Robtex

Up: 61.66.32.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 61.66.32.0/23
Down right: 61.66.34.0/23

IP	Type	Hostname
61.66.32.35	PTR	adsl-61-66-32-35.tc.sparqnet.net
61.66.32.49	PTR	adsl-61-66-32-49.tc.sparqnet.net
61.66.32.68	PTR	adsl-61-66-32-68.tc.sparqnet.net
61.66.32.68	A	paolai.com.tw
61.66.32.84	PTR	adsl-61-66-32-84.tc.sparqnet.net
61.66.32.100	PTR	dns.zenghsing.com.tw
61.66.32.101	PTR	notes.zenghsing.com.tw
61.66.32.104	PTR	adsl-61-66-32-104.tc.sparqnet.net
61.66.32.149	PTR	adsl-61-66-32-149.tc.sparqnet.net
61.66.32.155	PTR	adsl-61-66-32-155.tc.sparqnet.net
61.66.32.223	PTR	adsl-61-66-32-223.tc.sparqnet.net
61.66.32.243	PTR	adsl-61-66-32-243.tc.sparqnet.net
61.66.33.2	A+PTR	adsl-61-66-33-2.tc.sparqnet.net
61.66.33.5	A	adsl-61-66-33-5.tc.sparqnet.net
61.66.33.85	PTR	adsl-61-66-33-85.tc.sparqnet.net
61.66.33.98	A	adsl-61-66-33-98.tc.sparqnet.net
61.66.33.206	PTR	adsl-61-66-33-206.tc.sparqnet.net
61.66.33.215	PTR	adsl-61-66-33-215.tc.sparqnet.net
61.66.33.221	PTR	adsl-61-66-33-221.tc.sparqnet.net
61.66.33.238	PTR	adsl-61-66-33-238.tc.sparqnet.net
61.66.34.138	PTR	adsl-61-66-34-138.tc.sparqnet.net
61.66.34.154	PTR	adsl-61-66-34-154.tc.sparqnet.net
61.66.34.205	PTR	adsl-61-66-34-205.tc.sparqnet.net
61.66.34.208	PTR	adsl-61-66-34-208.tc.sparqnet.net
61.66.34.210	PTR	adsl-61-66-34-210.tc.sparqnet.net
61.66.34.238	PTR	adsl-61-66-34-238.tc.sparqnet.net
61.66.34.239	PTR	adsl-61-66-34-239.tc.sparqnet.net
61.66.35.2	PTR	adsl-61-66-35-2.tc.sparqnet.net
61.66.35.5	PTR	adsl-61-66-35-5.tc.sparqnet.net
61.66.35.33	PTR	adsl-61-66-35-33.tc.sparqnet.net
61.66.35.57	PTR	adsl-61-66-35-57.tc.sparqnet.net
61.66.35.146	PTR	dns.srsuntour.com.tw
61.66.35.171	PTR	adsl-61-66-35-171.tc.sparqnet.net
61.66.35.184	PTR	adsl-61-66-35-184.tc.sparqnet.net