Robtex

Up: 49.231.16.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 49.231.18.0/24
Down right: 49.231.19.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
49.231.18.9	A	ns1.up.ac.th
49.231.18.20	A+PTR	ns20.up.ac.th
49.231.18.21	A+PTR	mail.up.ac.th
49.231.18.23	PTR	49-231-18-23.sbn-idc.com
49.231.18.25	A+PTR	mailgw.up.ac.th
49.231.18.74	PTR	49-231-18-74.sbn-idc.com
49.231.18.74	A	www.lannacattle.com
49.231.18.97	PTR	49-231-18-97.sbn-idc.com
49.231.18.97	A	clm.up.ac.th
49.231.18.100	A+PTR	up.ac.th
49.231.18.100	A+PTR	www.up.ac.th
49.231.18.100	A	svr-dev-web.up.ac.th
49.231.18.105	PTR	49-231-18-105.sbn-idc.com
49.231.18.105	A	svr-dev-fac.up.ac.th
49.231.18.111	PTR	49-231-18-111.sbn-idc.com
49.231.18.111	A	www.reg.up.ac.th
49.231.18.111	A	reg.up.ac.th
49.231.18.139	PTR	49-231-18-139.sbn-idc.com
49.231.18.152	A	www.up.ac.th
49.231.18.152	A	svr-sql-web2.up.ac.th
49.231.18.161	PTR	49-231-18-161.sbn-idc.com
49.231.18.175	PTR	49-231-18-175.sbn-idc.com
49.231.18.175	A	politics.up.ac.th
49.231.18.231	PTR	49-231-18-231.sbn-idc.com
49.231.18.231	A	www.wattanapong.com
49.231.18.231	A	wattanapong.com