Robtex

Up: 5.173.224.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 5.173.240.0/21
Down right: 5.173.248.0/21

IP	Type	Hostname
5.173.240.71	A	user-5-173-240-71.play-internet.pl
5.173.240.108	A	user-5-173-240-108.play-internet.pl
5.173.240.131	A+PTR	user-5-173-240-131.play-internet.pl
5.173.240.187	A	user-5-173-240-187.play-internet.pl
5.173.241.32	PTR	user-5-173-241-32.play-internet.pl
5.173.241.231	A	user-5-173-241-231.play-internet.pl
5.173.243.63	A	user-5-173-243-63.play-internet.pl
5.173.244.81	A+PTR	user-5-173-244-81.play-internet.pl
5.173.248.24	A	user-5-173-248-24.play-internet.pl
5.173.248.27	A	user-5-173-248-27.play-internet.pl
5.173.248.81	PTR	user-5-173-248-81.play-internet.pl
5.173.248.89	A	user-5-173-248-89.play-internet.pl
5.173.248.128	PTR	user-5-173-248-128.play-internet.pl
5.173.248.130	A+PTR	user-5-173-248-130.play-internet.pl
5.173.248.145	A+PTR	user-5-173-248-145.play-internet.pl
5.173.248.222	A	user-5-173-248-222.play-internet.pl
5.173.249.125	A	user-5-173-249-125.play-internet.pl
5.173.249.144	PTR	user-5-173-249-144.play-internet.pl
5.173.250.0	PTR	user-5-173-250-0.play-internet.pl
5.173.250.1	PTR	user-5-173-250-1.play-internet.pl
5.173.250.28	A	user-5-173-250-28.play-internet.pl
5.173.250.57	A	user-5-173-250-57.play-internet.pl
5.173.250.195	PTR	user-5-173-250-195.play-internet.pl
5.173.250.198	A	user-5-173-250-198.play-internet.pl
5.173.253.66	A+PTR	user-5-173-253-66.play-internet.pl
5.173.255.255	A	user-5-173-255-255.play-internet.pl