Robtex

Up: 201.33.160.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 201.33.168.0/22
Down right: 201.33.172.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
201.33.170.10	PTR	10.170.33.201.k2telecom.net.br
201.33.170.70	PTR	mail.k2telecom.net.br
201.33.170.70	A	www.cerci.com.br
201.33.170.74	PTR	japuiba.k2telecom.net.br
201.33.170.74	A	fibernettelecom.com
201.33.170.75	PTR	cascatai.k2telecom.net.br
201.33.170.75	A	fibernettelecom.com
201.33.170.76	PTR	201-33-170-76.k2telecom.net.br
201.33.170.76	A	fibernettelecom.com
201.33.170.77	PTR	201-33-170-77.k2telecom.net.br
201.33.170.77	A	fibernettelecom.com
201.33.170.78	A	fibernettelecom.com
201.33.170.130	PTR	130.170.33.201.k2telecom.net.br
201.33.170.130	A	centralmundonetrj.com.br
201.33.170.130	A	www.centralmundonetrj.com.br
201.33.170.131	PTR	201-33-170-131.corporate.k2telecom.com.br
201.33.170.187	PTR	187.170.33.201.k2telecom.net.br
201.33.170.187	A	ns03.cbf.com.br
201.33.170.187	A	ns02.cbf.com.br
201.33.170.204	PTR	204.170.33.201.corporate.k2telecom.com.br
201.33.170.204	A	r1.sn-3ufv-nq0e.c.youtube.com
201.33.170.204	A	r1---sn-3ufv-nq0e.gvt1.com
201.33.170.205	PTR	205.170.33.201.corporate.k2telecom.com.br
201.33.170.207	PTR	207.170.33.201.k2telecom.net.br
201.33.172.1	PTR	201-33-172-1.k2telecom.net.br
201.33.172.5	PTR	ns2.k2telecom.net.br
201.33.172.5	A	k2telecom.net.br
201.33.172.24	PTR	24.172.33.201.k2telecom.net.br
201.33.172.25	PTR	25.172.33.201.k2telecom.net.br
201.33.172.26	PTR	ns1.k2telecom.net.br
201.33.172.26	A	mailserver.k2telecom.net.br
201.33.173.10	A	k2telecom.net.br
201.33.173.10	A	ns2.k2telecom.net.br
201.33.173.18	PTR	18.173.33.201.k2telecom.net.br
201.33.173.178	A	ns1.k2telecom.net.br
201.33.175.255	PTR	255.175.33.201.k2telecom.net.br