Robtex

Up: 200.31.80.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 200.31.81.0/25
Down right: 200.31.81.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
200.31.81.20	PTR	mail.solidda.com
200.31.81.20	PTR	mail.beable.com.co
200.31.81.20	PTR	mail.technologistics.com.co
200.31.81.35	PTR	mail.topmanagement.com.co
200.31.81.81	PTR	movilisimo.com.co
200.31.81.81	PTR	technologistics.com.co
200.31.81.82	A+PTR	mail.fiducor.com
200.31.81.130	PTR	www1.tecnoconsulta.com
200.31.81.130	A	infoflora.com
200.31.81.130	A	www.infoflora.com
200.31.81.131	PTR	www1.tecnoconsulta.com
200.31.81.131	A	abacus-re.com
200.31.81.132	PTR	www1.tecnoconsulta.com
200.31.81.133	PTR	www1.tecnoconsulta.com
200.31.81.134	PTR	www1.tecnoconsulta.com
200.31.81.135	PTR	www1.tecnoconsulta.com
200.31.81.136	PTR	www1.tecnoconsulta.com
200.31.81.137	PTR	www1.tecnoconsulta.com
200.31.81.138	PTR	www1.tecnoconsulta.com
200.31.81.139	PTR	www1.tecnoconsulta.com
200.31.81.150	PTR	excalibur.tecnoconsulta.com
200.31.81.151	PTR	excalibur.tecnoconsulta.com
200.31.81.151	A	mail.ahk-colombia.com
200.31.81.152	PTR	excalibur.tecnoconsulta.com
200.31.81.152	A	mail.c3fes.net
200.31.81.153	PTR	excalibur.tecnoconsulta.com
200.31.81.153	A	mail.disuiza.com
200.31.81.153	A	mail.tsqsa.com
200.31.81.154	PTR	excalibur.tecnoconsulta.com
200.31.81.154	A	mail.digisource.biz
200.31.81.155	A+PTR	anastasis.tecnoconsulta.com
200.31.81.155	A	mail2.andesco.org.co
200.31.81.155	A	mail2.ahk-colombia.com
200.31.81.156	PTR	excalibur.tecnoconsulta.com
200.31.81.157	PTR	excalibur.tecnoconsulta.com
200.31.81.158	PTR	excalibur.tecnoconsulta.com
200.31.81.159	PTR	excalibur.tecnoconsulta.com
200.31.81.161	PTR	mail.tecnoconsulta.com
200.31.81.161	A	mail.digisource.biz
200.31.81.161	A	mail.m2c.co
200.31.81.162	PTR	mail.tecnoconsulta.com
200.31.81.162	A	mail.pactoglobal-colombia.org
200.31.81.162	A	mail.pactoglobalcolombia.org