Robtex

Up: 210.31.128.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 210.31.136.0/22
Down right: 210.31.140.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
210.31.137.67	A+PTR	ic.tuli.cn
210.31.137.67	A+PTR	ic.tust.cn
210.31.137.67	A+PTR	ic.tuli.edu.cn
210.31.141.1	A+PTR	dns2.tuli.cn
210.31.141.1	A+PTR	dns2.tust.cn
210.31.141.1	A+PTR	dns2.tuli.edu.cn
210.31.141.2	PTR	www.tuli.cn
210.31.141.2	PTR	www.tust.cn
210.31.141.2	PTR	www.tuli.edu.cn
210.31.141.5	PTR	mail.tuli.cn
210.31.141.5	PTR	mail.tust.cn
210.31.141.5	PTR	mail.tuli.edu.cn
210.31.141.6	PTR	gw.tuli.cn
210.31.141.6	PTR	mail.tuli.cn
210.31.141.6	PTR	gw.tust.cn
210.31.141.11	PTR	www3.tuli.cn
210.31.141.11	PTR	www3.tust.cn
210.31.141.11	PTR	www3.tuli.edu.cn
210.31.141.19	PTR	www2.tuli.cn
210.31.141.19	PTR	www2.tust.cn
210.31.141.19	PTR	www2.tuli.edu.cn
210.31.141.24	A+PTR	sms.tuli.cn
210.31.141.24	A+PTR	sms.tust.cn
210.31.141.24	A+PTR	sms.tuli.edu.cn
210.31.141.45	A	jw.tuli.edu.cn
210.31.141.105	A	satanrabbit.com