Robtex

Up: 178.217.240.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 178.217.248.0/22
Down right: 178.217.252.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
178.217.248.1	PTR	host-248.1.e-malbork.net
178.217.248.1	A	ns2.e-malbork.pl
178.217.248.1	A	ns1.e-malbork.com
178.217.248.24	PTR	host-248.24.internet.malbork.pl
178.217.248.24	A	socza.no-ip.org
178.217.249.8	PTR	host-249.8.e-malbork.net
178.217.249.9	PTR	host-249.9.e-malbork.net
178.217.249.34	PTR	host-249.34.e-malbork.net
178.217.249.41	PTR	host-249.41.e-malbork.net
178.217.249.56	PTR	host-249.56.e-malbork.net
178.217.249.72	PTR	host-249.72.e-malbork.net
178.217.249.73	PTR	host-249.73.e-malbork.net
178.217.249.91	PTR	host-249.91.e-malbork.net
178.217.249.98	PTR	host-249.98.e-malbork.net
178.217.249.99	PTR	host-249.99.e-malbork.net
178.217.249.104	PTR	host-249.104.e-malbork.net
178.217.249.107	PTR	host-249.107.e-malbork.net
178.217.249.113	PTR	host-249.113.e-malbork.net
178.217.249.121	PTR	host-249.121.e-malbork.net
178.217.249.123	PTR	host-249.123.e-malbork.net
178.217.249.139	PTR	host-249.139.e-malbork.net
178.217.249.161	PTR	host-249.161.e-malbork.net
178.217.249.176	PTR	host-249.176.e-malbork.net
178.217.249.178	PTR	host-249.178.e-malbork.net
178.217.249.193	PTR	host-249.193.e-malbork.net
178.217.249.194	PTR	host-249.194.e-malbork.net
178.217.249.208	PTR	host-249.208.e-malbork.net
178.217.249.209	PTR	host-249.209.e-malbork.net
178.217.249.216	PTR	host-249.216.e-malbork.net
178.217.249.218	PTR	host-249.218.e-malbork.net
178.217.249.248	PTR	host-249.248.e-malbork.net
178.217.249.249	PTR	host-249.249.e-malbork.net
178.217.251.200	A	www.kamerki.malbork.pl
178.217.251.254	PTR	host-251.254.e-malbork.net
178.217.251.254	A	ns2.e-malbork.net
178.217.251.254	A	host-251.254.internet.malbork.pl
178.217.254.240	A+PTR	dns.pup.malbork.pl
178.217.254.240	A	poczta.pup.malbork.pl
178.217.254.245	A	poczta.krnet.pl
178.217.255.168	A+PTR	host-255.168.internet.malbork.pl