Robtex

Up: 212.0.136.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 212.0.136.0/23
Down right: 212.0.138.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.0.136.50	A+PTR	mail.audit.gov.sd
212.0.136.214	PTR	ous_server1.ousudan.com
212.0.136.214	A	ous.edu.sd
212.0.138.38	PTR	nb_bdc_cou_08.sudatel.net
212.0.138.87	A	enb-sd.com
212.0.139.89	PTR	mail.nbs.com.sd
212.0.139.150	PTR	mic-dd.mic.com
212.0.139.150	PTR	mail.mof.gov.sd
212.0.139.150	PTR	smtp.mof.gov.sd
212.0.139.152	PTR	mic-dd.mic.com
212.0.139.158	PTR	mic-dd.mic.com
212.0.139.185	A	mx3.nbe.com.sd
212.0.139.186	A+PTR	mx4.nbe.com.sd
212.0.139.227	A+PTR	mail.alnilebank.com