Robtex

Up: 177.88.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 177.89.0.0/17
Down right: 177.89.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
177.89.0.0	PTR	177-89-0-0.cable.cabotelecom.com.br
177.89.0.64	PTR	177-89-0-64.cable.cabotelecom.com.br
177.89.0.65	PTR	177-89-0-65.cable.cabotelecom.com.br
177.89.0.66	PTR	177-89-0-66.cable.cabotelecom.com.br
177.89.5.2	PTR	177-89-5-2.cable.cabotelecom.com.br
177.89.12.162	PTR	177-89-12-162.cable.cabotelecom.com.br
177.89.12.162	A	jaimedantas.com
177.89.13.207	PTR	177-89-13-207.cable.cabotelecom.com.br
177.89.16.2	PTR	177-89-16-2.cable.cabotelecom.com.br
177.89.19.83	PTR	177-89-19-83.cable.cabotelecom.com.br
177.89.19.84	PTR	177-89-19-84.cable.cabotelecom.com.br
177.89.23.78	PTR	177-89-23-78.cable.cabotelecom.com.br
177.89.24.64	PTR	177-89-24-64.cable.cabotelecom.com.br
177.89.37.76	PTR	177-89-37-76.cable.cabotelecom.com.br
177.89.43.42	PTR	177-89-43-42.cable.cabotelecom.com.br
177.89.46.101	PTR	177-89-46-101.cable.cabotelecom.com.br
177.89.50.11	PTR	177-89-50-11.cable.cabotelecom.com.br
177.89.51.135	PTR	177-89-51-135.cable.cabotelecom.com.br
177.89.53.185	PTR	177-89-53-185.cable.cabotelecom.com.br
177.89.89.207	PTR	177-89-89-207.cable.cabotelecom.com.br
177.89.90.0	PTR	177-89-90-0.cable.cabotelecom.com.br
177.89.90.1	PTR	177-89-90-1.cable.cabotelecom.com.br
177.89.90.2	PTR	177-89-90-2.cable.cabotelecom.com.br
177.89.90.3	PTR	177-89-90-3.cable.cabotelecom.com.br
177.89.91.84	PTR	177-89-91-84.cable.cabotelecom.com.br
177.89.99.0	PTR	177-89-99-0.cable.cabotelecom.com.br
177.89.99.0	A	www.elhgps.com
177.89.113.223	PTR	177-89-113-223.cable.cabotelecom.com.br
177.89.135.96	PTR	177-89-135-96.cable.cabotelecom.com.br
177.89.142.156	PTR	177-89-142-156.cable.cabotelecom.com.br
177.89.142.156	A	sigadm.com
177.89.142.156	A	sigadm.ddns.net
177.89.153.241	PTR	177-89-153-241.cable.cabotelecom.com.br
177.89.166.9	PTR	177-89-166-9.cable.cabotelecom.com.br
177.89.193.188	PTR	177-89-193-188.cable.cabotelecom.com.br
177.89.194.100	PTR	177-89-194-100.cable.cabotelecom.com.br
177.89.194.100	A	kotzuo.com
177.89.196.236	PTR	177-89-196-236.cable.cabotelecom.com.br
177.89.215.45	PTR	177-89-215-45.cable.cabotelecom.com.br
177.89.219.165	PTR	177-89-219-165.cable.cabotelecom.com.br
177.89.219.165	A	egridweb.com
177.89.231.13	PTR	177-89-231-13.cable.cabotelecom.com.br
177.89.255.253	PTR	netflix-cdn-ntl.cabotelecom.com.br
177.89.255.253	A	occ-2-732-1865.1.nflxso.net
177.89.255.253	A	occ-0-732-1801.1.nflxso.net
177.89.255.254	PTR	177-89-255-254.cable.cabotelecom.com.br
177.89.255.254	A	occ-2-732-1865.1.nflxso.net
177.89.255.254	A	occ-0-732-1801.1.nflxso.net