Robtex

Up: 157.100.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 157.100.32.0/21
Down right: 157.100.40.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
157.100.33.1	A+PTR	nas1.cue.ecua.net.ec
157.100.33.2	A+PTR	c.ecua.net.ec
157.100.33.4	PTR	host-157-100-33-4.ecua.net.ec
157.100.33.6	A	cuenca.ecua.net.ec
157.100.33.7	A	rcue1.c.ecua.net.ec
157.100.35.4	PTR	host-157-100-35-4.ecua.net.ec
157.100.35.4	A	nasmacas.ecua.net.ec
157.100.35.10	A	dialmacas10.ecua.net.ec
157.100.35.11	A	dialmacas11.ecua.net.ec
157.100.35.12	A	dialmacas12.ecua.net.ec
157.100.35.16	A	dialmacas16.ecua.net.ec
157.100.35.17	PTR	host-157-100-35-17.ecua.net.ec
157.100.35.17	A	dialmacas17.ecua.net.ec
157.100.35.18	A	dialmacas18.ecua.net.ec
157.100.35.19	A	dialmacas19.ecua.net.ec
157.100.36.1	A+PTR	nas361mach.ecua.net.ec
157.100.36.2	A+PTR	autocost.com.ec
157.100.36.2	A+PTR	eo.ecua.net.ec
157.100.36.3	A	nas363mach.ecua.net.ec
157.100.36.21	A	dialmch1.ecua.net.ec
157.100.36.22	A	dialmch2.ecua.net.ec
157.100.36.25	A	dialmch5.ecua.net.ec
157.100.36.28	A	dialmch8.ecua.net.ec
157.100.36.32	A	dialmch12.ecua.net.ec
157.100.36.33	A	dialmch13.ecua.net.ec
157.100.36.34	A	dialmch14.ecua.net.ec
157.100.36.35	A	dialmch15.ecua.net.ec
157.100.36.48	PTR	host-157-100-36-48.ecua.net.ec
157.100.36.48	A	dialmch28.ecua.net.ec
157.100.37.1	A	ayora1.ecua.net.ec
157.100.37.2	A+PTR	ayora.ecua.net.ec
157.100.37.2	A	ga.pro.ec
157.100.37.2	A	pa.ga.pro.ec
157.100.38.35	PTR	host-157-100-38-35.ecua.net.ec
157.100.38.163	PTR	host-157-100-38-163.ecua.net.ec
157.100.39.113	PTR	host-157-100-39-113.ecua.net.ec
157.100.39.162	PTR	host-157-100-39-162.ecua.net.ec
157.100.39.192	PTR	host-157-100-39-192.ecua.net.ec
157.100.40.17	PTR	host-157-100-40-17.ecua.net.ec
157.100.40.49	PTR	host-157-100-40-49.ecua.net.ec
157.100.40.96	PTR	host-157-100-40-96.ecua.net.ec
157.100.40.98	PTR	host-157-100-40-98.ecua.net.ec
157.100.40.114	PTR	host-157-100-40-114.ecua.net.ec
157.100.40.128	PTR	host-157-100-40-128.ecua.net.ec
157.100.40.160	PTR	host-157-100-40-160.ecua.net.ec
157.100.40.162	PTR	host-157-100-40-162.ecua.net.ec
157.100.40.209	PTR	host-157-100-40-209.ecua.net.ec
157.100.40.210	PTR	host-157-100-40-210.ecua.net.ec
157.100.40.242	PTR	host-157-100-40-242.ecua.net.ec
157.100.41.82	PTR	host-157-100-41-82.ecua.net.ec
157.100.41.209	PTR	host-157-100-41-209.ecua.net.ec
157.100.42.146	A+PTR	mail.cip.org.ec
157.100.42.146	A	healthcareadministrationsalaryhq.com
157.100.42.146	A	ns.cip.org.ec
157.100.42.243	A+PTR	mail.arbecuador.com
157.100.43.18	PTR	host-157-100-43-18.ecua.net.ec
157.100.43.51	PTR	mastertransport.com
157.100.43.51	PTR	mail.mastertransport.com
157.100.43.51	PTR	sistemas.mastertransport.com
157.100.43.67	PTR	host-157-100-43-67.ecua.net.ec
157.100.43.114	PTR	mail.ecofarmscorp.com
157.100.43.251	A	mail.fibran.com.ec
157.100.43.251	A	comunicacion.fibran.com.ec
157.100.43.251	A	mail.paypal-processingserver56.ml
157.100.44.96	PTR	host-157-100-44-96.ecua.net.ec
157.100.44.98	PTR	host-157-100-44-98.ecua.net.ec
157.100.44.130	PTR	host-157-100-44-130.ecua.net.ec
157.100.45.1	PTR	host-157-100-45-1.ecua.net.ec
157.100.45.2	PTR	ecnet.ec
157.100.45.2	A	pi.pro.ec
157.100.45.2	A	q.ecua.net.ec
157.100.45.3	PTR	host-157-100-45-3.ecua.net.ec
157.100.45.16	PTR	host-157-100-45-16.ecua.net.ec
157.100.45.17	PTR	host-157-100-45-17.ecua.net.ec
157.100.45.17	A	uio4.ecua.net.ec
157.100.45.18	PTR	ambato.ecua.net.ec
157.100.45.20	A	mail.ecnet.ec
157.100.45.20	A	uio1.ecua.net.ec
157.100.45.34	PTR	webmail.ecua.net.ec
157.100.45.40	A	ecuanet.ec
157.100.45.45	A	mailrelay.accessram.net
157.100.45.74	A	dial35.q.ecua.net.ec
157.100.45.131	A+PTR	imss1.megadatos.net
157.100.45.131	A	dial641.q.ecua.net.ec
157.100.45.131	A	trend1.accessram.net
157.100.45.132	A	dial642.q.ecua.net.ec
157.100.45.153	A	dial64.q.ecua.net.ec
157.100.45.163	A	dial74.q.ecua.net.ec
157.100.45.164	A	dial75.q.ecua.net.ec
157.100.45.228	A	uio.ecua.net.ec
157.100.47.38	A	mail.expoforestal.com.ec
157.100.47.38	A	expoforestal.com.ec
157.100.47.146	PTR	host-157-100-47-146.ecua.net.ec