Robtex

Up: 177.55.224.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 177.55.240.0/21
Down right: 177.55.248.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
177.55.240.82	PTR	177-55-240-82.netonda.com.br
177.55.240.82	A	ns2.netonda.com.br
177.55.240.210	A	ns.netonda.com.br
177.55.241.104	PTR	177-55-241-104.netonda.com.br
177.55.241.109	PTR	177-55-241-109.netonda.com.br
177.55.242.51	PTR	177-55-242-51.netonda.com.br
177.55.242.54	PTR	177-55-242-54.netonda.com.br
177.55.242.66	PTR	177-55-242-66.netonda.com.br
177.55.243.215	PTR	177-55-243-215.netonda.com.br
177.55.244.76	PTR	cache.google.com
177.55.244.76	A	r1---sn-4gxpu5n-4vge.googlevideo.com
177.55.244.77	PTR	cache.google.com
177.55.244.77	A	r2.sn-4gxpu5n-4vge.googlevideo.com
177.55.244.77	A	r2.sn-4gxpu5n-4vge.gvt1.com
177.55.244.78	PTR	cache.google.com
177.55.244.101	PTR	177-55-244-101.netonda.com.br
177.55.244.171	PTR	177-55-244-171.netonda.com.br
177.55.245.14	PTR	177-55-245-14.netonda.com.br
177.55.245.46	PTR	177-55-245-46.netonda.com.br
177.55.245.114	PTR	177-55-245-114.netonda.com.br
177.55.245.114	A	occ-1-1916-1865.1.nflxso.net
177.55.245.114	A	occ-1-1916-1123.1.nflxso.net
177.55.245.170	PTR	177-55-245-170.netonda.com.br
177.55.246.11	PTR	177-55-246-11.netonda.com.br
177.55.246.109	PTR	177-55-246-109.netonda.com.br
177.55.247.11	PTR	177-55-247-11.netonda.com.br
177.55.247.114	PTR	177-55-247-114.netonda.com.br
177.55.247.209	PTR	177-55-247-209.netonda.com.br
177.55.247.209	A	scontent.ffor20-1.fna.fbcdn.net
177.55.247.210	A	video.ffor20-1.fna.fbcdn.net
177.55.247.224	PTR	177-55-247-224.netonda.com.br
177.55.247.224	A	z-p3-scontent.ffor20-1.fna.fbcdn.net
177.55.247.225	PTR	177-55-247-225.netonda.com.br
177.55.247.225	A	instagram.ffor20-1.fna.fbcdn.net
177.55.247.226	PTR	177-55-247-226.netonda.com.br
177.55.247.226	A	media.ffor20-1.fna.whatsapp.net
177.55.248.202	PTR	177-55-248-202.netonda.com.br
177.55.248.202	A	jaguaruana-speedtest.lhprovedor.com.br
177.55.250.52	PTR	177-55-250-52.netonda.com.br
177.55.252.0	PTR	0.252.55.177.online.net.br
177.55.252.174	PTR	177-55-252-174.online.net.br
177.55.252.180	A	servnetiva.ivaeduca.com.br
177.55.253.2	A	www.online.net.br
177.55.253.4	PTR	177-55-253-4.online.net.br
177.55.253.10	PTR	177-55-253-10.online.net.br
177.55.253.33	PTR	177-55-253-33.online.net.br
177.55.253.36	PTR	177-55-253-36.online.net.br
177.55.253.40	PTR	177-55-253-40.online.net.br
177.55.253.61	PTR	177-55-253-61.online.net.br
177.55.253.66	PTR	66.253.55.177.online.net.br
177.55.253.66	A	speedtest.onlinetelecom.com.br
177.55.253.68	PTR	68.253.55.177.online.net.br
177.55.253.82	A	mcteck.com.br
177.55.253.99	PTR	177-55-253-99.online.net.br
177.55.253.143	PTR	177-55-253-143.online.net.br
177.55.254.1	PTR	177-55-254-1.online.net.br
177.55.254.4	PTR	177-55-254-4.online.net.br
177.55.254.66	PTR	66.254.55.177.online.net.br
177.55.254.77	PTR	177-55-254-77.online.net.br
177.55.254.110	PTR	177-55-254-110.online.net.br
177.55.254.114	PTR	177-55-254-114.online.net.br
177.55.254.114	A	ns2.online.net.br
177.55.254.114	A	ns2.onlinetelecom.com.br
177.55.254.118	PTR	177-55-254-118.online.net.br
177.55.254.118	A	ns.onlinetelecom.com.br
177.55.254.155	PTR	177-55-254-155.online.net.br
177.55.254.196	PTR	177-55-254-196.online.net.br
177.55.255.2	PTR	177-55-255-2.online.net.br
177.55.255.32	PTR	177-55-255-32.online.net.br
177.55.255.34	PTR	177-55-255-34.online.net.br
177.55.255.130	PTR	130.255.55.177.online.net.br
177.55.255.250	PTR	177-55-255-250.online.net.br