Robtex

Up: 218.32.32.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 218.32.40.0/22
Down right: 218.32.44.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
218.32.40.49	PTR	mail.tcbankec.com.tw
218.32.40.64	PTR	218.32.40.64.adsl.static.sparqnet.net
218.32.40.91	PTR	218.32.40.91.adsl.static.sparqnet.net
218.32.40.96	PTR	218.32.40.96.adsl.static.sparqnet.net
218.32.41.75	PTR	218.32.41.75.adsl.static.sparqnet.net
218.32.41.75	A	mail.soi.com.tw
218.32.42.168	PTR	218.32.42.168.adsl.static.sparqnet.net
218.32.42.168	A	mail1.tsurumipump.com.tw
218.32.42.168	A	mail1.withinspace.com
218.32.43.25	PTR	218.32.43.25.adsl.static.sparqnet.net
218.32.43.88	PTR	mail.changde-law.com
218.32.43.88	PTR	mail.leeyeun.com
218.32.43.88	PTR	mail.glin.com.tw
218.32.44.1	PTR	218.32.44.1.adsl.static.sparqnet.net
218.32.44.2	PTR	218.32.44.2.adsl.static.sparqnet.net
218.32.44.16	PTR	218.32.44.16.adsl.static.sparqnet.net
218.32.44.18	PTR	218.32.44.18.adsl.static.sparqnet.net
218.32.44.26	PTR	218.32.44.26.adsl.static.sparqnet.net
218.32.44.43	PTR	218.32.44.43.adsl.static.sparqnet.net
218.32.44.43	A	mx2.hbeemail.com
218.32.44.43	A	www.hbeemail.com
218.32.44.97	PTR	218.32.44.97.adsl.static.sparqnet.net
218.32.44.114	PTR	218.32.44.114.adsl.static.sparqnet.net
218.32.44.129	PTR	218.32.44.129.adsl.static.sparqnet.net
218.32.44.168	A	nakamotoeip.com
218.32.44.176	PTR	218.32.44.176.adsl.static.sparqnet.net
218.32.44.198	A	www.kaitrans.com.tw
218.32.44.211	PTR	218.32.44.211.adsl.static.sparqnet.net
218.32.44.219	PTR	218.32.44.219.adsl.static.sparqnet.net
218.32.44.226	PTR	218.32.44.226.adsl.static.sparqnet.net
218.32.45.99	PTR	218.32.45.99.adsl.static.sparqnet.net
218.32.45.129	PTR	218.32.45.129.adsl.static.sparqnet.net
218.32.46.50	PTR	218.32.46.50.adsl.static.sparqnet.net
218.32.46.130	PTR	218.32.46.130.adsl.static.sparqnet.net
218.32.46.136	PTR	218.32.46.136.adsl.static.sparqnet.net
218.32.46.145	PTR	218.32.46.145.adsl.static.sparqnet.net
218.32.46.146	PTR	218.32.46.146.adsl.static.sparqnet.net
218.32.46.153	PTR	218.32.46.153.adsl.static.sparqnet.net
218.32.46.168	PTR	218.32.46.168.adsl.static.sparqnet.net
218.32.46.209	PTR	218.32.46.209.adsl.static.sparqnet.net
218.32.46.218	PTR	218.32.46.218.adsl.static.sparqnet.net
218.32.46.219	PTR	218.32.46.219.adsl.static.sparqnet.net
218.32.46.233	PTR	218.32.46.233.adsl.static.sparqnet.net
218.32.46.242	PTR	218.32.46.242.adsl.static.sparqnet.net
218.32.47.0	PTR	218.32.47.0.adsl.static.sparqnet.net
218.32.47.25	A	wellbus.tw
218.32.47.25	A	www.wellbus.tw
218.32.47.105	PTR	218.32.47.105.adsl.static.sparqnet.net
218.32.47.115	PTR	218.32.47.115.adsl.static.sparqnet.net
218.32.47.179	PTR	218.32.47.179.adsl.static.sparqnet.net
218.32.47.184	PTR	218.32.47.184.adsl.static.sparqnet.net
218.32.47.195	PTR	218.32.47.195.adsl.static.sparqnet.net