Robtex

Up: 154.72.24.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 154.72.28.0/23
Down right: 154.72.30.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
154.72.28.3	A	ns1.protocolsafrica.com
154.72.28.3	A	mail.protocolsafrica.net
154.72.28.3	A	protocolsafrica.com
154.72.28.4	A	mail2.protocolsafrica.com
154.72.28.4	A	ns2.protocolsafrica.com
154.72.31.106	A	btmangola.com
154.72.31.106	A	mail.btmangola.com