Robtex

Up: 123.125.68.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 123.125.68.0/25
Down right: 123.125.68.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.125.68.207	A+PTR	mx01-207.haojiao.baidu.com
123.125.68.207	A+PTR	mx01-207.newsletter.baidu.com
123.125.68.207	A	newsletter.baidu.com
123.125.68.210	A+PTR	mx01-210.haojiao.baidu.com
123.125.68.210	A+PTR	mx01-210.newsletter.baidu.com
123.125.68.223	A+PTR	mx01-223.haojiao.baidu.com
123.125.68.223	PTR	mx01-223.newsletter.baidu.com
123.125.68.229	A+PTR	mx01-229.haojiao.baidu.com
123.125.68.229	A+PTR	mx01-229.newsletter.baidu.com
123.125.68.234	A+PTR	mx01-234.haojiao.baidu.com
123.125.68.234	A+PTR	mx01-234.newsletter.baidu.com
123.125.68.236	PTR	mx01-236.haojiao.baidu.com
123.125.68.236	A+PTR	mx01-236.newsletter.baidu.com
123.125.68.240	PTR	mx01-240.haojiao.baidu.com
123.125.68.240	A+PTR	mx01-240.newsletter.baidu.com
123.125.68.245	A+PTR	mx01-245.haojiao.baidu.com
123.125.68.245	A+PTR	mx01-245.newsletter.baidu.com
123.125.68.249	A+PTR	mx01-249.haojiao.baidu.com
123.125.68.249	A+PTR	mx01-249.newsletter.baidu.com
123.125.68.254	PTR	mx01-254.haojiao.baidu.com
123.125.68.254	PTR	mx01-254.newsletter.baidu.com