Robtex

Up: 188.234.136.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 188.234.140.0/23
Down right: 188.234.142.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
188.234.140.76	PTR	dynamicip-188-234-140-76.pppoe.penza.ertelecom.ru
188.234.140.77	PTR	188-234-140-77.ertelecom.ru
188.234.140.77	A	r2---sn-xguxaxjvh-8v1e.googlevideo.com
188.234.140.78	PTR	dynamicip-188-234-140-78.pppoe.penza.ertelecom.ru
188.234.140.78	A	r3.sn-xguxaxjvh-8v1e.gvt1.com
188.234.140.78	A	r3.sn-xguxaxjvh-8v1e.googlevideo.com
188.234.140.80	PTR	dynamicip-188-234-140-80.pppoe.penza.ertelecom.ru
188.234.140.80	A	r5.sn-xguxaxjvh-8v1e.googlevideo.com
188.234.140.80	A	r5.sn-xguxaxjvh-8v1e.gvt1.com
188.234.140.88	PTR	dynamicip-188-234-140-88.pppoe.penza.ertelecom.ru
188.234.140.91	PTR	dynamicip-188-234-140-91.pppoe.penza.ertelecom.ru
188.234.140.123	PTR	dynamicip-188-234-140-123.pppoe.penza.ertelecom.ru
188.234.140.226	PTR	dynamicip-188-234-140-226.pppoe.penza.ertelecom.ru
188.234.141.33	PTR	dynamicip-188-234-141-33.pppoe.penza.ertelecom.ru
188.234.141.33	A	api.playkey.net
188.234.141.33	A	static.playkey.net
188.234.141.34	PTR	dynamicip-188-234-141-34.pppoe.penza.ertelecom.ru
188.234.141.34	A	ads2.playkey.net
188.234.141.117	PTR	188-234-141-117.ertelecom.ru
188.234.141.201	A+PTR	mail.qwerty.perm.ru
188.234.141.201	A	ns4.qwerty.perm.ru
188.234.141.218	PTR	dynamicip-188-234-141-218.pppoe.penza.ertelecom.ru
188.234.142.172	PTR	dynamicip-188-234-142-172.pppoe.penza.ertelecom.ru
188.234.142.250	PTR	dynamicip-188-234-142-250.pppoe.penza.ertelecom.ru
188.234.143.35	PTR	dynamicip-188-234-143-35.pppoe.penza.ertelecom.ru
188.234.143.191	A	equila-ipmi.voronezh.ertelecom.ru