Robtex

Up: 203.148.216.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.148.220.0/23
Down right: 203.148.222.0/23

IP	Type	Hostname
203.148.220.112	PTR	mscm.mfec.co.th
203.148.220.113	PTR	insight.mfec.co.th
203.148.220.113	PTR	mysite.insight.mfec.co.th
203.148.222.121	PTR	static-ip.anet.net.th
203.148.222.139	PTR	static-ip.anet.net.th
203.148.222.170	PTR	static-ip.anet.net.th
203.148.222.218	PTR	static-ip.anet.net.th
203.148.222.253	PTR	static-ip.anet.net.th