Robtex

Up: 109.194.144.0/21
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Down left: 109.194.144.0/23
Down right: 109.194.146.0/23

IP	Type	Hostname
109.194.144.0	PTR	net144-0.hq.ertelecom.ru
109.194.145.203	PTR	net145-203.hq.ertelecom.ru
109.194.146.88	PTR	net146-88.hq.ertelecom.ru
109.194.146.110	PTR	net146-110.hq.ertelecom.ru
109.194.146.161	PTR	net146-161.hq.ertelecom.ru