Robtex

Up: 203.148.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 203.148.16.0/21
Down right: 203.148.24.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.148.16.28	A	mail.laparklane.com
203.148.18.32	PTR	static-ip-32-18-148-203.anlai.com
203.148.18.48	PTR	static-ip-48-18-148-203.anlai.com
203.148.18.160	PTR	static-ip-160-18-148-203.anlai.com
203.148.19.114	PTR	static-ip-114-19-148-203.anlai.com
203.148.19.194	PTR	static-ip-194-19-148-203.anlai.com
203.148.20.4	PTR	spam.systex.com.cn
203.148.20.18	PTR	static-ip-18-20-148-203.anlai.com
203.148.20.18	A	mail.nbaluggage.com.cn
203.148.20.82	A	fftchina.cn
203.148.20.108	A	mail.yongjida.com
203.148.20.108	A	my100g.com
203.148.20.109	A	heightwaytech.com
203.148.20.115	A+PTR	spam.systex.com.cn
203.148.20.115	A	spam.systexucom.com
203.148.20.115	A	spam.ucom.net.cn
203.148.20.146	PTR	static-ip-146-20-148-203.rev.dyxnet.com
203.148.20.147	PTR	static-ip-147-20-148-203.anlai.com
203.148.20.147	A	clarks.iqschool.cn
203.148.20.180	A	henrycats.com
203.148.21.19	PTR	uecsh.com
203.148.21.19	PTR	mail.uecsh.com
203.148.21.27	A	uecsh.com
203.148.21.43	A	mail.isc-cn.com
203.148.21.178	A	anjiusedcar.com
203.148.23.137	A	andchin-2.htccomm.com.cn
203.148.24.51	PTR	static-ip-51-24-148-203.rev.dyxnet.com
203.148.24.51	A	tscprinters.com.cn
203.148.24.52	A	spam.tscprinters.com.cn
203.148.24.176	PTR	static-ip-176-24-148-203.anlai.com
203.148.24.177	PTR	static-ip-177-24-148-203.anlai.com
203.148.24.177	A	4008-197-197.net
203.148.24.177	A	4008-197-197.com
203.148.25.66	PTR	static-ip-66-25-148-203.anlai.com
203.148.25.160	PTR	static-ip-160-25-148-203.anlai.com
203.148.25.226	PTR	static-ip-226-25-148-203.anlai.com
203.148.27.131	PTR	static-ip-131-27-148-203.anlai.com
203.148.27.131	A	www.centaline.com.cn
203.148.27.147	PTR	static-ip-147-27-148-203.anlai.com
203.148.27.147	A	dns1.centaline.com.cn
203.148.30.66	PTR	static-ip-66-30-148-203.anlai.com