Robtex

Up: 131.0.136.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 131.0.136.0/23
Down right: 131.0.138.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
131.0.136.1	PTR	ds136-1.dwsistenas.net
131.0.136.2	A	dws02.dwsistemas.net
131.0.136.2	A	dws00.dwsistemas.net
131.0.136.2	A	dws00.dwsistemas.net.co
131.0.136.3	PTR	dws05.dwsistemas.net
131.0.136.3	PTR	ns3.dwsistemas.net
131.0.136.11	PTR	srv12.dwsistenas.net
131.0.136.11	A	correo.almara.com.co
131.0.136.11	A	correo.desdelcampoalamesa.com
131.0.136.14	A	mail.esteticajennydiaz.co
131.0.136.14	A	rodarangos.com
131.0.136.14	A	primeromujer.com
131.0.136.18	PTR	tauro.dwsistemas.net
131.0.136.18	A	coins-colombia.com
131.0.136.18	A	mail.dwsistemas.net
131.0.136.19	PTR	webmail.siacolombia.com.co
131.0.136.19	PTR	correo.siacolombia.com.co
131.0.136.19	A	avicolasanmartin.com
131.0.136.21	PTR	ds136-21.dwsistenas.net
131.0.136.21	A	www.feisa.com.co
131.0.136.21	A	feisa.com.co
131.0.136.24	A	avicolasanmartin.com
131.0.136.24	A	correo.ararysas.com
131.0.136.28	PTR	srv101.dwsistenas.net
131.0.136.28	A	articulo20.com.co
131.0.136.28	A	webmail.articulo20.com.co
131.0.136.29	PTR	tauro.datawareltda.com
131.0.136.35	A+PTR	srv100.dwsistemas.net
131.0.136.35	A	comprasypagos.net
131.0.136.35	A	pedidosave.com
131.0.136.36	A+PTR	srv01cp.dwsistemas.net
131.0.136.36	A	visionintegral.org
131.0.136.36	A	www.visionintegral.org
131.0.136.39	PTR	srv01.dwsistemas.net
131.0.136.39	A	agmontenegro.com
131.0.136.40	PTR	srv06.dwsistenas.net
131.0.136.40	A	innventopymes.com
131.0.136.40	A	scon.com.co
131.0.136.41	PTR	srv02.dwsistemas.net
131.0.136.43	PTR	lx005.dwsistemas.net
131.0.136.49	PTR	ds136-49.dwsistenas.net
131.0.136.49	A	correo.saludtrec.com
131.0.136.49	A	mail.dondeviajo.com
131.0.136.53	A	dwsistemas.net
131.0.136.54	PTR	ds136-54.dwsistenas.net
131.0.136.54	A	codendesing.com
131.0.136.55	PTR	ds136-55.dwsistenas.net
131.0.136.55	A	www.cfservicios.com
131.0.136.55	A	correo.moldesmedellin.com
131.0.136.56	A	www.novalab.com.co
131.0.136.56	A	novalab.com.co
131.0.136.56	A	mail01.dwsistemas.net
131.0.136.58	A	www.morarbe.com.co
131.0.136.60	PTR	ds136-60.dwsistenas.net
131.0.136.60	A	www.dwsistemas.com
131.0.136.60	A	dwsistemas.com
131.0.136.66	PTR	ds136-66.dwsistenas.net
131.0.136.66	A	elmundo.com
131.0.136.66	A	www.elmundo.com.co
131.0.136.68	A	mail.dws.solutions
131.0.136.68	A	juanff.com
131.0.136.68	A	dws.solutions
131.0.136.75	PTR	ds136-175.dwsistenas.net
131.0.136.75	A	www.aveonline.co
131.0.136.75	A	aveonline.co
131.0.136.89	PTR	ds136-89.dwsistenas.net
131.0.136.89	A	ayeingenieros.com
131.0.136.89	A	www.comprasypagos.com
131.0.136.123	PTR	lx023.dwsistemas.net
131.0.136.158	PTR	andantte.com
131.0.136.158	A+PTR	www.andantte.com
131.0.136.158	PTR	ds136-158.dwsistenas.net