Robtex

Up: 200.81.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 200.81.56.0/22
Down right: 200.81.60.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
200.81.56.3	PTR	ikara.digiware.com.co
200.81.56.3	A	ikara.digiware.net
200.81.56.4	A+PTR	akira.digiware.net
200.81.56.18	A+PTR	qmx56-18-smtp-in.digiware.net
200.81.56.18	A	lan1.redebanmulticolor.com.co
200.81.56.21	A+PTR	qmx56-21-smtp-in.digiware.net
200.81.56.22	A+PTR	qmx56-22-smtp-in.digiware.net
200.81.56.23	PTR	qmx56-23-smtp-in.digiware.net
200.81.56.24	PTR	qmx24-smtp-out.digiware.net
200.81.56.30	PTR	qmx30-smtp-in.digiware.net
200.81.56.32	PTR	qmx32-smtp-out.digiware.net
200.81.56.40	PTR	qmx40-smtp-in.digiware.net
200.81.56.40	A	correo1.museonacional.gov.co
200.81.56.41	A	qmx41-smtp-in.digiware.net
200.81.56.41	A	correo2.museonacional.gov.co
200.81.56.45	A	mail1.lasalle.edu.co
200.81.56.50	A	qmx50-smtp-in.digiware.net
200.81.56.50	A	mail.cemcolon.com.do
200.81.56.50	A	cemcolon.com.do
200.81.56.51	PTR	qmx51-smtp-in.digiware.net
200.81.56.61	A+PTR	qmx61-smtp-in.digiware.net
200.81.56.61	A	mail2.consorcioquimbo.com
200.81.56.61	A	mail2.fundacioncass.org
200.81.57.6	A	help.digiware.net
200.81.59.22	PTR	qmx59-22-smtp-in.digiware.net
200.81.59.23	A	qmx23-smtp-out.digiware.net
200.81.59.29	PTR	qmx29-smtp-in.digiware.net
200.81.59.29	A	correo1.terpel.com
200.81.59.30	A+PTR	qmx30-smtp-in.digiware.net
200.81.59.30	A	correo2.terpel.com
200.81.59.30	A	mx02.jbgcompras.org.ec
200.81.59.60	PTR	qmx60-smtp-out.digiware.net
200.81.59.60	A	mail1.consorcioyuma.com
200.81.59.60	A	mail1.fundacioncass.org
200.81.59.82	A	mail2.calidda.com.pe
200.81.59.83	PTR	qmx83-smtp-out.digiware.net
200.81.59.83	A	mail1.calidda.com.pe
200.81.59.100	PTR	gateway.digiware.net
200.81.59.190	A	pez.webstatistics.tech