Robtex

Up: 91.144.136.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 91.144.140.0/23
Down right: 91.144.142.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.144.140.0	PTR	dynamicip-91-144-140-0.pppoe.kzn.ertelecom.ru
91.144.140.2	PTR	dynamicip-91-144-140-2.pppoe.kzn.ertelecom.ru
91.144.140.5	A+PTR	mail.finist-soft.ru
91.144.140.10	PTR	dynamicip-91-144-140-10.pppoe.kzn.ertelecom.ru
91.144.140.10	A	monitoring.kazandom.ru
91.144.140.10	A	mx1.kazandom.ru
91.144.140.11	PTR	dynamicip-91-144-140-11.pppoe.kzn.ertelecom.ru
91.144.140.11	A	mail.kazandom.ru
91.144.140.13	PTR	dynamicip-91-144-140-13.pppoe.kzn.ertelecom.ru
91.144.140.53	A+PTR	mail.visma-arkhyz.ru
91.144.140.53	A	ns1.visma-arkhyz.ru
91.144.140.67	PTR	dynamicip-91-144-140-67.pppoe.kzn.ertelecom.ru
91.144.140.67	A	sb.tatarstan.ru
91.144.140.146	PTR	dynamicip-91-144-140-146.pppoe.kzn.ertelecom.ru
91.144.140.146	A	smtp.kirkazan.ru
91.144.140.146	A	smtp2.kirkazan.ru
91.144.140.162	PTR	office.kzn.ertelecom.ru
91.144.140.179	A	mail.tts.ru
91.144.140.208	PTR	dynamicip-91-144-140-208.pppoe.kzn.ertelecom.ru
91.144.141.72	PTR	home.inter-projects.ru
91.144.141.72	PTR	91x144x141x72.static-customer.kzn.ertelecom.ru
91.144.141.72	A	inter-projects.ru
91.144.141.80	PTR	91x144x141x80.static-customer.kzn.ertelecom.ru
91.144.141.80	A	antares.tk
91.144.141.90	A	musicaldecadence.ru
91.144.141.90	A	www.musicaldecadence.ru
91.144.141.104	A	sb.enpe.ru
91.144.141.110	PTR	91x144x141x110.static-customer.kzn.ertelecom.ru
91.144.141.110	A	esm-kazan.ru
91.144.141.110	A	srv-01.future-art.ru
91.144.141.116	PTR	91x144x141x116.static-customer.kzn.ertelecom.ru
91.144.141.122	PTR	mail.voltkin.ru
91.144.141.122	A	voltkin.ru
91.144.141.154	PTR	dynamicip-91-144-141-154.pppoe.kzn.ertelecom.ru
91.144.141.171	PTR	dynamicip-91-144-141-171.pppoe.kzn.ertelecom.ru
91.144.141.209	PTR	unisoftp.ru
91.144.141.209	PTR	mail.unisoftp.ru
91.144.141.209	A	iissoft.ru
91.144.141.221	PTR	mail.volga-avtomatika.ru
91.144.141.221	PTR	mail.volgapromcompressor.ru
91.144.141.247	PTR	91x144x141x247.static-business.kzn.ertelecom.ru
91.144.142.2	PTR	dynamicip-91-144-142-2.pppoe.kzn.ertelecom.ru
91.144.142.3	PTR	dynamicip-91-144-142-3.pppoe.kzn.ertelecom.ru
91.144.142.11	PTR	mail.ppmr.ru
91.144.142.15	PTR	mail.kirkazan.ru
91.144.142.19	PTR	91x144x142x19.static-business.kzn.ertelecom.ru
91.144.142.52	PTR	91x144x142x52.static-business.kzn.ertelecom.ru
91.144.142.52	A	kaz-saturn.ru
91.144.142.59	PTR	mx2.barsmedia.ru
91.144.142.59	A	mail3.barsmedia.ru
91.144.142.68	A	uksloboda.ru
91.144.142.72	PTR	npovti.ru
91.144.142.80	PTR	91x144x142x80.static-business.kzn.ertelecom.ru
91.144.142.86	A+PTR	garsoft.ru
91.144.142.86	PTR	mail.garsoft.ru
91.144.142.86	A+PTR	rb.garsoft.ru
91.144.142.90	PTR	kazan.rostagroup.ru
91.144.142.125	PTR	91x144x142x125.static-business.kzn.ertelecom.ru
91.144.142.145	A	mail.vitacore.ru
91.144.142.160	PTR	kiel-kazan.ru
91.144.142.181	PTR	91x144x142x181.static-business.kzn.ertelecom.ru
91.144.142.181	A	konstanta.pro
91.144.142.181	A	remote.konstanta.pro
91.144.142.190	PTR	kazan.rostagroup.ru
91.144.142.191	PTR	91x144x142x191.static-business.kzn.ertelecom.ru
91.144.142.191	A	kazan.it.ru
91.144.142.201	PTR	91x144x142x201.static-business.kzn.ertelecom.ru
91.144.142.201	A	avi-rc.ru
91.144.142.247	A	relay.laconix.com
91.144.142.247	A	relay.laconix.net
91.144.143.2	PTR	91x144x143x2.static-business.kzn.ertelecom.ru
91.144.143.11	PTR	a82.kazan-apteki.ru
91.144.143.16	PTR	91x144x143x16.static-business.kzn.ertelecom.ru
91.144.143.16	A	mail2.kazan.rostagroup.ru
91.144.143.26	PTR	kazan.alita.su
91.144.143.36	A+PTR	ertelecom.grand-ts.ru
91.144.143.36	A	mail2.grand-ts.ru
91.144.143.49	A	mail.tatdor.com
91.144.143.71	PTR	91x144x143x71.static-business.kzn.ertelecom.ru
91.144.143.72	PTR	mail.kirkazan.ru
91.144.143.106	A+PTR	relaytest.ankorbank.ru
91.144.143.106	A+PTR	webmail.ankorbank.ru
91.144.143.106	A	d.ankorbank.ru
91.144.143.110	PTR	91x144x143x110.static-business.kzn.ertelecom.ru
91.144.143.131	PTR	91x144x143x131.static-business.kzn.ertelecom.ru
91.144.143.131	A	escrm.ru
91.144.143.155	PTR	91x144x143x155.static-business.kzn.ertelecom.ru
91.144.143.212	PTR	91x144x143x212.static-customer.kzn.ertelecom.ru
91.144.143.212	A	gleboty.ru
91.144.143.255	PTR	91x144x143x255.static-customer.kzn.ertelecom.ru