Robtex

Up: 79.143.16.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 79.143.16.0/25
Down right: 79.143.16.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
79.143.16.5	PTR	ns4.port33.ru
79.143.16.5	A	ftp.port33.ru
79.143.16.5	A	webmaster.port33.ru
79.143.16.17	PTR	ns.port33.ru
79.143.16.17	PTR	smtp.port33.ru
79.143.16.17	A	termoplast.port33.ru
79.143.16.19	A+PTR	newmail.port33.ru
79.143.16.40	A	ranchetas.com
79.143.16.129	A	p129.n16.port33.ru
79.143.16.202	A	bitkananeretvi.net