Robtex

Up: 188.137.48.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 188.137.48.0/23
Down right: 188.137.50.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
188.137.48.165	A	static-188-137-48-165.leon.com.pl
188.137.49.20	A	static-188-137-49-20.leon.com.pl
188.137.49.189	PTR	static-188-137-49-189.leon.com.pl
188.137.49.189	A	sgu.pl
188.137.49.189	A	*.sgu.pl
188.137.49.211	PTR	static-188-137-49-211.leon.com.pl
188.137.49.211	A	musiol.rybnik.pl
188.137.50.88	A	static-188-137-50-88.leon.com.pl
188.137.51.170	A+PTR	static-188-137-51-170.leon.com.pl
188.137.51.170	A	esixz.com
188.137.51.170	A	progor.com.pl
188.137.51.251	A	sebart.pl