Robtex

Up: 109.106.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 109.106.20.0/23
Down right: 109.106.22.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
109.106.20.223	PTR	109.106.20.223.sumtel.ua
109.106.20.223	A	ns4.ns1.ns5.ombugew.com
109.106.20.232	PTR	109.106.20.232.sumtel.ua
109.106.20.232	A	ns3.ns1.ns6.ombugew.com
109.106.20.232	A	ns2.ns3.ns4.ns2.ns1.ns2.ns3.ns1.davujuz.com
109.106.21.169	PTR	109.106.21.169.sumtel.ua