Robtex

Up: 196.41.36.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 196.41.36.0/25
Down right: 196.41.36.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
196.41.36.22	A	mail.nac-tz.org
196.41.36.22	A	nac-tanzania.org
196.41.36.54	PTR	mail.repoa.or.tz
196.41.36.226	A+PTR	mail.eastafricaradio.com
196.41.36.226	PTR	mail.ippmedia.com
196.41.36.226	PTR	mail.eatv.tv