Robtex

Up: 121.251.224.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 121.251.240.0/21
Down right: 121.251.248.0/21

IP	Type	Hostname
121.251.245.223	A+PTR	bysj.upc.edu.cn
121.251.252.195	A+PTR	wss.upc.edu.cn
121.251.252.202	A+PTR	mnt.upc.edu.cn
121.251.253.216	A	oucn.com.cn
121.251.254.3	A+PTR	peetc.upc.edu.cn
121.251.254.3	A	upc114.com
121.251.254.20	A	wss.upc.edu.cn
121.251.254.214	A+PTR	acm.upc.edu.cn
121.251.254.220	A	hardware.upc.edu.cn
121.251.254.223	PTR	bysj.upc.edu.cn
121.251.254.249	A	tcpe.upc.edu.cn
121.251.254.250	A	tcpe.upc.edu.cn
121.251.255.24	A+PTR	wzq.upc.edu.cn
121.251.255.24	A	cj.upc.edu.cn
121.251.255.24	A	sbc.upc.edu.cn
121.251.255.33	A	mail02.upc.edu.cn
121.251.255.35	A	bbs.upc.edu.cn
121.251.255.36	A	upc.edu.cn
121.251.255.36	A	www.upc.edu.cn
121.251.255.79	A	cie.upc.edu.cn
121.251.255.100	A+PTR	smail.upc.edu.cn
121.251.255.101	A+PTR	smailgw.upc.edu.cn