Robtex

Up: 31.216.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 31.216.16.0/21
Down right: 31.216.24.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
31.216.16.1	PTR	testhost.lncsa.com.16.216.31.in-addr.arpa
31.216.17.1	PTR	testhost.lncsa.com.17.216.31.in-addr.arpa
31.216.18.1	PTR	testhost.lncsa.com.18.216.31.in-addr.arpa
31.216.19.1	PTR	testhost.lncsa.com.19.216.31.in-addr.arpa
31.216.20.1	PTR	testhost.lncsa.com.20.216.31.in-addr.arpa
31.216.21.1	PTR	testhost.lncsa.com.21.216.31.in-addr.arpa
31.216.22.1	PTR	testhost.lncsa.com.22.216.31.in-addr.arpa
31.216.23.1	PTR	testhost.lncsa.com.23.216.31.in-addr.arpa
31.216.24.200	PTR	flavius.apartia.fr
31.216.24.200	A	ashtanga-yoga-lausanne.com
31.216.24.200	A	critikart.net
31.216.24.201	PTR	flavius.cruisefish.net
31.216.24.215	PTR	trajan.apartia.fr
31.216.24.215	A	agora.yoga
31.216.24.215	A	gannac.fr
31.216.24.219	PTR	zfs.bsdsx.fr
31.216.24.219	A	slave-dns.bsdsx.fr
31.216.24.219	A	ns2.dotbsd-fr.org
31.216.24.220	PTR	zalhix.hinowar.com
31.216.24.224	A+PTR	jupiter.unix-scripts.info
31.216.24.224	A	jupiter-completel.unix-scripts.info
31.216.24.224	A	jupiter-nerim.unix-scripts.info
31.216.25.1	PTR	testhost.lncsa.com.25.216.31.in-addr.arpa
31.216.26.1	PTR	testhost.lncsa.com.26.216.31.in-addr.arpa
31.216.27.1	PTR	testhost.lncsa.com.27.216.31.in-addr.arpa
31.216.29.1	A+PTR	sw-cab-wan-vl1318.lncsa.com
31.216.30.2	A	dominium.lncsa.com
31.216.30.3	A	dominium-tel.lncsa.com
31.216.31.5	A	mailing-out-vty-5.lncsa.com
31.216.31.48	A	mailing-out-vty-48.lncsa.com
31.216.31.104	A	mailing-out-vty-104.lncsa.com
31.216.31.157	A	mailing-out-vty-157.lncsa.com
31.216.31.201	A	mailing-out-vty-201.lncsa.com
31.216.31.228	A	mailing-out-vty-228.lncsa.com
31.216.31.236	A	mailing-out-vty-236.lncsa.com
31.216.31.240	A	mailing-out-vty-240.lncsa.com
31.216.31.255	A	mailing-out-vty-255.lncsa.com