Robtex

Up: 190.61.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 190.61.128.0/18
Down right: 190.61.192.0/18
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
190.61.128.0	PTR	0.128.61.190.host.static.ifxnetworks.com
190.61.128.11	A	mail01.ifxnetworks.com
190.61.128.12	A	mail02.ifxnetworks.com
190.61.128.13	A	mail03.ifxnetworks.com
190.61.128.14	A	mail04.ifxnetworks.com
190.61.128.128	A+PTR	flexmail128.ifxnetworks.com
190.61.128.140	A	140.128.61.190.host.ifxnetworks.com
190.61.128.201	A	mail.ncsamericas.cl
190.61.128.201	A	webmail.flexmail.ifxnetworks.com
190.61.130.1	PTR	ns1.livingeffects.com
190.61.131.255	A	255.131.61.190.host.ifxnetworks.com
190.61.137.1	PTR	1.137.61.190.host.ifxnetworks.com
190.61.137.128	PTR	128.137.61.190.host.ifxnetworks.com
190.61.137.129	PTR	129.137.61.190.host.ifxnetworks.com
190.61.149.0	A+PTR	0.149.61.190.host.ifxnetworks.com
190.61.149.13	A	mail.oferviajes.com.ar
190.61.149.13	A	13.149.61.190.host.ifxnetworks.com
190.61.153.0	A+PTR	0.153.61.190.host.ifxnetworks.com
190.61.159.129	PTR	129.159.61.190.host.ifxnetworks.com
190.61.165.3	PTR	3.165.61.190.host.ifxnetworks.com
190.61.180.144	A	144.180.61.190.host.ifxnetworks.com
190.61.189.19	A	19.189.61.190.host.ifxnetworks.com
190.61.189.31	A	31.189.61.190.host.ifxnetworks.com
190.61.189.35	A	35.189.61.190.host.ifxnetworks.com
190.61.189.43	A	43.189.61.190.host.ifxnetworks.com
190.61.189.129	PTR	129.189.61.190.host.ifxnetworks.com
190.61.189.160	A	160.189.61.190.host.ifxnetworks.com
190.61.189.178	A	178.189.61.190.host.ifxnetworks.com
190.61.189.195	A	195.189.61.190.host.ifxnetworks.com
190.61.189.204	A	204.189.61.190.host.ifxnetworks.com
190.61.192.129	PTR	129.192.61.190.host.ifxnetworks.com
190.61.200.0	PTR	0.200.61.190.host.ifxnetworks.com
190.61.200.4	A	mail.gruposic.sysmails.com.ar
190.61.200.4	A	mail.gssoporte.com
190.61.200.4	A	mail.mundialescuelasdefutbol.com
190.61.202.2	A+PTR	2.202.61.190.host.ifxnetworks.com
190.61.202.2	A	servidor.tism.com.ar
190.61.202.2	A	ns2.tism.com.ar
190.61.204.246	PTR	246.204.61.190.host.ifxnetworks.com
190.61.207.0	PTR	ns1648.ztomy.com
190.61.208.0	PTR	0.208.61.190.host.ifxnetworks.com
190.61.208.1	PTR	1.208.61.190.host.ifxnetworks.com
190.61.208.2	PTR	2.208.61.190.host.ifxnetworks.com
190.61.208.3	PTR	3.208.61.190.host.ifxnetworks.com
190.61.208.4	A	4.208.61.190.host.ifxnetworks.com
190.61.208.10	A	10.208.61.190.host.ifxnetworks.com
190.61.208.11	A	beweevee.com
190.61.208.11	A	mail.keikendo.com
190.61.208.132	A	mail.eldirectorioweb.net
190.61.208.132	A	neobaires.com.ar
190.61.208.138	A	hammurabinoticias.com.ar
190.61.208.142	A	distribuidorapacifico.com
190.61.209.0	A+PTR	0.209.61.190.host.ifxnetworks.com
190.61.209.46	A	globalcorpca.net
190.61.209.46	A	www.cepoca.com
