Robtex

Up: 87.121.0.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 87.121.0.0/25
Down right: 87.121.0.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
87.121.0.44	A+PTR	speedtest.neterra.net
87.121.0.44	A	sp1.neterra.net
87.121.0.45	PTR	87.121.0.45.neterra.net
87.121.0.80	A	ideaconsult.net
87.121.0.81	PTR	87.121.0.81.neterra.net
87.121.0.81	A	ns1.ideaconsult.net
87.121.0.82	PTR	87.121.0.82.neterra.net
87.121.0.82	A	ns2.ideaconsult.net
87.121.0.102	PTR	87.121.0.102.neterra.net
87.121.0.102	A	apartamenti.com
87.121.0.103	A	xn--80adilbac8acjucdtk.com
87.121.0.103	A	perdeta.net
87.121.0.103	A	aptekavarna.com
87.121.0.105	A	turquoisehometextile.com
87.121.0.105	A	megamashini.com
87.121.0.105	A	pokrivki.com
87.121.0.107	PTR	87.121.0.107.neterra.net
87.121.0.107	A	imoti.one
87.121.0.107	A	imotii.com
87.121.0.110	PTR	87.121.0.110.neterra.net
87.121.0.110	A	apartamentisofia.com
87.121.0.112	A	2oor.com
87.121.0.114	PTR	87.121.0.114.neterra.net
87.121.0.114	A	megavrati.com
87.121.0.114	A	lechenieto.com
87.121.0.165	PTR	87.121.0.165.neterra.net
87.121.0.165	A	bul.torguardvpnaccess.com
87.121.0.180	A	ns3.verax.net
87.121.0.181	A+PTR	ns4.verax.net
87.121.0.182	A+PTR	smtp.email.bg
87.121.0.198	PTR	87.121.0.198.neterra.net
87.121.0.198	A	pokeroffers.org
87.121.0.199	PTR	87.121.0.199.neterra.net
87.121.0.199	A	www.grinders.org
87.121.0.200	A+PTR	mail.healthydesk.bg
87.121.0.200	A	ns1.grindupdate.com
87.121.0.200	A	ns2.grindupdate.com
87.121.0.235	A	game-station.biz