Robtex

Up: 177.75.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 177.75.64.0/21
Down right: 177.75.72.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
177.75.64.54	PTR	54.64.75.177.in-addr.arpa
177.75.67.247	PTR	247.67.75.177.in-addr.arpa
177.75.68.97	PTR	97.68.75.177.in-addr.arpa
177.75.69.142	PTR	142.69.75.177.in-addr.arpa
177.75.69.150	A+PTR	reverso2.metalurgicamgs.com.br
177.75.69.150	A	dns1.metalurgicamgs.com.br
177.75.69.150	A	b.mx.metalurgicamgs.com.br
177.75.70.114	PTR	114.70.75.177.in-addr.arpa
177.75.70.114	A	mdbandalarga.com
177.75.71.66	PTR	66.71.75.177.in-addr.arpa
177.75.71.66	A	topnetpb.com.br
177.75.71.86	PTR	86.71.75.177.in-addr.arpa
177.75.71.86	A	intranet.bebidascoroa.com.br
177.75.71.147	PTR	147.71.75.177.in-addr.arpa
177.75.71.147	A	speedtest.tely.com.br
177.75.72.15	PTR	mail.tely.com.br
177.75.72.34	A+PTR	ns1.planetacyber.com.br
177.75.72.34	A	planetacyber.com.br
177.75.72.35	A	ns2.planetacyber.com.br
177.75.72.38	A+PTR	mxrelay.tely.com.br
177.75.72.114	PTR	114.72.75.177.in-addr.arpa
177.75.72.209	PTR	209.72.75.177.in-addr.arpa
177.75.72.209	A	external.fcpv2-2.fna.fbcdn.net
177.75.72.209	A	scontent.fcpv2-2.fna.fbcdn.net
177.75.72.210	PTR	210.72.75.177.in-addr.arpa
177.75.72.210	A	video.fcpv2-2.fna.fbcdn.net
177.75.72.222	PTR	222.72.75.177.in-addr.arpa
177.75.72.222	A	sonar.fcpv2-2.fna.fbcdn.net
177.75.72.224	PTR	224.72.75.177.in-addr.arpa
177.75.72.224	A	instagram.fcpv2-2.fna.fbcdn.net
177.75.72.225	PTR	225.72.75.177.in-addr.arpa
177.75.72.225	A	media.fcpv2-2.fna.whatsapp.net
177.75.72.232	PTR	232.72.75.177.in-addr.arpa
177.75.72.232	A	z-1-video.fcpv2-2.fna.fbcdn.net
177.75.72.232	A	z-1-external.fcpv2-2.fna.fbcdn.net
177.75.73.162	PTR	162.73.75.177.in-addr.arpa
177.75.73.162	A	bebidascoroa.com.br
177.75.73.253	PTR	253.73.75.177.in-addr.arpa
177.75.73.253	A	tjpb.jus.br
177.75.74.122	PTR	122.74.75.177.in-addr.arpa
177.75.74.122	A	intranet.bebidascoroa.com.br
177.75.75.162	PTR	162.75.75.177.in-addr.arpa
177.75.75.236	PTR	cache.google.com
177.75.75.236	A	r1.sn-uxat-w25e.googlevideo.com
177.75.75.236	A	r1.sn-uxat-w25e.c.android.clients.google.com
177.75.75.237	PTR	cache.google.com
177.75.75.238	PTR	cache.google.com
177.75.75.239	PTR	cache.google.com
177.75.75.240	PTR	cache.google.com
177.75.75.240	A	r5.sn-uxat-w25e.googlevideo.com
177.75.75.240	A	r5.sn-uxat-w25e.gvt1.com
177.75.75.241	PTR	cache.google.com
177.75.75.241	A	r6.sn-uxat-w25e.gvt1.com
177.75.75.241	A	r6.sn-uxat-w25e.googlevideo.com
177.75.76.21	PTR	21.76.75.177.in-addr.arpa
177.75.76.36	A	ns1cmjp.dnsgenerico.pb.gov.br
177.75.76.36	A	cmjp.pb.gov.br
177.75.76.36	A	ns1.cmjp.pb.gov.br
177.75.76.37	A	cmjp.pb.gov.br
177.75.76.37	A	ns2.cmjp.pb.gov.br
177.75.76.50	PTR	50.76.75.177.in-addr.arpa
177.75.76.50	A	www.cinep.pb.gov.br
177.75.76.50	A	cinep.pb.gov.br
177.75.76.162	PTR	162.76.75.177.in-addr.arpa
177.75.77.151	A+PTR	ns-rev-01.tely.com.br
177.75.77.153	A+PTR	ns-rev-02.tely.com.br
177.75.77.162	A+PTR	ns2.ifrn.edu.br
177.75.77.162	A	ns2.etfrn.br
177.75.77.162	A	ns2.cefetrn.br
177.75.77.230	A	ns2.dore.net.br
177.75.77.230	A	mail.dore.net.br
177.75.77.230	A	ns.dore.net.br
177.75.78.105	PTR	105.78.75.177.in-addr.arpa
177.75.78.154	PTR	154.78.75.177.in-addr.arpa
177.75.78.198	PTR	198.78.75.177.in-addr.arpa
177.75.78.198	A	avaty.com.br
177.75.78.198	A	www.avaty.com.br
177.75.79.53	PTR	53.79.75.177.in-addr.arpa
177.75.79.83	PTR	83.79.75.177.in-addr.arpa