ch
91.220.40.98	PTR	host-98.hogatex.ch
91.220.40.100	PTR	host-100.hogatex.ch
91.220.40.103	PTR	host-103.hogatex.ch
91.220.40.105	PTR	host-105.hogatex.ch
91.220.40.106	PTR	host-106.hogatex.ch
91.220.40.110	PTR	host-110.hogatex.ch
91.220.40.114	PTR	host-114.hogatex.ch
91.220.40.121	PTR	host-121.hogatex.ch
91.220.40.122	PTR	host-122.hogatex.ch
91.220.40.126	PTR	host-126.hogatex.ch