Robtex

Up: 131.161.254.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 131.161.254.0/25
Down right: 131.161.254.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
131.161.254.1	A+PTR	ns1.teisa.com.py
131.161.254.2	A+PTR	ns2.teisa.com.py
131.161.254.19	PTR	mail.ethicalshields.com.py
131.161.254.19	A	smtp3.itaipu.gov.py
131.161.254.19	A	smtp3.itaipu.gov.br
131.161.254.21	PTR	host21.teisa.com.py
131.161.254.21	A	ns3.itaipu.gov.br
131.161.254.21	A	ns1.itaipu.gov.py
131.161.254.22	PTR	host22.teisa.com.py
131.161.254.22	A	ns4.itaipu.gov.br
131.161.254.22	A	webmail.itaipu.gov.py
131.161.254.102	PTR	host102.teisa.com.py
131.161.254.150	PTR	mail.magno.com.py
131.161.254.150	A	correo.timbo.com.py
131.161.254.154	A+PTR	mail2.pronet.com.py
131.161.254.154	A	ns4.pronet.com.py
131.161.254.170	PTR	mail.veyco.com.py
131.161.254.186	PTR	host186.teisa.com.py
131.161.254.186	A	www.hogarfeliz.com.py
131.161.254.186	A	*.hogarfeliz.com.py
131.161.254.196	PTR	mail.icono.club
131.161.254.196	A	ecodigitales.com
131.161.254.198	PTR	host198.teisa.com.py
131.161.254.198	A	lucasaas.com
131.161.254.199	PTR	host199.teisa.com.py
131.161.254.199	A	ecommercepy.com
131.161.254.199	A	365saas.com
131.161.254.203	PTR	host203.teisa.com.py
131.161.254.203	A	npanel.icono.club
131.161.254.210	PTR	host210.teisa.com.py
131.161.254.210	A	serviciodigital.com.py
131.161.254.212	PTR	mail.grupoeditorialatlas.com
131.161.254.212	A	mail.pindu.com.py
131.161.254.212	A	mail.grupoeditorialatlas.com.py