Robtex

Up: 109.87.144.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 109.87.148.0/23
Down right: 109.87.150.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
109.87.148.0	PTR	0.148.87.109.triolan.net
109.87.148.24	PTR	24.148.87.109.triolan.net
109.87.148.237	PTR	237.148.87.109.triolan.net
109.87.149.99	A	vladest.tk
109.87.149.175	PTR	175.149.87.109.triolan.net
109.87.149.184	PTR	184.149.87.109.triolan.net
109.87.149.194	PTR	194.149.87.109.triolan.net
109.87.149.194	A	power-hub.ru
109.87.149.227	PTR	227.149.87.109.triolan.net
109.87.149.231	A	home.voipster.biz
109.87.150.3	PTR	3.150.87.109.triolan.net
109.87.151.88	PTR	88.151.87.109.triolan.net
109.87.151.203	A+PTR	tl2.alvi.ua
109.87.151.203	A	www.sdk.com.ua
109.87.151.203	A	alvi2.com
109.87.151.238	PTR	238.151.87.109.triolan.net
109.87.151.255	PTR	255.151.87.109.triolan.net