190.61.209.46	A	46.209.61.190.host.ifxnetworks.com
190.61.214.1	PTR	1.214.61.190.host.ifxnetworks.com
190.61.214.3	PTR	3.214.61.190.host.ifxnetworks.com
190.61.214.129	PTR	129.214.61.190.host.ifxnetworks.com
190.61.219.2	A	ci1-nc.toservers.com
190.61.219.5	A+PTR	ci4-nc.toservers.com
190.61.219.8	A+PTR	gorila.toservers.com
190.61.219.9	A	ns1.aupe-sa.com.ar
190.61.219.129	A+PTR	ci6-nc.toservers.com
190.61.219.134	A	mail.prestamo-solidario.com
190.61.219.135	PTR	lechuza-malo.toservers.com
190.61.219.135	A	grupooas.com.ar
190.61.219.135	A	mail.grupooas.com.ar
190.61.219.141	PTR	lemming-malo.toservers.com
190.61.220.1	PTR	ns1.greatpublishingweb.com
190.61.220.1	A	ns1.greatpublishingwebmedia.com
190.61.220.1	A	ns1.greatpublishingwebteam.com
190.61.220.3	PTR	relay.greatpublishingweb.com
190.61.220.137	A	reply.maingreatpublishingweb.com
190.61.220.144	A	originalgreatpublishingweb.com
190.61.220.145	A	reply.originalgreatpublishingweb.com
190.61.220.154	A	reply.greatpublishingwebteam.com
190.61.226.2	PTR	mta13.offeryoursmartclick.com
190.61.226.250	A	ns1.findyoursmartclick.com
190.61.226.250	A	ns1.yoursmartclickzone.com
190.61.226.251	A	ns2.offeryoursmartclick.com
190.61.228.56	A	ns1.quickemailnet.com
190.61.228.57	A	ns2.quickemailnet.com
190.61.228.59	A	reply.quickemailnet.com
190.61.239.2	PTR	mail.compassmx.com
190.61.239.2	A	email.compassmx.com
190.61.239.2	A	compassmx1.compassmx.com
190.61.239.10	A+PTR	10.239.61.190.host.ifxnetworks.com
190.61.239.10	A	www.pagoaltoque.net
190.61.242.200	A+PTR	200.242.61.190.host.ifxnetworks.com
190.61.245.1	A	ns1.rent-detector.com
190.61.245.2	A	ns2.rent-detector.com
190.61.246.74	A+PTR	74.246.61.190.host.ifxnetworks.com
190.61.247.1	A	ns1.masternetworkcorp.com
190.61.247.1	A	ns1.masternetworkcorpzone.com
190.61.247.2	A	ns2.masternetworkcorpzone.com
190.61.247.2	A	ns2.masternetworkcorp.com
190.61.250.0	PTR	0.250.61.190.host.ifxnetworks.com
190.61.250.1	A+PTR	1.250.61.190.host.ifxnetworks.com
190.61.250.2	A+PTR	2.250.61.190.host.ifxnetworks.com
190.61.250.3	A+PTR	3.250.61.190.host.ifxnetworks.com
190.61.250.4	A	4.250.61.190.host.ifxnetworks.com
190.61.250.129	A+PTR	adi.toservers.com
190.61.250.130	PTR	adiel.toservers.com
190.61.250.130	A	gsgastroshop.com.ar
190.61.250.130	A	yemmy.com.ar
190.61.251.67	PTR	ns1.web724.net
190.61.251.67	A	ns2.web724.com
190.61.251.68	A	pipe-consulting.com
190.61.251.68	A	www.griseldagarfunkel.com
190.61.251.68	A	griseldagarfunkel.com
190.61.253.194	A	sautoandina.com.co
190.61.253.194	A	mx.casacitroen.cl
190.61.253.194	A	mail.rioplatense.com
190.61.255.2	PTR	forti.swissjust.com
190.61.255.2	A	2.255.61.190.host.ifxnetworks.com
190.61.255.76	A	store.intcomex.com
190.61.255.84	A	mailmx3.intcomex.com
190.61.255.85	A	mailmx4.intcomex.com
190.61.255.255	A	255.255.61.190.host.ifxnetworks.com